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Troubleshooting for Drying Tumblers

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1. ISEE VOLTAGE OPTION DIAGRAM I FOR LINE VOLTAGE AND AY OPL OUTPUT BOARD TOR CTIONS MOTOR CONNECTION 6 8 nen wir TRANSFC SWITCH V I S qus fa S RED BLU RED 3LU RED BLU S 1229 R3 n z mp mk Tr LNT poor ne rir w EIT 4 sep su AP2 OPL FRONT END CONTROL m 7 THERMISTOR IE voc SENSOR 1 24 i REVERSING OPTION 41 2 x 022 SENSOR 1 N RETUR i E ses nz Et SES A lt cow 1 EI Reverse T re f input s FORWARD I 6 5 neur a DAMPER F tmd 77 sic HEAT ES Smc den m less saa E FAN DRIE CONTACTOR NON REVERSNE MODELS EC swe AR FLOW LU FAN CONTACTOR ON REVERSING MODELS Bo FAN MOTOR CONTACTOR wi ar CABINET LMT 12580 STOVE 2 H6 2 BE ME sui lt gt MENTI TM kW wasser nt Doo PTONAL ALARN UNT DOOR F BYE common FAN MOTOR CENT SW nat au Al i pm srove uwir 1 ESETT eM LockouT T
2. 1SEE VOLTAGE OPTION DIAGRAM 1 FOR LINE VOLTAGE AND 55 I MOTOR CONNECTIONS n nsn 1 B comma D qus Ls h 125 E H6 3 RED BLK Mc uw DOOR Cag E E NE a i AP2 OPL FRONT END CONTROL i 7 1 Ri Lig THERMISTOR BLK SI SENSOR 1 2AVAC Le uoaa U 1 u lt 1 2 REVERSING OPTION xz ie re Buc HI Sensor 1 w zavas RETURN way s 6 8 pi au ENSA pur td exc as B pur 2 reverse 122 POLT 1 7 5 pu H3 3 83 5 H6 10 War I Roce NPUT FORWARD LI 6 5 apura DAMPER H en LE AA MPER Fs puc 53 5 be 5 8 DOOR N i 5 E FAN DRIVE CONTACTOR ON NON REVERSING MODELS F 5 are fae oad U FAN CONTACTOR ON REVERSING MODELS Boyne g LN 5 _ 10257030 H6 2 8 2 sour 6 PTIONAL ALAR E i pw 3 20 ESARET stove ur 1 EZ Lu i rm E 03 21 SEE Lockout m Mp puc Ecos E E 4 zx sd
3. REGULATING 10 9 8 7 6 4 2 1 QT RQ BDM ICIRCUIT_CON TROLS H2 CON TROL HEAT RELAY Hint el WHT WwW A2 nig arno e u e w e FAN MOTOR RELAY w 4 me A NM 3 CONTROL 4 Pn w REVERSING FORWARD MOTOR RELAY MODELS e Hie faux Re w ONLY SE MOTOR RELAY 4 w DAMPER MOTOR 5 4 EE ce BUZZER w SECONDARY ose BUZZER FUSE HEAT RELAY 9g FAN MOTOR OPTION 35A T DOOR SENSING CIRCUIT ALLOWS CENTRIFUGAL 250V RELAY ONLY WHEN DOOR IS SWTCH CLOSED amp SWTCH IS PRESSED AIR FLOW SWTCH MONITOR FOR AFS PROVING CIRCUIT H ee i ig id APR ETE zii 5 iui THERMOSTAT 1 THERMOSTAT At 1 Tit 58 SEE CONTROL ver A TEE E SWITCH FIRST COIL fr AK e reos Le 47 eH Le eH A 1 2 No HEAT 20009 DRYING TIME COOLING TIME A 2 LOW are SAY SECOND COIL SELECTOR SELECTOR Ac MED e 1 9 41 SWITCH SWITCH HIGH TEMPERATURE SELECTOR SWITCH GAS MODELS AIR FLOW meg gone SWITCH HEAT SOURCE OPTIONS e a t owo d STEAM MODELS B u 9 8 9 I STEAM t VALVE tan wr wir 9 w aik TIM
4. 1 FOR LINE VOLTAGE AND 1 OPL OUTPUT BOARD MOTOR CONNECTIONS I H6 8 sep At n TRANS 1 E E wet 6 2 sen POWER MAY qus Romu ren as aS h 125 E H6 3 RED BLK Mr uw DOOR Shree 125 5 H6 4 RED BLK 2 FRONT END CONTROL i 7 1 Ri THERMISTOR 9 1 SENSOR 1 ED BLU u p d cw 1 a REVERSING OPTION 5 anao re x BUCH seson 1 m 2avac RETURN S 26 5 ence Em BS 3 gt H BI reverse 854 PNK ce ua Pak ROS A 10 wer i input 5 rorwana 9 5 I I 6 5 put 4 DAMPER tmd P IET swe HEAT KEP ae E M sinc oor BEE E es lawa A FAN DRIVE CONTACTOR ON NON REVERSING MODELS je svoe AR Hae EE at U FAN CONTACTOR ON REVERSING MODELS BEC m as _ 1025 00 H6 2 L BE ME sou lt m uet ERES iac RESET LNT DOOR PTONAL ALARN 19 BUZZER L BY 5 3 cono LAETI 1 6 4 Uu E TEM LOCKOUT Ez puc 1 22 2 pesa ay Tagan p aa CONTROL 1 H2 1 in moe ig a
5. CABINET g LIMIT LIMIT p 1 iu THERM STAT 1 THERMOSTAT i Ill m e ee 8 SEE CONTROL wr i gE l i GAS VALVE RAN FIRST COIL roug Lex H Lae A 1 2 NO HEAT 2000 2 2 8 THI Char rest 1 1 SWITCH SWITCH 1 MED 1 NONE HIGH TEMPERATURE SELECTOR SWITCH GAS MODELS AIR FLOW SWITCH HEAT SOURCE OPTIONS nore STEAM MODELS I STEAM t VALVE bane emir eu wW TIME DISPLAY TMB2344S 70422101R1 145 Hybrid Timer Control Troubleshooting 75 Vend Satisfied No In Use LED SD and SX Control Suffixes Vend Satisfied No In Use LED Coin Models there voltage at the input side of the primary fuse there voltage at the output side of the primary fuse there voltage at the input side of the transformer there voltage at the output side of the transformer Correct wiring between the primary fuse and the terminal block Replace the primary fuse Correct wiring between the primary fuse and the transformer Replace transformer 146 Correct wiring there voltage
6. Sms aL E T oU HEAT RELAY ac 6 8K ohm 5 240Vac 13 6K ohm 10 watt lo CHASSIS GROUND DOOR SENSING CIRCUIT ALLOWS CONTROL TO TURN ON MOTOR A H2 6 Wm RELAY ONLY WHEN DOOR IS Door Sense Ret I CLOSED amp SWTCH IS PRESSED H2 2 m ii Hana ar H2 1 I 4 eg MOTOR RELAY SECONDARY rsg FUSE 3 5A T wina 2907 lin 9 30ma IN B HEAT RELAY TIME 45msec MIN AVAILABLE 1 1 e H7 3 H7 4 i 1 1 DOOR 5 WHEN 1 4 SWTOH EE S RED WHT 9 3 RED WHr Imax 5ma l COM NETMORK AND sa 7 DENER 3215465879301 EPPA PERE Hz 3 12 Jt SWITCH RED BLK RED BLK NO COM SEE VEND APPLICATION DETAIL NOTE FOR NETWORK APPLICATIONS SEE SUPLEMENTAL NETWORK DIAGRAM A2 AIR FLOW BRN RED ne WHT M No ORG BRN 15 14 ORG 9 a wr e sw wr 9 FAN MOTOR SA IMT CENTRIFUGAL SWITCH HEAT SOURCE OPTIONS GAS MODELS STEAM MODELS DOSES IGN STEAM STOVE LIMIT E AN 8 BLU THERMOSTAT 1 VALNE TH TAN VLT WHT WHT BLK WHT e TAN VLT WHT gt wat
7. TB1 Lf k e 181 1 SERVICE N TBi N CONNECTION 3 P E _GROUND PRIMARY c TERMINAL FUSE 2A T 250 7 THERMISTOR SD TIR 2 CONTROL TEMP REGULATING TL VOLTAGE CONFIGURATION INPUT TO N33 AS FOLLOWS 2 0 RELAY Tik WIRE JUMPER SUPPLY DOOR SENSING CIRCUIT ALLOWS WHT CONTROL TURN ON MOTOR 2 RELAY ONLY WHEN DOOR IS SECONDARY Poa FUSE A 35A T E LS RN RED ven 250V FAN MOTOR RELAY AIR FLOW SWITCH Fs 4 war oR0 e wrr oso e oso wir e Feci 8 DOOR HEAT RELAY SWITCH gt ar ommno e iem d 5 S RED W41 9 RED wHT r WEEK an REESE oon CABINET LIMIT CENTRIFUGAL SWITCH 4 5 1 amp H5 2 KH THERMOSTAT xL OFF WHEN is DIAGNOSTIC MACHINE RUNNING UNT Fm DRAWER m STOVE LIMIT SWITCH n THERMOSTAT 1 10 KF e RED ALK li i TAN 9 9 TAT MT wir GAS VALVE FIRST COIL amp OPE A 1 2 NO HEAT 0007 7 A 2 LOW SECOND COIL pRoP 1 TEMPERATURE SELECTOR SWITCH 1 MED START NONE HIGH SWITCH IN USE LED TEMPERATURE GAS MODELS m 3 SELECTOR SWITCH eds HEAT SOURCE OPTIONS STEA
8. e 181 1 e TBI N 3 5 GROUND TERMINAL ue gt M 1 THERMISTOR RED BLU BUS i BLK a MDC CONTROL RSS VOLTAGE CONFIGURATION INPUT TEMP REGUAMNG 1 H2 5 JUMPER H2 2 H2 5 AS FOLLOWS CONTROL CIRCUIT CONTROLS 24Vac WRE JUMPER POWER 45 HEAT RELAY SECONDARY 120Vac 6 8K ohm 5 watt SUPPLY 3 CHASSIS GROUND FUSE 24 13 6K ohm 10 watt 9 g E 1257 DOOR SENSING CIRCUIT ALLOWS 250V g CONTROL TO TURN ON MOTOR lara WHT RELAY ONLY WHEN DOOR 15 Door Sense Ret 1 CLOSED amp SWITCH IS PRESSED W i w i WHT A H2 1 H2 4 ORG 4 MOTOR RELAY 5 1 FS 2 START PULSE INPUT H3 1 amp H3 2 linz 3 30ma HEAT RELAY TIME 20msec MIN re AVAILABLE OUTPUT H3 5 amp H3 4 1 Boog SWITCH Nos faves _ 9 x FED tT 9 Re x DROPS LINT e et E DRAWER a a 128221581 288 1 SWITCH RED BLK g 49 RED BLK N O e SEE VEND APPLICATION DETAIL Al 2 BRN RED AIR FLOW SWITCH N O ORG BRN Ee COM 13 14 c M T 8 L 9 XT HEAT SOURCE OPTIONS FAN MOTOR CABINET LIMIT CENTRIFUGAL SWITCH GAS MODELS
9. IT ORG 8 ORG WH oRc CABINET LIMIT CENTRIFUGAL SWTCH HEAT SOURCE OPTIONS THERMOSTAT GAS MODELS STEAM MODELS aw I eN STEAM t i i saa TAN V T WHT wWHT B IT web d ICM GAS VALVE FIRST COIL VALV SECOND COIL 11 BLK TMB2331S 70422101R1 58 Unit Will Not Heat Electric Note Tests are conducted with unit running and calling for heat All voltage checks are referenced to transformer neutral 1 No Correct wiring between FS 2 and Is there voltage at FS 2 of control N O of lint panel switch Yes Replace Poat Pe control 2 No No Is there voltage at FS 1 of control Is the thermistor operational Yes Yes No Correct wiring between airflow Is there voltage to the common of the airflow switch switch and cabinet limit Yes 4 No Check for proper operation of airflow Switch Replace if necessary Is there voltage to the N O terminal of the airflow switch Yes 5 Correct wiring Is there voltage at No between terminal 13 terminal 13 of d and N O of airflow control relay Switch Yes 6 No Is there voltage at terminal 14 of the motor control relay Replace motor control relay Yes 70422101R1 NetMaster T
10. Refer to Is there improper or Yes Installation inadequate exhaust Manual for exhaust and or make up air and make up air requirements No Open partially Gas Modo b Yes closed gas shut off there insufficient as supply valve or correct low g i pressure No Tumbler is equipped for Gas Models Is tumbler Yes type of gas specified on not properly equipped serial plate at 0 2 000 for type of gas used feet altitude Refer to Installation Manual No Refer to Gas Models Is Yes Adjustments burner flame improperly adjusted Section for burner flame adjustment No Is high limit Yes Refer to thermostat Paraoraph 8 cycling off grap o No Is there Refer to wiring broken loose Yes diagram or incorrect wiring 26 located inside contactor box TMB1879S 70422101R1 Troubleshooting 9 Heating Element or Burner Repeatedly Cycles Off On High Limit Thermostat Heating element or burner repeatedly cycles off on high limit thermostat Is external exhaust system longer than recommended or is there inadequate make up air Is lint screen clogged Is there lint in tumbler ducts Is there lint in external exhaust system Yes Yes Refer to Installation Manual for exhaust and make up air requirements Remove screen and clean Lint screen and compartment should be cleaned
11. i W1 SERVICE N mS I Cif PRIMARY or or FUE T T T 2A T 250 a d 5 Er i L SECONDARY zm FUSE jSECONDARY MODELS RM MODELS 35A T FUSE 250v 1 25A T 8 250V 1 RED BLU THERMISTOR THERMISTOR oeoo voo b shh L6 2 12 3 8 4 5 9 1 1 7 10 chASSIS GROUND FUSE RET D CONTROL 24 SUPPLY 24VAC EXT t 24VAC EXT s n He EXT AC RET FAN La d i RELAY m v 8 A8 1 4 aou 4 e 9 nE wi1 e WHT 3 4 050 075 REVERSING Pu w MODELS 3 4 ew 9 F75 REVERSING e r e w MODELS 4 s 132 HEAT SOURCE OPTIONS STOVE LIMIT THERMOSTAT 1 GAS MODELS MHT GAS VALVE FIRST COIL Q0 SECOND COIL 000 STEAM MODELS 23385 70422101R1 69 Unit Will Not Heat Steam Unit Will Not Heat Steam Is there voltage at H2 5 of control Note Tests are conducted with unit running and calling for heat Is the thermistor operational Yes No Yes Replace Replace Yes thermistor control
12. Is there voltage to the common of the airflow switch Is there voltage to the N O terminal of the airflow switch Is there voltage at BRN wire on motor contactor there voltage on ORG WHT wire on motor contactor there voltage to terminal 3 of the motor centrifical switch No Correct wiring between airflow switch and cabinet limit Check for proper operation of airflow switch Replace if necessary Correct harness Replace motor contactor Correct wiring between motor terminal 3 and motor centrifical switch All voltage checks are referenced to transformer neutral 70422101R1 Yes Is there voltage at terminal 5 of the fan motor Is there voltage to the input of the cabinet limit Is there voltage to the output of the cabinet limit Is there 24 VAC across the coil of the steam valve Does the steam valve coil have continuity Is the steam supply functional Replace or rebuild the steam valve Check motor for proper operation Replace if necessary Correct wiring between cabinet limit and terminal 5 of fan motor Check cabinet limit for proper operation Replace if necessary Correct wiring between steam valve coil and motor
13. watu waw DETAIL DA 97 4 mu aw or 70422101R1 TMB2383S 207 LED OPL and UniLinc Troubleshooting 100 Airflow Errors UniLinc Error Display Airflow Switch Sensed Closed While Not In Run Mode Airflow Switch Does Not Close After Cycle Started Airflow Switch Bounces During A Running Cycle 208 LED OPL Error Display E AF1 E AF2 E AF NOTE Check airflow switch for proper mechanical operation ensure there is no lint or other items interfering with the proper operation NOTE The airflow switch is required to be open prior to the beginning of the cycle The switch is also required to close within the cycle Is there 24 volts AC at H6 1 to H6 9 Check Transformer and Fuse F3 NOTE If the voltage is present but lower than 24 volts AC ensure the correct transformer configuration jumper is installed Is there 24 volts AC at H2 12 to H6 9 Replace I O Board AP1 Check harness and Is there 24 volts AC at airflow switch H2 5 to H6 9 with airflow Switch closed Repair or replace as required NOTE The following checks are DC voltage checks Is there 5 volts DC at H3 7 Check control harness to H3 11 with switch open and 0 volts DC with Switch closed H3 and I O Board AP1 Replace as required CAUTION Always power down the machine PRIOR to disconnecting or connecting the H3 harness Once disconnected you can power up t
14. a a 103 58 Unit Will Not Heat Electric see 105 70422101R1 70422101R1 59 CE Models No Display sese 108 60 CE Models Door Open Indicator 110 61 CE Models No Start Run a s 112 62 CE Models Will Not Heat Gas 114 63 Models Will Not Heat Steam 117 64 CE Models Will Not Heat Electric 119 Section 8 On Premise Micro Control OM Troubleshooting 122 65 Control Has No Display a 123 66 Door Open Indicator a 125 67 Motor Will Not Start Run essen 127 68 Unit Will Not Heat Gas 130 69 Unit Will Not Heat Steam 133 70 Unit Will Not Heat Electric 135 Ts Error Codes ss a a he ho re RR 138 Section 9 Hybrid Timer Control Troubleshooting 139 72 Coins Ignored When Entered 140 73 Control Has No Display and RQ Control Suffixes 141 74 Display Flashes dr With Door Closed QT and RQ Control Suffixes
15. After creating a direct short with orange test jumper between basket and insulated baffle is there any ressistance Yes If less than 2 ohms verify correct dipswitch settings and perform diagnostic test cycle Repair or replace wiring harness After disconnecting the 2 wire slip ring harness located at rear of trunnion shaft is there resistance into the slip ring harness Yes between control and slip rings 6 After removing 3 screws from slip ring assembly is there any resistance at bullet connector to trunnion shaft Verify connections on both ends of slip ring assembly Replace as required Remove basket and repair or replace wiring harness TMB2381S 214 70422101R1 Moisture Sensor Error LED OPL and UniLinc Troubleshooting TSEE VOLTAGE OPTION DIAGRAMI DA mem 1 FOR LINE VOLTAGE AND 1 1 OPL OUTPUT BOARD I MOTOR CONNECTIONS f acon n TRANS
16. Is there 24 VAC at terminal 5 of fan motor Replace fan motor centrifugal switch Is there 24 VAC at FS 1 of MDC control Is the thermistor operational YES Correct wiring between COM of airflow switch and FS 1 of MDC control Correct wiring Is there 24 VAC to the between cabinet input side of the limit and terminal 5 cabinet limit of fan motor centrifugal switch Is there 24 VAC at COM of airflow switch Is there 24 VAC at Check for proper N C terminal function of airflow of airflow switch and replace if switch necessary Is there 24 VAC at output side of cabinet limit Replace cabinet limit Correct wiring between terminal 7 on motor control relay and N C terminal on airflow switch Is there 24 VAC at terminal 13 of motor control relay Is there 24 VAC to the Correct wiring input side of the stove between stove limit limit and cabinet limit Is there 24 VAC at terminal 14 of motor control relay Replace motor control relay TMB2307S a 70422101R1 81 Micro Display Control MDC Troubleshooting 47 Unit Will Not Heat Gas continued 12 Is there 24 VAC at output side of the stove limit NO Replace the stove Is there a flame Unit operational limit YES NO 13 Is there 24 VAC to terminal 2 of the Ignition Control Module ICM Correct wiring be
17. a 188 CE Models Will Not Heat Gas Steam 191 CE Models Will Not Heat Electric 194 Section 11 LED OPL UniLinc Troubleshooting 197 96 No Fan Motor Rotation a 198 97 No Drive Motor Rotation sess 201 98 Stove and Cabinet Limit Errors 204 99 No Display u u n n i eee cones rie ar 206 100 Airflow Errors enne 208 101 Fan Motor Centrifugal Switch Error 210 102 Close Door Indication eene 212 103 Moisture Sensor Error a 214 Troubleshooting the Moisture Sensor Circulit 216 104 Troubleshooting at the Control 216 105 Troubleshooting From Control to Slip Ring Assembly 218 106 Troubleshooting At Slip Ring Assembly 220 107 Troubleshooting From Slip Ring Assembly to Moisture Sensing Baffle and Basket 220 108 Troubleshooting from Basket Shaft to Moisture Sensing Baffle with Machine Basket Removed 220 109 Troubleshooting at the Moisture Sensing Baffles with Machine Basket Removed 221
18. 70422101R1 NetMaster Troubleshooting KT075 Models Only Is there voltage on terminal 5 of the motor Check for proper operation of motor switch Replace motor if necessary Is there voltage across the coil of the steam solenoid Correct wiring between steam solenoid and motor switch Does the steam valve open No Replace steam valve Is heat produced Check for correct Verify that steam Installation Manual steam supply was connected according to the Unit operational TMB2350S 117 NetMaster Troubleshooting KT075 Models Only CE Models Will Not Heat Steam li y y Le THR I i TE Tas F4 i H3 Hi 1 4 x e 6 0 H2 2 H2 5 l H2 1 P Zi u AFS 13 COM K2 q ubi Emm 9 9 4 ICM IGN s i 2 22 4 8 4 2 5 7 3 6 GAS MODELS ST 1 H RRS 4 STEAM MODELS qe oe T sos 1 WG a w lt 0 2 CD CRI CRI TMB2336
19. Is there voltage at output side of secondary fuse Replace secondary fuse Connect wiring between COM and output of secondary fuse Is there voltage at COM of door switch Continued on next page TMB2406S 70422101R1 Hybrid Timer Control Troubleshooting Display Flashes dr With Door Closed QT and RQ Control Suffixes 1 u e 181 SERVICE N CONNECTION GROUND TERMINAL 7 3 THERMISTOR PRIMARY FUSE fo 2A T REGULATING 10 9 8 7 6 5 4 3 2 1 CIRCUIT CONTROLS H2 250v HEAT RELAY WI 4 W 1 A2 4 neal arent e ue vn W 4 PNK Fe wr REVERSING POWER ad FORWARD MOTOR RELAY l Ps MODELS puua me ONLY REVERSE MOTOR RELAY 4 w MOTOR ad D BUZZER LW e e Li ons we e eon nm eom BUZZER HEAT RELAY nod FAN MOTOR OPTION DOOR SENSING CIRCUIT ALLOWS CONTROL TO TURN ON MOT RELAY ONLY WHEN DOOR IS CLOSED amp SWITCH IS PRESSED AR FLOW SWITCH MONITOR FOR AFS PROVING CIRCUIT CENTRIFUGAL SWITCH BLU IGN STOVE
20. 63 36 Airflow Switch 64 37 Loading Door Switch essere 64 38 Loading Door Catch a 65 39 Aligning Door Strike sese 65 40 Drive Belt Tension retener e n ere RHET 66 41 Cylinder Clearance sese eee 69 42 Cleaning Coin Drop aaa 70 Section 6 Micro Display Control MDC Troubleshooting 73 43 Coins Ignored When Entered 73 44 Control Has No Display sese 74 45 Door Open Indicator a ass 76 46 Motor Will Not Start Run eee 78 47 Unit Will Not Heat Gas 81 48 Unit Will Not Heat Steam 84 49 Unit Will Not Heat Electric 87 DOW Error COMES eet ted ete dt 90 Section 7 NetMaster Troubleshooting KT075 Models Only a 91 51 No Infrared Communication 92 52 Coins Ignored When Entered 93 53 No DISplaji eie irte ee ee ea ees 94 54 Door Open Indicator sese 96 BEBE EE 98 56 Unit Will Not Heat 100 57 Unit Will Not Heat Steam
21. the at the input transformer side of the and ihe secondary secondary mesy fuse there voltage at the output Replace side of the secondary secondary fuse fuse Is there power to the control of H1 1 and H1 3 Correct wiring between fuse and control Is there voltage at COM of the door switch Correct wiring between the secondary fuse and COM of the door switch continued on next page TMB2259S a 70422101R1 75 Vend Satisfied No In Use LED SD and SX Control Suffixes continued continued from previous page there voltage at of the door switch Hybrid Timer Control Troubleshooting Replace the door switch there voltage at COM of the lint drawer switch No Correct wiring between the door switch and lint drawer switch there voltage at N O of the lint drawer switch No Replace the lint drawer switch there power at H3 1 and H3 3 on the control Correct wiring between the lint drawer switch and H3 on the control 70422101R1 connection plugged in securely on the control Is the optic coupler harness connected securely into the control harness Replace the opto coupler on the coin drop Unit is operational No Re seat the H6
22. 050 075 a AN REVERSING MODELS 3 4 PNK 9 wm F75 4 LAN REVERSING s r e wr MODELS EE 8 0 REN i IGN AIR FLOW SWTCH eet etre ene 3 E Se NTRIFG CABINET STOVE ICM GAS VALVE THERMOSTAT THERMOSTAT 1 FIRST COIL a Q0 GAS MODELS bee E ad SECOND COIL 000 HEAT SOURCE OPTIONS STEAM MODELS STEAM VALVE T T TOK TMB2338S 124 70422101R1 On Premise Micro Control OM Troubleshooting 66 Door Open Indicator Door Open Indicator Is there 24 VAC between H2 8 and H2 9 Gas steam and electric heat Reference voltage Single and three phase power supply checks to transformer neutral 5 Replace control With door closed is there 24 VAC to N O of door switch Check for proper function of door switch replace if necessary Is there Correct wiring 24 VAC at the between input of the secondary secondary fuse and Is there Correct wiring fuse transformer 24 VAC at COM between N O on of lint panel door switch and switch COM on lint panel switch Is there 24 VAC at output Replace side of secondary secondary fuse fuse Check lint panel switch for proper operation replace if necessary 24 VAC at
23. 21 6 Heating Element Does Not Heat or Burner Does Not Ignite oo 23 7 Igniter Does Not Shut Off After Gas Ignition Gras Burner zi etre n Een ERR 25 8 Heating Element or Burner Shuts Off Prematurely 26 9 Heating Element or Burner Repeatedly Cycles Off On High Limit Thermostat essere 27 10 Heating Element or Burner Does Not Shut O1f 28 11 Clothes Do Not Dry 29 12 Tumble Dryer Overheating essere 30 13 Burners Not Burning Properly Gas Models 31 14 Loading Door Opens During Operation 32 15 Tumble Dryer Runs But No Steam To Coils Steam Models eese 33 16 Water In Steam Line Steam Models 34 17 Door Open Light and Display Flash With Door Closed 35 18 Display Shows SH and Signals Sounds 36 19 Display Shows OP and Signal Sounds Three Minutes After Tumble Dryer is Started 37 20 Motor Runs Time on Drying Timer But No Heat 38 21 No Main Burner Flame Igniter Does Not Spark 40 22 Steam OM Control No Heat With Cycle Selected Unit Running and Calling For Heat 41 23 OM and RM Control No Start With Cycl
24. FIRS COL aog 9 Rom Le Lee A 1 2 NO HEAT S x Len ns 2 LOW GND VALV SECOND COIL DRYING COOUNG TIME GEG eas SELECTOR SELECTOR SNL SWITCH SWITCH 1 MED 1 1 W SSE SELECTOR SWITCH 7 GAS MODELS AIR FLOW were gom E SWITCH HEAT SOURCE OPTIONS oRG BRN ORF STEAM MODELS STEAM t VALVE WT wir 9 MT aK TIME DISPLAY 154 TMB2344S 70422101R1 Hybrid Timer Control Troubleshooting 79 Unit Will Not Heat Gas SD and SX Control Suffixes Unit Will Not Heat Gas SD and SX Control Suffixes All voltage 1 Note Tests are conducted with unit running and calling for heat checks are referenced to transformer neutral Is there p voltage at Correct wiring between FS 2 FS 2 of i and N O deal of lint panel control p Yes Replace Replace thermistor hybrid control 2 Is there voltage at FS 1 of hybrid control No Is there voltage at COM of airflow switch there voltage at N O terminal of airflow switch i No Is the thermistor operational Correct wiring between COM of airflow switch and FS 1 of hybrid control Check for proper
25. Continued on next page TMB2340S a 130 70422101R1 68 Unit Will Not Heat Gas continued Continued from previous page Is there voltage to the output side of the stove limit Check operation of stove limit Replace if necessary Is there voltage to terminal 2 of the Ignition Control Module ICM Correct wiring between terminal 2 of ICM and stove limit Note Make sure unit is not in a lockout condition Is there voltage at terminal 1 of ICM board No Replace ICM board Is there voltage across the coils of the gas valve Correct wiring between gas valve and ICM board On Premise Micro Control OM Troubleshooting Replace high voltage ignition cable igniter or Does the igniter spark ICM board Is there a Unit flame operational Replace gas valve coils or complete gas valve Is there gas flow through the gas valve Yes TMB2340S b Please see following page for wiring diagram information 70422101R1 131 On Premise Micro Control OM Troubleshooting TB1 Unit Will Not Heat Gas
26. i Hz VALV wiry SECOND COIL DROP 1 EMPERATUR 4 1 PH SELECTOR SWITCH 1 MED START NONE HIGH ial bi LED TEMPERATURE GAS MODELS Wo SELECTOR SWITCH T HEAT SOURCE OPTIONS STEAM MODELS ls l STEAM TAN BLU VALVE D TMB2345S 70422101R1 Hybrid Timer Control Troubleshooting 78 Motor Will Not Start Run QT and RQ Control Suffixes Note test conducted with vend Gas electric and steam heat 1 price satisfied and start button Single and three phase power supply pressed Is there voltage across NO Refer to Display Flashes dr H4 7 and H4 4 on With Door Closed QT and RQ the electronic control Control Suffixes flowchart Correct wiring between fan motor and motor control relay Is there voltage across terminals 1 amp 4 of the fan motor Is there voltage across H4 3 and H4 4 on the electronic control Replace control Does the cylinder Replace cylinder motor run motor Is there voltage across the coil of Correct wiring to coil the motor control of motor relay relay Motors are operational Is the unit equipped with single phase or three phase power Single phase 4 Is there voltage at Correct wiring terminal 5 of the between terminal 5 motor control relay and power supply Is there voltage at terminal 6 of motor control relay Replace motor control relay
27. of lint panel switch with lint panel closed No Correct wiring Is there 24 atCOM S between COM Correct wiring of door switch and output of between H2 8 of secondary fuse electronic control and N O of lint panel switch TMB22528 70422101R1 125 On Premise Micro Control OM Troubleshooting Door Open Indicator TB1 _ 9 1 1 SERVICE CONNECTION x 3 GROUND PRIMARY d d rdi id TERMINAL FUSE 1 T 2A T 250 3 a 5 ue UM ne d MOTOR wr MODELS RM MODELS THERMISTOR THERMISTOR 79 9 Si 4 6 Le 212 3 8 5 9 11 1 7 10 cHassis H GROUND fae OPL MICRO I FUSE RET 125A PONT aye s 24 SUPPLY 29 24VAC EXT RET n Ed 24VAC EXT ry ny H N w z v v 13 14 1 2 1216 5 7 3 10111 RED BLK 1 3 4 e 050 075 n REVERSING Pu F MODELS 3 4 F75 a REVERSING Pec MODELS wr 4 IGN AIR FLOW D
28. Is the primary fuse Replace the good primary fuse line voltage present across the black and It blue wires on the primary side of the transformer Correct wiring between the transformer and the fuse 24 volts across terminals 2 and 3 of the transformer secondary Replace transformer 4 there 24 volts Check fuse to the input side Replace if of the secondary necessary Correct the wiring between the fuse and the common terminal of the door switch there 24 volts to the output side of the secondary fuse Is there 24 volts to the common terminal of the door switch there 24 volts at the normally open terminal of the door switch with the door closed there 24 volts to the common terminal of the lint panel switch Is there 24 volts to the contact on the lint panel switch Is there 24 volts across terminals H5 7 and H5 4 on the Check door switch for proper operation Replace if necessary Correct the wiring between the door switch and the lint panel switch Replace the lint panel switch Correct the wiring between the N O terminal on the lint panel switch to terminal H2 1 on the control Replace control 170 control Correc
29. TMB2407S Please see following page for wiring diagram information 70422101R1 153 Hybrid Timer Control Troubleshooting Motor Will Not Start Run QT and RQ Control Suffixes TB1 LI 2 TBi L SERVICE N TBI N CONNECTION P E GROUND TERMINAL d TZ a PRIMARY FUE 7 1 4 2 QT RQ k apami CONTROL TOV 2 w wu eaa w REVERSING RED WHT HII SUPPLY MODELS A Dor w ONLY i pi VERSE MOTOR RELAY jw wag wi DAMPER MOTOR 4 amice BLU P BUZZER 4 w a NB WHT eo SECONDARY cud BUZZER HEAT RELAY FAN MOTOR OPTION 3 5A T DOOR SENSING CIRCUIT ALLOWS CENTRIFUGAL 250 peoa RELAY ONLY WIEN DOOR IS SWITCH CLOSED amp SWITCH IS PRESSED AIR FLOW SWITCH MONITOR He Ne FOR AFS PROVING CIRCUIT oe q E a IGN i a nd i DOOR SWITCH errr eet 5105 1i 2194 THERMOSTAT 1 THERMOSTAT Rope 8 Tht moema Q SEB CONTROL 2 L_ GAS VALVE SAET
30. Close steam valve to steam tumbler before servicing Never start the tumbler with any guards panels removed Whenever ground wires are removed during servicing these ground wires must be reconnected to ensure that the tumbler is properly grounded 42 Cleaning Coin Drop NOTE The coin drop should be cleaned once a year Clean the drop more often if it is exposed to high levels of residue or lint build up a Disconnect electrical power to machine and drop b Remove coin drop from machine c Check the spring style of coin drop Coin Drops with Old Style Spring refer to Figure 17 1 Move spring downward until cover catch is free Refer to Figure 17 NOTE Do not lift or overbend the spring in any direction DRY2088N Figure 17 70 2 Open cover for coin drop Refer to Figure 16 Figure 18 Coin Drops with New Style Spring refer to Figure 19 DRY2404N Figure 19 70422101R1 Adjustments 3 Open cover of coin drop Refer to Figure 20 NOTE Do not overbend the spring by opening cover too far New Style Spring Coin Drop DRY2405N Figure 22 e Clean residue from coin rail with an alcohol moistened cloth Refer to Figure 23 DRY2408N Figure 20 d Clean the coin path with a soft brush and wipe exposed surfaces with an alcohol moistened cloth Ref
31. DROPS lt I DRAWER E mer i SWITCH RED BLK Q RED BLK NO COM SEE VEND APPLICATION DETAIL M RED O AIR FLOW SWITCH ABINET LIMIT THERMOSTAT STOVE LIMIT THERMOSTAT 1 FAN MOTOR CENTRIFUGAL SWITCH FOR MODLES WITH LINE VOLTAGE OF 240 OR LESS TMB2330S 89 Micro Display Control MDC Troubleshooting ans To reduce the risk of electric shock fire explosion serious injury or death Disconnect electric power to the dryer s before servicing Close gas shut off valve to gas dryer s before servicing Never start the dryer s with any guards panels removed Whenever ground wires are removed during servicing these ground wires must be reconnected to ensure that the dryer is properly grounded W001R1 50 Error Codes OP Indicates physical open in the thermistor circuit Possible causes are 1 thermistor 2 wiring between control and thermistor 3 control SH Indicates a short in the thermistor circuit Possible causes are 1 shorted thermistor 2 a short in the wiring between control and thermistor 3 control Card Reader Machines In addition to the above errors EC 19 Indicates no card reader communication The control and the reader cannot communicate Check reader control and harness NOTE For all other card reader errors consult the card reader manual provided by t
32. EET r wi eue Bst ENROL loot spe He 2 1 A EWORK Tana 2 Flt m AR FLOW 99 wmownoi2 SEE 1 E Ae 33 ec 25 INETWORK H2 5 1 1 778 25 OPTION i SY i Zea 27 G K2 M 552 rep DIAGRAM L3 2 8 oscar Lo FAN MOTOR i amp Network Ro 27 t Fond I m 55 is rz wat Pte cas SEIS ncs i S Lt valve 355 ee Presa 2 4 L we Hos yer trrizvidd i ves r1 S 5552959 4 ow 5 5 3 2 9 p 5 E i s FAN ON 12 10 En nau Motu i E f i 12 3 Toot oe E PROGRAMING Die STORES 1 Su m gner uur DE r teat a ge a BEE 88 au ssl 555 BR gas 8 GAs WHT BLK STEAM vare 1 om 888 sw ee ee MERE De uc cas near Had y pTI H 025 035 esn r E E Werl l STEAM viu 211 69 099 2 STEAM 1 170 200 25 2 Hon uN 1 1 L wara WaS omy l cR gt J l l Pn has 2 dog STEAM f 3e ist 2 2 rwn db oan 1 jn AN 3 1 io ME 1 MOISTURE 1 po 227 i 33 em 47 3 wer ze p Ta i H7 5 HEAT L J ae Tm SOURCE pr
33. Forward Motor Reverse Motor Fan Motor Damper Motor External Alarm Heater In addition the I O Board has a LED labeled 5VDC that indicates whether the I O Board is powered When lit the I O Board and front end control should both be powered If the LED does not light and both are powered verify that the loading door and lint door are closed and if checking heater related errors that the heat interlock chain is closed AirFlow Switch Fan Contactor Fan Centrifugal Switch Cabinet Limit and Stove Limit If the LED still does not light check the connection between the front end control and the I O Board If they are connected properly and voltage is present at the pin corresponding to the error with the ground pin on the same connector the I O Board must be replaced If voltage is not present the front end control must be replaced 70422101R1 197 LED OPL and UniLinc Troubleshooting 96 No Fan Motor Rotation NOTE All mechanical checks should be performed prior to starting the electrical checks Ensure the belt s basket idler and pulleys are rotating freely 1 Is there 24 volts AC at bi H6 1 to H6 9 NOTE If the voltage is present but lower than 24volts AC ensure the correct transformer configuration jumper is installed Yes No Is there 24 volts AC st H6 5 to H6 11 Yes Is there 24 volts AC at No contactor A1 to A2 haps or or Brown Red to White repai
34. STEAM MODELS 1 H s ee H5 8 CRI CRI 70422101R1 TMB2336S 111 NetMaster Troubleshooting KT075 Models Only 61 CE Models No Start Run Note Common can be neutral or live wire depending on voltage and phase Note Voltage checks referenced to transformer neutral unless otherwise stated 1 Is there line voltage Yes across terminals 1 and 4 of the motor No 2 Is there voltage on the output side of the motor relay terminals Check to common Yes No 3 Is there voltage on the input side of the motor relay terminals Check to common line No Yes 112 Check operation of motor Replace if necessary Correct wiring between motor relay and motor Correct wiring from line supply voltage to motor relay 4 Is there voltage across Yes the coil of the motor relay No 5 Is there voltage across Yes H2 4 and H2 6 of the control No 6 Is there voltage to H2 1 Yos on the control No Correct wiring to control Refer to CE Models Door Open Indicator Check for proper operation of relay Replace if necessary Correct wiring between control and motor relay Press start button If machine doesn t start replace control TMB2315S
35. THERMISTOR RED BLU Bu a NETMASTER CONTROL 6207121131 RET ES mama CI 275 2 WRE JUMPER POWER RELAY SECONDARY 120Vac 6 8K ohm 5 watt SUPPLY CHASSIS GROUND FUSE 240Vac 13 6K ohm 10 watt 125 T DOOR SENSING CIRCUIT ALLOWS 250V 8 CONTROL TO TURN ON MOTOR Hz 2 RELAY ONLY WHEN DOOR IS Door Sense Ret 3 CLOSED amp SWITCH IS PRESSED p2 2 3 8 w d 2 gt MOTOR RELAY SECONDARY FUSE 35A 2 START PULSE INPUT 250V WHT C 7 1 H7 2 lin 9 30ma B HEAT RELAY TIME 45msec MIN E AVAILABLE OUTPUT L DOOR a 2 2Bvdc ne0 ie09 Snow 5 Imax 5ma_ l paops NETWORK AND CARDREADER SCI DER 32i1 15513 A o Q o 0 Q SWTCH RED BK g 9 RED 8LK NO COM SEE VEND APPLICATION DETAIL NOTE FOR NETWORK APPLICATIONS SEE SUPLEMENTAL NETWORK DIAGRAM 104 8 Taw 7 fe BRN WHT e e IT BRN 2 BRN RED e WHT
36. _ To reduce the risk of electric shock fire explosion serious injury or death Disconnect electric power to the tumbler before servicing Close gas shut off valve to gas tumbler before servicing Close steam valve to steam tumbler before servicing Never start the tumbler with any guards panels removed Whenever ground wires are removed during servicing these ground wires must be reconnected to ensure that the tumbler is properly grounded 35 Main Gas Burner Air Inlet a Unlock and remove the access door Remove Shutters Gas Models on tear ob unit Refer to Figure 11 b Start the tumbler and check the flame pattern Correct air and gas mixture is indicated if the flame pattern is primarily blue with small A C AUTION yellow tips and bends to the left of the heater section Too little air is indicated if the flame The air inlet shutters on the burner must be is yellow lazy and smoky m adjusted so sufficient primary air is metered c To adjust the air inlet shutter loosen adjusting into the system for proper combustion and screws maximum efficiency Before adjusting the d Push or pull shutters in or out as necessary to inlet shutter be sure that all lint is removed obtain desired flame intensity from lint compartment and lint screen e After shutter is adjusted tighten locking iin screw securely f If the shutter is correctly adjusted but the flame pattern is stright up insufficient air is flow
37. 1 5 putt CONTACTOR paer EA cow 1 lar 47 5 N gt INPUT i Kag E 1 gt INPUT 4 DAMPER i 7 e art PK 58 5 WHEE T RIVE CONTACTOR ON NON REVERSING MODEL BEE bons FAN 2 7 I t pmi us Si PNK Boe wR PNK s ALARM a ICM RESET i DNP z a wa ooon w EA x COMMON FAN MOTOR CE HE 1 i Dr stove ur ER 17 s PNK COMMON ICM Lockout 52 i Es iic TON I k svoe 922 1 CONTROL wa wawan 5 Olt ono 1 aq nf 1 2 12 AR FLOW 99 een stk 1 T Sire 23 zavac 22 NETWORK 2 5 1 H2 5 I i Tig 222 OPTION i ex 5 5 22 Gi aM I s ime ng 22 AGRAM HR leer 124 riy Mene 25 mo E CONTACTOR m e eus s s I Bi zava mer pe m un L 1 1 HE H2 4 ary Low ees wr 1 588 I I ELE ii i amp gaa T 8 eee o 1230 wem FAN NoToR I MMT BRN 2 CENTRIFUGAL 1 Since H2 3 BRN WHT 1 6 i NC Do SITES STALLATION MANUAL H2 9 i Obs E CABINET LMT um TERMOSTAT w H2 2 ERE rm SPUR 1 229 Bi mT p sm 888 sm Heo
38. INDUSTRIAL TUMBLE DRYERS 25kg 35kg TROUBLESHOOTING MANUAL 70422101R1 Publication date Apr 2013 Section 1 Safety Inf E T 5 Table of ection afety Information Locating an Authorized Service Person C n t e n ts Safety Warnings and eene 7 Safety Precautions for Servicing Tumblers 7 Section 2 Introduction 8 Model Identification gas aee tete aret 8 Serial Plate rettet tee entente 11 Cu stotri r c HERREN u ys 11 Wiring etre 11 How a Tumble Dryer Works seen 12 Theory of Operation of Instant Electronic Ignition 12 Theory of Operation e iire iaei Tia ener nennen nnns 13 Temperature Sensot niin ee et Pee GR Ce v Re ERO ode eR rds 14 Section 3 Troubleshooting 16 1 Motor Does Not Start nennen 17 2 Motor Overload Protector Cycles Repeatedly 18 3 Motor Runs But Cylinder Does Not Turn 19 4 Motor Does Not Stop ue etii tee tee ede terae ete cneeds 20 5 No Heat Condition Non CE and Non Australian Models et tede
39. essen 43 75 Vend Satisfied No In Use LED SD and SX Control Suffixes 46 76 In Use LED Lit No Motor Run SD and SX Control Suffixes 49 77 Motor Will Not Start Run SD and SX Control Suffixes 151 78 Motor Will Not Start Run QT and RQ Control Suffixes 153 79 Unit Will Not Heat Gas SD and SX Control Suffixes 155 80 Unit Will Not Heat Gas QT and RQ Control Suffixes 158 81 Unit Will Not Heat Electric QT and RQ Control hn tas 61 82 Error CodeS eaa t RARE e 164 Section 10 Electronic Control Troubleshooting 165 83 No Infrared Communication sse 166 84 Coins Ignored When Entered 85 86 87 88 89 90 91 92 93 94 95 L and W Control Suffixes only167 No Display ct crt etr ee o eerte 168 Door Open Indicator esses 170 am musu am mau ua gu uma 172 Unit Will Not Heat Gas asss 175 Unit Will Not Heat Steam sss 178 Unit Will Not Heat Electric 1 180 CE Models No Display 184 CE Models Door Open Indicator 186 CE Models No Start Run
40. sw 88 La voos We m Sn vate ma mm OAS HEAT D a E p W219 ne We l yuwe dl 25 2 H2 as 1 wau Malis 11 A 5 ME ma EOP NEY STEAM 1 f i HS 1 2 VLT WHT MLT WHT d 1 HEAT li f s gt CYLINDER 1 1 5 Moers OY S 2 i rad 123 33 HTZ ven 1 ot 4 PO SE 1 H7 5 RED WHT Reoti HEAT L J mesos SOURCE p ravir neut Ede wir au DETAIL I x 70422101R1 TMB2383S 209 LED OPL and UniLinc Troubleshooting 101 Fan Motor Centrifugal Switch Error UniLinc Error Display Fan Motor Centrifugal Switch Error LED OPL Error Display E FnCs NOTE Before performing these checks the airflow switch must be pulled in the fan motor contactor must be closed and the motor must be running Is there 24 volts AC at H6 1 to H6 9 Check Transformer and Fuse F3 NOTE If the voltage is present but Yes lower than 24 volts AC ensure the correct transformer configuration jumper is installed Is there 24 volts AC at H2 10 to H6 9 Replace I O Board AP1 Check harness and Is there 24 volts AC at wire connections at H2 3 to H6 9 with fan motor running the motor Repair or replace as necessary Yes NOTE The following checks are DC
41. 2 5 2 1 9 e 1 1 E E Los be AFS FOR MODLES WITH 1 LINE VOLTAGE OF 240 OR LESS K2 14 N C N O 4 atto fct HLT a MM 2 2 2 2 2 CRI CD CRI TMB2337S 70422101R1 121 Section 8 On Premise Micro Control OM Troubleshooting Alans _ To reduce the risk of electric shock fire explosion serious injury or death Disconnect electric power to the tumbler before servicing Close gas shut off valve to gas tumbler before servicing Close steam valve to steam tumbler before servicing Never start the tumbler with any guards panels removed Whenever ground wires are removed during servicing these ground wires must be reconnected to ensure that the tumbler is properly grounded 122 70422101R1 On Premise Micro Control OM Troubleshooting 65 Control Has No Display Control Has No Display Gas steam and electric heat Single and three phase power supply Is there power supplied to the unit No Plug unit in and start cycle Is there 24 VAC across Replace terminals 1 amp transformer 4 of transformer secondary Correct wiring between primary fuse and power Is there 120 VAC at input of primary fuses supply Is there Corre
42. Cod ET soc _ i swe 2 I eS 1 B22 1 I k eus m 28 IPS 2 12 oroa d AR v 99 ro 222 SEE E 33 evi 2 9 INETWORK H2 5 1 e 1 iig COMMON 2 OPTION i A 58 oos S DIAGRAMI 885 Nm men py DIAGRAM 2 8 oso wer Lo MOTOR ED 2 wh 1 wf wen Hi y Hizi warata cas 1 Bi ae mer 22 L ie STRE eee n2 Lo mhs HEEL p 5566555 Fg i S8pSpes i 2 10 8 FAN MOTOR 1 _ Eon om HF ay B 2 3 BRN WHT i an 1 2345675 bag ERAN STES SEE NSTALLATION NL H2 9 ABINET LIMIT 1 ea ur ps THERMOSTAT oe ad uu Hen iwi 1 Sona 5 ER RES D hi ERE 33 au Soeur 1 559 ae uiris 8 Es Moons puer i oru t im BE 71 23 035 Eos r idg dr CONFIG MODELS BUTS 2 STEAM STEM i23 7 8 2 11 oe 25 L Mi ue 22 2 wa TUR wee E TAN Leala oc or lea BS Moers 1 wosrusE Sei 727 2 I I 1 23 1 gt uses H7 3 wir 2251 Ld SE 1 7 5 RED wa HEAT L J SOURCE rautt waw DETAIL I HI 4 wu aw
43. NOTE The door and lint door must be closed for voltage to be present at the fan DIAGRAMI I PORTS 1 FOR LINE VOLTAGE AND AP OPL OUTPUT BOARD agr MOTOR CONNECTIONS h l I 16 8 RED WHT 4 DOOR L TRANSFORMER i EL t wau 16 2 POWER E qus Romu ri Lys A 2 e poor AD 55 aen i 6 4 reo souk CONTRO dun sacle AP2 OPL FRONT END CONTROL Peale THERMISTOR ZTL sync sensor 1 55 CONTACTO E i R REVERSING OPTION 2 3 eno 1 4 RETURN B v P reverse i rapae 2 mas E i REVERSE cow 47 5 Es aci 19 war i 1 ter 81 BES urs FORWARD P f pw 23 4 I I eura DAMES 25 set i i EIS noor n HEE EIE FAN ORNE CONTACTOR ON NON REVERSNG Mone 5 mE i i AR nem FAN CONTACTOR ON REVERSING MODELS i oro CONTACTO FAN MOTOR
44. Non Metered Models Is timer set properly Test timer and relay and replace if inoperative Non Metered Models Are the timer or relay inoperative If motor still does not start replace motor Metered Models Are proper coins inserted in accumulator Yes Check that proper coins are inserted TMB2264S 17 Troubleshooting 2 Motor Overload Protector Cycles Repeatedly Motor overload protector cycles repeatedly Is voltage incorrect No Is clothes load too large No Is clothes cylinder binding No Is wiring inadequate No Is make up air inadequate No Has lint built up No Is there broken loose or incorrect wiring 18 Yes Yes Yes Yes gt Manual for Adjustments Refer to the Installation electrical requirements Remove part of load Check cylinder for binding Refer to Section for cylinder adjustment Yes Check with an electrician to ensure that wiring is adequate Yes Yes p Refer to Installation Manual for make up air requirements Clean lint accumulation on and around motor Refer to wiring diagram located inside contactor box TMB18748 70422101R1 3 Motor Runs But Cylinder Does Not Turn 70422101R1 Motor
45. Replace the steam valve coil Connect the steam supply On Premise Micro Control OM Troubleshooting TMB2341S 133 On Premise Micro Control OM Troubleshooting Unit Will Not Heat Steam TB1 181 0 SERVICE N I d CONNECTION 3 PRIMARY we cor show PRA FUSE I T I 2A T 250V d 5 gen ue au rf FAN MOTOR SECONDARY ki FUSE MODELS RM MODELS 35A T FUSE 250v 1 25A T m 250V THERMISTOR THERMISTOR v UUOUUUU 5 ASAP 6 2 12 3 8 4 5 9 1 1 7 10 cHASSIS GROUND Faavac FUSE RET OPL MICRO 1 25 CONTROL H4 DRY 24VAC EXT RET tt usc 5 ed lad H E FAN oe i tay TT z 3 4 1011 0 9 0 m 1 s 4 Pre auc 8 8 050 075 REVERSING O e MODELS 3 4 P 4 75 up REVERSING Pec MODELS 9 4 OO IGN AIR FLOW SWITCH Cem E E od N NTRIEIG CABINET STOVE ICM GAS
46. SD and SX Control Suffixes TB1 A B1 SERVICE N CONNECTION i a PRIMARY FUSE 2A T 250V a SECONDARY FUSE 3 5A T 250V DOOR SWITCH RED wiT 0 8 UNT DRAWER SWITCH RED BLK Q RED aLK NO COM THERMISTOR 50 CONTROL TEMP REGULATING INPI 5 AS FOLLOWS SON RELAY S SUPPLY DOOR SENSING CIRCUIT ALLOWS WHT CONTROL TO TURN ON MOTOR RELAY ONLY WHEN DOOR IS CLOSED amp SWITCH IS PRESSED WHT RED FAN MOTOR RELAY AIR FLOW SWITCH rs a S e l ORG BRN Feo HEAT RELAY ne 0RG6 9 oe FAN MOTOR TZ3459 CABINET LIMIT NTRIFUGAL SWITCH heeg T THERMOSTAT CENTRIFUGAL STE MACHINES RUNNING ae more zavee SEE INSTALLAN FOR SWITCH DETALS IGN pow STOVE LIMIT THERMOSTAT 1 2622488 vr 3 i TH GND TAN 9 9 QJ 3 w ICM GAS VALVE FIRST COIL 4000
47. The test must run for at least six seconds before it can be exited and off for six seconds before the test can be run again NOTE This test does not count towards the total machine run time operation To exit Fan Motor Test press the Back keypad The control will return to the testing mode Damper Motor Test ddAnPr This option shows the damper motor running To start test control must be in the Testing Mode Refer to How to Enter Testing Feature at the beginning of this section To enter press the Start lt gt keypad The display will show cAAPEr to indicate the damper motor is going to run The test must run for at least six seconds before it can be exited and off for six seconds before the test can be run again NOTE This test does not count towards the total machine run time operation To exit Damper Motor Test press the Back keypad The control will return to the testing mode 235 LED OPL and UniLinc Troubleshooting Reverse Motor Test dr EUSE This option shows the reverse motor running To start test control must be in the Testing Mode Refer to How to Enter Testing Feature at the beginning of this section To enter press the Start lt gt 4 keypad The display will show rnatar to indicate the reverse motor is going to run The test must run for at least six seconds before it can be exited and off for six seconds before the test can be run again NO
48. and signal sounds three minutes after tumbler is started Is If the temperature of thermistor the tumbler is above n 24 F 4 4 C replace 24 F 4 40 thermistor No Is thermistor Yes Replace or harness thermistor open TMB2267S 70422101R1 37 Troubleshooting 20 Motor Runs Time on Drying Timer But No Heat Motor runs time on drying timer but no heat Is there power out of temperature control board Is there power into temperature control board Check the ignition circuit Check thermistor and cable If OK replace temperature control board 38 Is there broken or A Repair wire loose wire at harness plug e Check for p No broken wire burner high limit from airflow thermostat Yes Continued on next page TMB2268S a 70422101R1 20 Motor Runs Time on Drying Timer But No Heat continued Continued from previous page Is there power out of burner high limit thermostat Is there power into airflow switch Is there power out Yes Replace burner high limit thermostat Check for loose or broken wire from cabinet limit of airflow switch v Adjust airflow switch 70422101R1 Is there
49. 4 1 257 HEE amp a 250v g we WHT By SECONDARY FUSE 3 5A T wf 250V lin 3 30ma 1 HEAT RELAY TIME 20msec MIN 4 P AVAILABLE E Dien SWITCH ig Vmax 28Vde __ WHT bid 5 l om n CON DROPS j 190 OHM UNT ds Sod i ds zm WM DRAWER 2 a 122223251 288 F M SWITCH RED BLK RED BLK e SEE VEND APPLICATION DETAIL HEAT SOURCE OPTIONS FAN MOTOR CABINET LIMIT CENTRIFUGAL SWITCH GAS MODELS STEAM MODELS THERMOSTAT I pu IGN STEAM IMIT 14 TAN 9 THERM STAT 1 E TI GND TAN VLT WHT Q WHT BLK WHT bosco eJ 5 WHT ICM GAS VALVE FIRST COIL GND VAL SECOND COIL 13 unc wid 7 15 TMB2329S 70422101R1 83 Micro Display Control MDC Troubleshooting 48 Unit Will Not Heat Steam Note Tests are conducted with unit running and calling for heat All voltage checks are referenced to transformer neutral 1 Correct wiring between FS 2 and COM of lint drawer Is there 24 VAC on FS 2 of MDC control Replace MDC control Replace thermistor Is there 24 VAC on FS 1 of MDC control Is the thermistor operational Correct wiring be
50. BLK WHT SERVICE 1 nd BLK RED T I q CONNECTION GRAND FUSES 2 250 X E se 24v 15 j L L SECONDARY FUSE SECONDARY OM MODELS RM MODELS 35A T FUSE 250v 1 25A T 8 250V 1 RED BLU THERMISTOR THERMISTOR us T UUUUUUUUU U v o Le 212 3 8 4 5 9 11 1 7 10 crassis m GROUND OPL MICRO FUSE RET 1 25 CONTROL d 24 6 SUPPLY 29 19 24VAC EXT RET I Eq m s q d leq EXT AC RET M H LINT v v S DOOR SWITCH SANEL 3 4 solu RED WHT RED BLK 9 U RED BLK wm 1 No 3 4 Pn aK 9 5 war 050 075 m REVERSING F 9 wer MODELS 3 4 9 war F75 ee REVERSING MODELS i IGN AIR FLOW P SWITCH T Ee ce Us Se waqa TA 8 9 CENTRIRIGAL m CABINET STove GAS VALVE THERMOSTAT THERMOSTAT 1 FIRST COIL 000 9 GAS MODELS ka er SECOND COIL 4 ex 0009 HEAT SOURCE OPTIONS STEAM MODELS gt STEA VALVE V 1 win 9 wir suc we TMB2339S 70422101R1 129 On Premise Micro Control OM Troubleshooting 68 Unit Will Not Heat Gas Note Tests are conducted with All voltage checks are referenced Unit Will Not te Tes unit run
51. Is there 24 volts AC at H6 1 to H6 9 and Fuse F3 NOTE The following checks are DC voltage checks CAUTION Always power down the machine PRIOR to disconnecting or connecting the H3 harness Once harness is disconnected you can power up the machine for troubleshooting Failure to do so may damage the front end control NOTE If the voltage is present but lower than 24 volts AC ensure the correct transformer configuration jumper is installed Yes 2 3 Is there 5 volts DC at H3 3 to H3 11 F or H3 2 to H3 11 R with contactor commanded to close and 0 volts DC with contactor not Is there 24 volts AC at H6 7 to H6 10 F or H6 6 to H6 10 R No No Check control harness H3 and front end control AP2 Replace as required NOTE The H3 harness will need to remain connected during this test Yes Yes Check control harness H3 and I O board AP1 Replace as required 4 15 there 24 VAC at contactor A1 to A2 No Replace or F Pink to White repair harness Pink Black to White Is there line voltage No on the motor side Replace contactor of the contactor Yes Yes Is contactor No energizing Replace contactor Is there line voltage No Repair or replace at the motor wiring harness Yes Yes No Check incoming Is there line voltage on the line side of both contactors power and wiring Replace or repair Rep
52. Is there 5 volts DC at H3 9 to H3 11 with cabinet limit circuit open and 0 volts DC with switch closed No Check control harness H3 Replace harness or I O Board AP1 as required NOTE You will need to manually open the circuit CAUTION Always power down the machine PRIOR to disconnecting or connecting the H3 harness Once disconnected you can power up the machine for troubleshooting Failure to do so may damage the front end control 3 Yes Is there 5 volts DC at H3 20 to H3 11 with stove limit circuit open and 0 volts DC with switch closed No Check control harness H3 Replace harness or I O Board AP1 as required NOTE You will need to manually open Yes the circuit 10 s there 5 volts DC at H3 10 to H3 11 with secondary stove limit circuit open and 0 volts DC with Switch closed No Check control harness H3 Replace harness or I O Board AP1 as required Yes Replace front end control AP2 23765 70422101R1 ISEE VOLTAGE OPTION DIAGRAM LED OPL and UniLinc Troubleshooting Stove Cabinet Limit Errors
53. onors 3 1 zm 32135152218 9077 TZ 3 z i it 1 T bids lt gt SEE VEND APPLICATION DETAIL 2 BRN RED AIR FLOW SWITCH N O 0 4 S Fee N C HEAT SOURCE OPTIONS FAN MOTOR CABINET LIMIT CENTRIFUGAL SWITCH GAS MODELS STEAM MODELS THERMOSTAT I ata Sasa IGN STEAM STOVE LIMIT t TAN 8 BLU THERMOSTAT 1 t L VALVE TH GND TAN 8 VLT WHT WHT BLK WHT 0 0 Se WHT GAS VALVE ICM FIRST COIL QD 4 GND VALV Wiz SECOND COIL TMB2329S 77 Micro Display Control MDC Troubleshooting 46 Motor Will Not Start Run Note Test conducted with vend 1 price satisfied and start button pressed Is there 24 VAC across NO Refer to H2 1 and H2 6 on Door Open the electronic control flow chart 2 Is there 24 VAC across H2 4 and H2 6 on the electronic control Replace control Is there 24 VAC across the coil of the motor control relay Correct wiring to coil of motor relay Three phase Also see Note on next page Is the unit equipped with single phase or three phase power Single phase 4 Correct wiring between terminal 5 and power supply Is there supply volt
54. 167 Electronic Control Troubleshooting 85 No Display Is there 24 volts AC across terminals H1 1 and H1 3 on control 2 Is the secondary fuse good Yes Is there 24 volts AC across the red blue and wht blue wires on the secondary side of the transformer 4 Is line voltage present across the black and It blue wires on the primary side of the transformer 5 Is the primary fuse good Yes Correct wiring from terminal block to transformer Verify that the unit is connected to power and the power is on 168 Replace the electronic control Replace the fuse Correct the wiring between the transformer secondary and the electronic control Replace the transformer Replace the primary fuse 70422101R1 SEE VOLTAG PTION DIAGRAM INE VOLTAGE No Display Electronic Control Troubleshooting R AND MOTOR CONNECTIONS TUMBLER CONTROL DOOR SWITCH 9 SR nor ew ali LINT DRAWER SWITCH RED BLK RED B K COM AIR FLOW SWITCH N O von cte ooet NC CONDARY FUSE 1 25 T 250V RED BLK REGULATING IEAT RELAY IRCUIT_CONTROLS H7 REVERSE MOTOR RELAY 5 4 CONTROL POWER 1 5 SUPPLY 4 HSS SRN RED FAN M
55. 5 aru mul i E TMB2383S 70422101R1 223 LED OPL and UniLinc Troubleshooting 111 Rotation Sensor Error UniLinc Error Display Rotation Sensor Error LED OPL Error Display E rot Adjust the gap to Is the gap from the pulley to sensor less than 1 4 inch less than 1 4 inch NOTE The following checks are DC voltage checks Replace harness and or sensor If still not present Is there a constant 12 volts of DC at H6 1 to H6 3 replace front end control AP2 While turning the basket by hand slowly is there 12 volts DC at H6 3 to H6 2 when the pulley spoke is in front of sensor and 0 volts DC as pulley spoke clears sensor No Replace harness and or sensor If still not present replace front end control AP2 Replace harness and or sensor If still not present replace front end control AP2 TMB2392S 224 70422101R1 LED OPL and UniLinc Troubleshooting Rotation Sensor Error 4 96 4 coMMoN TMB2389S 70422101R1 225 LED OPL and UniLinc Troubleshooting 112 Shorted or Open Thermistor UniLinc Error Display Shorted Thermistor Open Thermistor LED OPL Error Display ESH EoP 1 Is there approximately 50k ohms of resistance at 77 F across H7 1 and H7 2 Check each wire for possible ground fault Replace temperature sensor and or harness NOTE This resistance will vary with cabinet air temperature the higher
56. 70422101R1 Trunnion Housing Adjusting Bolts Trunnion Housing Bolts GGG Cr w Ge CCE Figure 14 Adjustments Idler Housing Assembly TMB2244N 67 Adjustments REVERSING Locking Bolt Swa aa M 2 2 c 2 Drive Belt Adjusting Nut Adjusting Screw M CNR KY RCE NN Adjusting Bolt Not Shown 2 S SE NZ SE SE SEI S NA S SZ S 4 S 3 S Idler Housing Bolts 2 Ui Idler Housing Assembly LIES hy 735 p gt TMB2283N Figure 15 68 70422101R1 Adjustments A To reduce the risk of electric shock fire explosion serious injury or death Disconnect electric power to the tumbler before servicing Close gas shut off valve to gas tumbler before servicing Close steam valve to steam tumbler before servicing Never start the tumbler with any guards panels removed Whenever ground wires are removed during servicing these ground wires must be reconnected to ensure that the tumbler is properly grounded 41 Cylinder Clearance e Turn the adjusting bolts in or out as necessary The clearance between the cylinder rim and front to obtain proper clearance between cylinder panel must be adjusted so the cylinder is centered rim and front panel within the front panel opening when the cylinder is fully loaded and is turning How
57. Electric Note Tests are conducted with unit running and calling for heat All voltage checks are referenced to transformer neutral 1 Correct wiring between H5 13 and N O of airflow switch Replace 15 there voltage at H5 13 of control Is there voltage at H5 1 of control Is the thermistor operational Is there voltage at input Correct wiring terminal of the motor between input control relay terminal and H5 1 Is there voltage at the output terminal of the fan motor relay Replace relay 5 No Check motor for Is there voltage at proper operation terminal 3 of the fan motor Replace if necessary Yes 180 6 Is there voltage at No terminal 5 of fan motor relay Yes Is there voltage to the No input of the cabinet limit Yes 8 Is there voltage to the No output of the cabinet limit Yes 9 Is there voltage to the No input of the stove limit Yes 10 Is there voltage to the No output side of the stove limit Yes Continued on next page Check motor or replace if necessary Correct wiring between cabinet limit and terminal 5 of fan motor Check cabinet limit for proper operation Replace if necessary Correct wiring between stove limit and normally open terminal of the airflow switch Check operation of stove limit Replace
58. Is there voltage across terminals 1 and 4 of the transformer Check transformer for operation Replace if necessary Is line voltage supplied to the transformer primary TMB2313S 108 70422101R1 NetMaster Troubleshooting KT075 Models Only CE Models No Display MCC Ad o MCS 5 2 9 4 ICM IGN 8 2 5 7 3 1 6 GAS MODELS ST 1 3 RRL RRS STEAM MODELS T 1 1 H s ee i H5 3 CRI CRI 70422101R1 TMB2336S 109 NetMaster Troubleshooting KT075 Models Only 60 CE Models Door Open Indicator No STEAM 110 Note All voltage checks are referenced to the transformer neutral unless otherwise stated 1 Is there voltage across Yes terminals H2 1 and H2 6 on the control No GAS 2 Is there voltage to normally closed terminal of the airflow switch Yes No 3 Is there voltage to the Yes common terminal of the airflow switch AFS No 4 Is there voltage to Yes output side of the lint door switch LDS No 5 Yes Is there volt
59. J 70422101R1 TMB2383S 213 LED OPL and UniLinc Troubleshooting 103 Moisture Sensor Error UniLinc Error Display Moisture Sensor Error LED OPL Error Display EnoiST NOTE Before troubleshooting the Moisture Sensor Error run the Moisture Sensor Tests found in Table 5 NOTE Before troubleshooting the Moisture Sensor Error run the Moisture Sensor Tests found in Table 5 NOTE All testing must be done with an empty basket Use the orange test jumper from Part No 70468901 to assist in troubleshooting NOTE Test procedures should be verified on each insulated baffle independently NOTE Loose or cut wires can cause intermittent shorts or opens If this condition is suspected a close inspection of the wiring harnesses is required Remove the basket for a proper wire harness inspection Remove basket and After removing look for short 3 screws from slip ring between basket and assembly is there any resistance each insulated baffle is there any resistance at bullet connector to Repair or replace into slip ring trunnion shaft wiring harness harness as necessary After disconnecting 2 wire slip ring harness located at rear of trunnion shaft After disconnecting the H5 connector is there any resistance into the wire harness Verify connections on both ends of slip Repair or replace wiring harness between control and slip rings ring assembly Replace as required
60. 110 Fan Motor Contactor Error a 222 111 Rotation Sensor Error esses 224 112 Shorted or Open Thermistor sse 226 113 Fuses and Transformer Configuration Jumper 228 114 Dip Switch Harness Index Mismatch 229 115 Electronic Control Testing sse 230 Diagnostic Test Descriptions 232 116 Diagnostic Testing eene 239 70422101R1 Section 1 Safety Information Throughout this manual and on machine decals you will find precautionary statements CAUTION WARNING and DANGER followed by specific instructions These precautions are intended for the personal safety of the operator user servicer and those maintaining the machine A _ Danger indicates an imminently hazardous situation that if not avoided will cause severe personal injury or death WARNING Warning indicates a hazardous situation that if not avoided could cause severe personal injury or death _ Caution indicates a hazardous situation that if not avoided may cause minor or moderate personal injury or property damage Additional precautionary statements IMPORTANT and NOTE are followed by specific instructions IMPORTANT The word IMPORTANT is used to inform the reader of specific procedures where minor machi
61. Calling For Heat 120 Volt 60 Hertz 1 Phase and 208 240 Volt 60 Hertz 1 Phase Nonreversing 460 480 Volt 60 Hertz 3 Phase and 208 240 Volt 60 Hertz 3 Phase Reversing and Nonreversing Steam OM Models No heat with cycle selected unit running and calling for heat Is there voltage at H2 13 Is there voltage at H2 6 Is there voltage at H2 5 Is there voltage to the input of the motor relay Is there voltage to the output of the motor relay No No Replace micro control Correct wiring between H2 6 and H2 13 No Check for proper thermistor operation Replace micro control if necessary Correct wiring between motor relay and micro control Replace motor relay 70422101R1 Is there voltage to the input of the motor switch Correct wiring to motor Switch Is there voltage to the output of the Replace motor motor switch Is there voltage across the steam valve coil Correct wiring to steam valve Coil Unit operational If unit still does not heat check steam supply TMB1892S Troubleshooting 23 OM and RM Control No Start With Cycle Selected Start Button Pressed and Door Closed 120 Volt 60 Hertz 1 Phase Gas and Steam Nonreversing 208 240 Volt 60 Hertz 1 or 3 Phase Steam
62. Control will enter r lt Power Disconnect Mode if temperature trip point is exceeded Power Disconnect Mode Machine is disabled and controls on front will not operate will enter Power Disconnect Mode for one second then Water On Mode Water On Mode Machine is disabled and controls on front will not operate Remain in this mode for 90 seconds then enter Lockout Mode Can enter Lockout Error Mode if both temperature sensors become open which occurs when temperature is below 40 F 4 C Will enter Idle Mode if reset button is pressed Refer to Figure 2 If temperature trip point exceeded If reset button Lockout Mode is pressed Machine is disabled and controls on front will not 70422101R1 operate Control monitors temperature readings Enters lt Water On Mode if temperature trip point is exceeded Will enter Idle Mode if reset button is pressed If both temperature sensors become open Lockout Error Mode Machine is disabled and controls on front will not P operate Water dispenses for four minutes When the reset button is pressed the control enters Idle Mode When reset button is pressed 15 Section 1 Troubleshooting To reduce the risk of electric shock fire explosion serious injury or death Disconnect electric power to the tumbler before servicing Close gas shut off valve to gas
63. DRAWER SWITCH RED BLK 8 nen aL 68 con gers ae ain ond AIR FLOW ii 5 75 SWITCH 15468 TO 171 12334 T 3l 12 if No SEE VEND 4 cd Q wT 0R6 O6 APPLICATION DETAIL NC e NOTE FOR NETWORK APPLICATIONS SEE SUPLEMENTAL NETWORK DIAGRAM 70422101R1 FAN MOTOR HEAT SOURCE OPTIONS GAS MODELS STEAM MODELS BLU BLU I i 9 BLU 9 VLT TEAM IGN VALVE CABINET LIMIT THERMOSTAT TAN 8 TAN VLT WH WHT S _ n GAS VALVE WHT BLK TMB2274S 177 Electronic Control Troubleshooting 89 Unit Will Not Heat Steam Note Tests are conducted with unit running and calling for heat All voltage checks are referenced to transformer neutral 1 Correct wiring between H5 13 and N O of airflow switch 15 there voltage at H5 13 of control Replace Replace control Is there voltage at H5 1 of control Is the thermistor operational Correct wiring between input terminal and H5 1 Is there voltage at input terminal of the motor control relay Is there voltage at the output terminal o
64. FUSE BUZZER W 3 5 5 T m 4 250V BUZZER HEAT RELAY FAN MOTOR OPTION yo eae ae 9 RED RELAY ONLY WHEN DOOR IS Hog SWITCH CLOSED amp SWITCH IS PRESSED pt AIR FLOW SWITCH MONITOR ne n FOR AFS PROVING CIRCUIT N Y DOOR B SWITCH RED WHT RED WH T STOVE CABINET NO IS LIMIT LIMIT UNT E 33337 837 5105 H3 21124 THERMOSTAT 1 THERMOSTAT E ESSEET Hi ERE Ee 18 BES 5 SEE CONTROL in Cou Ld l i OPTION FLOW g 8 5 Le ee FOR MOOLES WITH on arn T OR 1 2 3 1 2 3 ME VOLTAGE DRYING TIME COOLING TIME 3 SELECTOR SELECTOR SWTCH SWITCH TIME DISPLAY TMB2346S 70422101R1 163 Hybrid Timer Control Troubleshooting WARNING To reduce the risk of electric shock fire explosion serious injury or death Disconnect electric power to the tumbler before servicing Close gas shut off valve to gas tumbler before servicing Close steam valve to steam tumbler before servicing Never start the tumbler with any guards panels removed Whenever ground wires are removed during servicing these ground wires must be reconnected to ensure that the tumbler is properly grounded 82 Error Codes Open thermistor error Check thermistor Replace if inoperative e Check wiring be
65. NETWORK Tx Rx sa Jl 51 33 ps 3 2 12 oroen AR FLOW lt 99 aoo 23 SEE 1 E 33 2avac 25 INETWORK H2 5 ators 1 e 1 Gao cowon 127 OPTION i A 1 amp 5 ws 222 mw T 1 ESE Nmon no 7 DIAGRAM 2 amp oscar FAN MOTOR i ears 1 raw 0 2 Qi z4vac D d Lt vate SIRE 4 arw L omh E 2233 II I H Beer Wes l 3323555 T bg 2 19 wee FAN ies EAN 1 l wi Sine 13 2 3 BRN WHT T 1 2 5678 I PROGRAMMING DIP SWITCHES SEE INSTALLATION MANUAL I ste Obs J cene uum EROS VM 0 saa UH ge c EEE 88 Stove 555 WENN Dor 1 sw 888 sm ao GAS STEAM VALVE J bed rT E En E Wen p II 69 nn BUNS 1o STEAM i pog 25 2 1 i 11 t Wer m 1 L eee eel Teressa 4 en s H1 2 vryer wawa 1 g MODELS 1 MOISTURE L A 77 123 7a o gss var wat yq ze E s 1 7 5 RED war roawr HEAT p d ae Tm SOURCE Hr u rautt eu de e DETAIL I or 70422101R1 TMB2383S 205 LED OPL and UniLinc Troubleshooting 99 No Display NOTE On the UniLinc LCD eq
66. OM and RM Control No Start With Cycle Selected Start Button Pressed and Door Closed continued Continued from previous page Is there voltage across the coil of motor relay Is there Correct wiring between motor relay and micro control Correct wiring Is there output of the motor relay Does the voltage to the Replace motor relay voltage to the between motor motor Replace motor input of the relay and operate motor relay supply voltage Unit operational TMB1893S b TMB2325S a 70422101R1 43 Troubleshooting 24 OM Control No Display After Selecting One of the ON SELECT Keys 120 Volt 60 Hertz 1 Phase Gas and Steam Nonreversing 208 240 Volt 60 Hertz 1 Phase Gas and Steam Nonreversing 208 240 Volt 60 Hertz 3 Phase Gas and Steam Reversing Nonreversing 208 240 Volt 60 Hertz 3 Phase Electric Reversing Nonreversing 460 480 Volt 60 Hertz 3 Phase Gas Electric and Steam Reversing Nonreversing OM Models No display after selecting one of the on select keys Is there voltage across the primary of the transformer voltage Check Correct wiring between transformer and supply fuses Is there 24 VAC across terminals 1 Replace amp 4 of transformer transformers secondary Is there 24 VAC across terminals H3 3 and H3 4 on
67. SWITCH zt Loire ome Hoonen e SHEER TAN 8 9 14 15 EAN MOTOR 2 un SWITCH GARNET TE GAS VALVE THERMOSTAT THERMOSTAT 1 FIRST COIL Qe GAS MODELS SECOND COIL HEAT SOURCE OPTIONS STEAM MODELS STEAM VALVE TO TMB2338S 126 70422101R1 67 Motor Will Not Start Run Note Test conducted with vend On Premise Micro Control OM Troubleshooting Gas steam and electric heat Single and three phase power supply Motor Will Not Start Run Is there voltage between H2 7 and H2 9 No Is there 24 VAC across the coil of the motor control relay price satisfied and start button pressed Replace control Correct wiring to coil of motor relay Note For high voltage three phase supply 200 volts or higher the motor is supplied by L1 L2 L3 through the motor contactor terminals T1 T2 T3 Make the appropriate adjustments when doing voltage checks Is the unit equipped with single phase or three phase Single phase power 3 phase Is there supply voltage at L1 L2 L2 L3 and L1 L3 at the motor contactor Is there supply voltage across 1 2 T2 T3 and T1 T3 on the motor contactor Correct wiring between L1 L2 L3 and power sup
68. on if the alarm is active for at least one second HL OFF if the alarm is not active for one second To exit the test press the Back lt keypad The control will return to the testing mode ICM Reset Test 4 5 The ICM Reset Test can be used to both activate the ICM alarm signal and reset the ICM alarm When this test is started the ICM reset will become active If the reset signal is active for a long enough period of time 4 seconds the ICM Lockout input will become active To reset the ICM stop the ICM Reset Test and then start the test again until the ICM Lockout input becomes inactive 4 seconds and then stop the ICM Reset Test If icESEE shows on the display ICM Reset output is active 70422101R1 External Alarm Test This option tests whether the external alarm is working To start test control must be in the Testing Mode Refer to How to Enter Testing Feature at the beginning of this section To enter press the Start gt keypad The display will show Hr n and the external alarm will sound until the test is exited To exit this test press the Back keypad The control will return to the testing mode 233 LED OPL and UniLinc Troubleshooting Tumble Dryer On Temperature Test ddr Yon This option tests the temperature inside the cylinder while running a cycle To start test control must be in the Testing Mode Refer to
69. 10 minute cycle re start the tumble dryer and once again verify the unit is heating Repeat this procedure 3 times If the tumble dryer passes this test the ignition control module is operating properly and SHOULD NOT be changed Refer to Troubleshooting Manual for additional service procedures 70422101R1 21 Troubleshooting 5 No Heat Condition Refer to Is the Ignition Control Module s red light on Paragraph 7 Is there 24 volts AC between Refer to Paragraph 7 the TH and GND terminals for heat circuit on the module troubleshooting Does the igniter spark Replace igniter and high voltage lead Retest unit If unit still does not spark replace module Is there 24 volts AC at the gas valve coils when igniter is sparking Check wiring between gas valve and module Does the igniter spark but no flame is produced If wiring is good replace module Verify that gas is supplied to the machine If gas and voltage are present replace gas valve or coils Is the igniter positioned properly in the flame and does the flame look good Yes Does the flame turn off after igniter stops sparking Is there continuity between GND terminal on module and machine Replace igniter and high voltage lead Retest unit If it still does not sense flame replace module Replace module Adjust position of Verify machine is ign
70. 16 17 18 Check for proper operation of contactors replace them if necessary Is there supply voltage across T2 T2 amp T3 and T3 amp T1 Check elements for shorts or opens Check wires between contactors and elements Do all elements produce heat glow a slight orange color Please see following page for wiring diagram information Unit is operational TMB2311S b 70422101R1 PDB 16 17 18 Micro Display Control MDC Troubleshooting Unit Will Not Heat Electric 1 9 9 1 SERVICE N 9 p 9 PDB N CONNECTION P E GROUND i TERMINAL 1 1 3 E 5 u 5 HC2 HCI HC2 HC1 HC2 HC1 3 PRIMARY FUSE 2A T 250 70422101R1 4 5 24V THERMISTOR BLK 8 MDC CONTR Tem ge SECONDARY SuPPLY 5 CHASSIS FUSE x 2 g GROUND 125 T g x 250V E 8 E B BLU 5 MOTOR RELAY SECONDARY FUSE 3 5A T START PULSE INPUT 250V WHT OI H3 1 amp H3 2 8 HEAT RELAY m AVAILABLE QUTPUT M DR do MACHINE RUNNING SWITCH amp bres RED WHT RED WHT Imai cM NO
71. 250 x H1 H2 H3 a CHASSIS le 2 SEE_ TRANSFORMER CONFIGURATION DETAILS o 1 2 3 4 5 86 6 9u H H4 E 249 24V HEATIN MENTS 24 40 5 10 15 qe SEE CONTROL OPTION DIAGRAM FOR CONTROLI 13 CIRCUIT DETAILS PDB L1 PDB L2 k L 9 PDB L3 2 2 ue BLK i WHT S RED T 15 12 2 J F F F R R R eu 9 cap LS m 9 gt B BLU 9 WHT uM s e RED ns ne M a 4 a L2 a 5 TMB2279S 70422101R1 183 Electronic Control Troubleshooting 91 CE Models No Display 1 Is there voltage across H1 1 and H1 3 on the control Is there voltage coming out of fuse F4 Is fuse F4 good Is there voltage across terminals 1 and 4 of the transformer Is line voltage supplied to the transformer primary 184 Replace the control Correct wiring between fuse F4 and control Replace fuse Correct wiring between transformer and fuse Check transformer for operation Replace if necessary Is there Correct wiring line voltage on the Yes between primary output side of the fuse and primary fuse transformer No Is there line voltage on the Replace primary input side of primary fuse fuse Verify that unit
72. 5 of fan motor Is there voltage to the input of the cabinet limit Yes 10 No Check cabinet limit for proper operation Replace if necessary Is there voltage to the output of the cabinet limit Yes 11 Correct wiring No between stove limit and normally open terminal of the airflow switch Is there voltage to the input of the stove limit Yes 12 Is there voltage to the No Check operation of output side of the stove limit stove limit Replace if necessary Yes Continued on next page TMB2333S a 70422101R1 NetMaster Troubleshooting KT075 Models Only 56 Unit Will Not Heat Gas continued Is there a flame Unit operational Continued from previous page Is there voltage to Correct wiring terminal 2 of the between terminal 2 Ignition Control Module of ICM and stove ICM limit Note Make sure unit is not in a lockout a condition Is there voltage at No terminal 1 of ICM Replace ICM board board Is there voltage across Correct wiring the coils of the gas between gas valve valve and ICM board Replace gas valve coils or complete gas valve Is there gas flow through the gas valve Replace high voltage ignition cable or igniter Does the igniter spark TMB2333S b Please see following page for wiring diagram information 70422101R1 101 NetMaster Troubleshooting KT075 Models Only Unit Wi
73. 51 mm 2 inches plus or minus 6 mm 0 25 inch 2 Slowly close the loading door When door is 51 mm 2 inches from being fully closed the door switch actuating bracket located on the door should depress the button and the switch arm with an audible click 3 Ifthe actuating bracket does not operate the switch at the appropriate door closure bend the actuating switch arm in or out to achieve proper actuation TMB2105N 1 Switch Actuator Figure 12 70422101R1 Adjustments A _ To reduce the risk of electric shock fire explosion serious injury or death Disconnect electric power to the tumbler before servicing Close gas shut off valve to gas tumbler before servicing Close steam valve to steam tumbler before servicing Never start the tumbler with any guards panels removed Whenever ground wires are removed during servicing these ground wires must be reconnected to ensure that the tumbler is properly grounded 38 Loading Door Catch The door catch must be adjusted to have sufficient tension to hold loading door closed against force of load tumbling against it Proper adjustment is when 0 48 1 03 bar 7 15 pounds pull is required to open door If adjustment is required refer to Figure 13 and proceed as follows To adjust open door loosen acorn nut and turn door strike screw in or out as required Tighten acorn nut BI b T0481
74. 70422101R1 NetMaster Troubleshooting KT075 Models Only CE Models No Start Run 5 JEJEJ F mcc H1 3 9 05 haces ICM 8 8 4 2 5 7 3 T 6 GAS MODELS IGN 5 1 9 9 STEAM_MODELS 1 1 a t t H CD CRI CRI TMB2336S 70422101R1 113 NetMaster Troubleshooting KT075 Models Only 62 CE Models Will Not Heat Gas 114 Note Test conducted with unit running and calling for heat unless otherwise stated 1 No Is there voltage on FS 2 on the control Yes 2 Is there voltage at FS 1 bi of the control Yes 3 Is there voltage at No terminal 3 of the motor Yes 4 Is there voltage at No terminal 5 of the motor Yes 5 Is there voltage to the No input side of the cabinet limit Yes 6 Is there voltage to the No output side of the cabinet limit CT Yes Note Voltage checks referenced to neutral Check airflow switch AFS for proper operation If needed correct wiring between AFS and FS 2 Verify if there is volta
75. 8 Temp Temperature RPM Rotations per Minute Moisture Moisture Level Outputs DM Damper Motor FM Fan Motor FW Forward Contactor RV Reverse Contactor HT Heater EA External Alarm IR Ignition Reset Table 6 70422101R1 Alarms Menus ALARM COUNTS C01 S02 Cabinet High Limit C02 S05 Heat C38 S01 Fan Motor Contactor C07 S04 Open Thermistor C01 Scd Open Thermistor Alarms 1 of 3 12 05 03 34 11 29 15 55 08 14 07 27 06 28 18 24 04 08 08 05 TMB1400R Figure 26 ALARM COUNTS Air Flow Switch 1 Air Flow Switch 2 Air Flow Switch Bounce Cabinet High Limit Stove 1 High Limit Stove 2 High Limit Open Thermistor Short Thermistor Alarms 2 of 3 O N O O O o TMB1330R Figure 27 LED OPL and UniLinc Troubleshooting The Alarms Menu contains three screens of information On the first screen Alarms 1 of 3 the eight most recent alarms will contain Cycle Number Segment Number Alarm Type and the Date Time of the Alarm The second screen Alarms 2 of 3 alarm counts list 1 through 8 Alarm counts consist of how many times a specific alarm has occurred The third screen Alarms 3 of 3 is a continuation of the alarm counts 9 through 16 Press the or keypad to navigate to the different screens in the Alarms Menu Press the keypad to go from screen 1 to screen 3 The actual menus are informational o
76. AC at Replace H6 8 to H6 9 Board AP1 Yes No Check harness and Is there 24 volts AC at loading door switch H6 2 to H6 9 Repair or replace as required Yes 4 Is there 24 volts AC at No Replace H6 3 to H6 9 with loading Board AP1 door and lint doors closed Yes N Check harness and lo Is there 24 volts AC at H6 4 to H6 9 with both doors closed lint door switch Repair or replace as required Yes 212 NOTE The following checks are DC Voltage checks 6 Is there 5 volts DC at H3 6 to H3 11 closest to the front end control with loading door open and 0 volts DC with loading door No Check harness Replace harness or I O Board 1 as required Yes CAUTION Always power down the machine PRIOR to disconnecting or connecting the H3 harness Once disconnected you can power up the machine for troubleshooting Failure to do so may damage the front end control 7 Is there 5 volts DC at H3 18 to H3 11 with either loading or lint door open and 0 volts DC with both doors closed No Check harness and Board AP1 Repair or replace as required Yes Replace front end control AP2 TMB2380S 70422101R1 Close Door Indication LED OPL and UniLinc Troubleshooting
77. CONTACTOR Mi n L CABINET LIMIT 25 puc en STOVE t E er 0 23 ew etra voc MAS 14 DETSE pw S15 IE ALARM an mi icu reser 0 E LNT Wet E 2 OPTIONAL ALARM ET BUZZER COMMON FAN MOTOR CENT SW 1 Es puc Eizo stove 1 255 7 COMMON ICM Lockour 52 i Mp pic I 2 ATON I Nn E NW Hf Ex NETWORK Tx 222 Caan ae 5 2 1 oroya AR now 99 toig SEE I zavac 2 9 NETWORKI AEE 22 ii I H2 5 watyors 225 OPTION i I 5 5 222 DIAGRAMI aM I T 552 WR py DIAGRAM 2 8 orom FAN i i s D amb i NTACTOR L 0 2 wire P D zavac PP r om w Lt L HET H2 4 ary L whs 1 88 i 55525008 4 ass sw Spes Y o FAN MOTOR I was _ 5 CENTRIFUGAL I sinter 22 3 ses Air 1 123350785 DOPAMINE 5 XC HE 92 3 cr SWT DEALS CABINET LMT um TERMOSTAT uu H2 2 wt EEE 88 Sow Ww 1 955 Hee Weser sw H2 1 MODE law Gas MODELS I i T E a i p GAS HEAT D ms 22 7 ac p Foe we n Aisne im SECHS 16 Ra i I STEAM VALVE 211 123 7a i i 2 ony ar ame
78. Control Suffixes This feature allows the owner to run diagnostic tests 3 Press the Start lt keypad Display will on various tumble dryer operations without servicing change to d 5aF E indicating the control the tumble dryer The tests that are available are shown software version number test in Table 1 4 Press the Up 19 or the Down y keypad to For an overview of the manual diagnostic test feature scroll through the diagnostic test options refer to the flowchart on the following page How to Start Tests How to Enter Testing Feature To start a diagnostic test refer to the quick reference 1 Enter Manual Mode Refer to Entering the chart below Table Press the Start 45 7 keypad Manual Mode when the desired test is displayed For detailed information on each test read the appropriate description 2 Press the Up 19 or the Down y keypad until d appears How to Exit Testing Feature Press the Back lt keypad The display will return to Idle Mode Diagnostic Testing Mode Quick Reference Chart Display Diagnostic Mode gS5aFE Control Software Version ddoor Loading Door Status dL ink Lint Door Status dHEAE Heater Interlock Test Fan Motor Contactor Status HH represents input status open UP or closed CL FalSHH Fan Motor Centrifugal Switch Status HH represents input st
79. FUSE RET o CONTROL conmo SUPPLY 2 24VAC EXT 1 24VAC EXT la 8 8 EXT AC RET M i LINT v v Hz DOOR switch PANEL i 4 RED WHT G RED BLK 9 RED BLK MT T 3 4 a 4 Paw faux wem 050 075 REVERSING P wit MODELS 3 4 a 4 P wem 3 75 REVERSING 2 MODELS 128 AIR FLOW SWITCH RG fark 9 7 eam iT 80 0 0 0 te Gs 5 2 FAN MOTOR CENTRIFIGAL SWITCH CABINET LIMIT THERMOSTAT HEAT SOURCE mT TOE GAS VALVE THERMOSTAT 1 FIRST COIL XX GAS MODELS EE lw SECOND COLL 4 q 000 9 PTIONS I STEAM MODELS STEAM VALVE stu e su e TaN TAN T wiT wT BLK TMB2338S 70422101R1 On Premise Micro Control OM Troubleshooting Motor Will Not Start Run 3 Phase 1 LI t BLK
80. H2 1 soe 925 a s n m gg wow MR ES i E oem T i 9 4 m unos 99 222 SEE 1 E FE 2avac NETWORK 3853 aei zo did 1 Gao cowon 127 OPTION i A 1 NT8DPRSNT LS DIAGRAMI TEE OAM K2 M Wes 1 NETWORK RxD p rar go VW NS uS CONTACTOR 2 i zavac mer 2 Lt beman I Bose Lo whs wer 2233 II I Mes ru ES i SSeSeee T bg 2 2 10 wran 1 FAN i h s mran EAN Monon 1 l wi y 2 3 BRN WHT T 1 2 3456785 E ZEOGRAWMNG DP SEE INSTALLATION MANUAL H2 9 er pod 1 Obs i CABINET LMT i v eost 3 UH H2 2 wt gg MESES c ERE a8 2 955 ae 888 ao 25 ons Moots Sn vate Senant 2 7 OVE Z3 ba wat i 025 935 GAS HEAT Stove H E D 5 F STEAM THERMOSTAT 2 STEAM vice 211 02 170 200 123 I Wonks Moots 1 11 t Wer aA AS e ran AIF ET n i i ET pedes wa 2 very wwf EM i Elio Ls enr 2 ZB 23 7a 33 Hz wr ot Lud SE 1 i 17 5 nep war roawr HEAT p d a SOURCE Hr u rautt eTA wawy DETAIL i i
81. HEAT RELAY SECONDARY 120Vac 6 8K ohm 5 watt SUPPLY CHASSIS GROUND FUSE x 240Vac 13 6K ohm 10 watt lo 1 25 T g DOOR SENSING CIRCUIT ALLOWS BB 250V CONTROL TO TURN ON MOTOR S H2 6 WHT RELAY ONLY WHEN DOOR IS Door Sense Ret CLOSED amp SWITCH IS PRESSED 2 2 A W 3 t w S WHT 3 4 4 MOTOR RELAY SECONDARY FUSE 3 54 T rs 2 START PULSE INPUT 250V 7 1 amp H7 2 lin _9 30ma HEAT RELAY TIME 45msec MIN a AVAILABLE OUTPUT 1 7 3 amp H7 4 T DOOR i5 MACHINE RUNNING ak Vmax 2BVdc Air apan man ema 1 CON DROPS 1 NETWORK AND CARDREADER SCI LINT Ni DRAWER E 4 RED BLK W A RED BLK L NO COM SEE VEND APPLICATION DETAIL NOTE FOR NETWORK APPLICATIONS SEE SUPLEMENTAL NETWORK DIAGRAM AIR FLOW SWITCH 6 M ORG BRN Ho o ws 114 NC ind 8RN WHT ena CABINET dd CENTRIFUGAL SWITCH HEAT SOURCE OPTIONS GAS MODELS STEAM MODELS nns IGN STOVE LIMIT STEAM dwe Hu THERMOSTAT 1 GND VLT WHT WHT BLK Tw e e mew war ICM GAS VALVE FIRST COIL VALV SECOND COIL 14 WHT BLK TMB2331S 70422101R1
82. ISEE VOLTAGE OPTION DIAGRAMI EI mes 1 FOR LINE VOLTAGE AND OPL OUTPUT BOARD MOTOR CONNECTIONS 6 8 poon TRANSFO 1 E E 6 2 POWER Ed reoyau LS i lt no z a Te LNT Door Es Shree tke 6 4 geo souk ii AP2 OPL FRONT END CONTROL 7 1 Ri THERMISTOR IEE sype SENSOR 1 p 5 24 N REVERSING OPTION Lj eno yi BUCH seson i 2avac RETURN TOO yg psi 5 5 mama uc ray E ge i H CONTACTOR mig z puc RS cow i wpur 2 REVERSE z 3 X i Roce NPUT FORWARD 24 lt 555 pur a DAMPER ES E C NPT Eres P HE sinc wear E sync DOOR N Bue 55 discs B FAN DRIVE CONTACTOR ON NON REVERSING MODELS puc P7 5 pan jae je AR U FAN CONTACTOR ON REVERSING MODELS Bo Cr conracron et TAN m sar CANET LIMIT _ 1025 030 STOVE uM 2 Er 2avDC PE reed 6 2 We ES Hs 15 gt SIGNAL E Tk H6 1 Ew RAH 8 1 ICM RESET 95 17 _ ie E K l 84 883 FAN MOTOR CENT SW Pet i puc 220 Hat a A i lacs stove ur i i 95 5 ICM Lockout Pa BS m i de puc Hi 22 paces eeu L 4 a CONTROL 1
83. Is proper electrical power supplied to coin drop Is machine level Is coin drop clean Is sensor operative Incorrect electrical connection may prevent coins from registering in coin drop Refer to wiring diagram No Machines that are not level may prevent coins from following through required check stages of drop Refer to Installation Manual for instructions on leveling machine No Residue or lint build up may prevent coins from following through required check stages of drop Clean coin drop Replace coin drop sensor TMB1915S Troubleshooting 29 Coin Does NotFall into Coin Vault or Coin Drop Sensor Does Not Register IMPORTANT Never use oil to correct coin drop problem Oil residue will prevent coins from rolling properly IMPORTANT Do not bend or damage mechanical parts within coin drop 70422101R1 53 Troubleshooting Troubleshooting Coin Drop If coin drop is not accepting coins perform the following 1 Clean coin drop Refer to Paragraph 23 2 On electronic coin drops with an old style tension spring shown in Figure 1 and Figure 3 test and replace tension spring using the following instructions Remove Coin Drop From Machine 1 Disconnect electrical power to machine and drop 2 Remove coin drop from machine Test Tension Spring 1 Push coin return button to open and close coin drop cover to c
84. Nonreversing 208 240 Volt 60 Hertz 3 Phase Electric Nonreversing 460 480 Volt 60 Hertz 3 Phase Gas Electric and Steam Nonreversing OM and RM Models No start with cycle selected start button pressed and door closed Is there voltage to the primary of the transformer Correct wiring to transformer primary Check fuses Is there 24 VAC across terminals 2 amp 3 of transformer secondary Replace transformer Is there voltage to the COM terminal of the door switch Correct wiring between door switch and transformer Check fuse Is there Check door voltage to the switch for N O terminal proper of the door operation switch Replace if necessary 42 Is there voltage to the COM terminal of the lint panel switch Is there voltage to the N O terminal of the lint panel switch Is there voltage to terminal H2 8 on the micro control Is there voltage at terminal H2 7 on the micro control Correct wiring between lint panel switch and loading door switch Check lint panel switch for proper operation Replace if necessary Correct wiring between micro control and lint panel switch Replace micro control Continued on next page TMB1893S a 70422101R1 Troubleshooting 23
85. P IET sync MEAT Ds puc M skip ovn 5058 5 Fl FAN DRNE CONTACTOR ON NON REVERSING MODELS FE soc U FAN CONTACTOR ON REVERSING MODELS BP swe FAN MOTOR CONTACTOR FAN x cher uum 10259930 STOVE 2 E Wis 24vDC PE mer 6 2 we 43 15 BENE Siona E DOR i koc BBS iac RESET expo i puc HS PTIONAL ALARN LNT DOOR e IET BUZZER Ap BY SS coon FAN MOTOR CENT SW 3 19 PNK 1 20 lacs d SS ICM LOCKOUT pu I ob puc 1 22 DUM m a I xir S i 7 a C 5090 RIS 6 gt cou NETWORK DRE T 1 a Ft wo Ug ww no FF SEE 32 5275 NETWORK n 2avac oS NETWORK 2 5 90 common 222 OPTION 58 we DIAGI i I aay DIAGRAM 3 2 amp oscar FAN MOTOR i NETWORK 1 CONTACTOR 2 Bra cas 1 BE zavac rer Se i oH Li Vcl eee n2 L am ees m 238 II 1 Bees wes l ES MN Spes X 2 10 j FAN MOTOR 1 5 veram 3 EON Since 1 af 22 3 onar bg f SETS rg GRAIN Die SEE INSTALLATION MANUAL H2 9 wt er pod 1 Obs CABNET v NERVOS VAT 0 m UH I ge c 88 Hone au soe 655 8 8
86. PULSE INPUT 250V 3 1 amp 2 lin 3 30ma 1 HEAT RELAY TIME 20msec MIN 8 8 were T MTG MACHINE RUNNING SMICH amp Vmax 28Vdc L E wi T RED WHT Imox 5ma COM COIN DROPS LINT 15 CT DRAWER aaaaaaaaanuun 222428 1 2 amp SWITCH RED BLK 4 RED aLK NO SEE VEND APPLICATION DETAIL BRN RED WHE AIR FLOW SWITCH ORG BRN 8 Fem N C k HEAT SOURCE OPTIONS FAN MOTOR CABINET LIMIT CENTRIFUGAL SWITCH GAS MODELS STEAM MODELS THERMOSTAT a d BLU x IGN STEAM STOVE LIMIT TAN BLU THERMOSTAT 1 VALVE 7 TH GND TAN 8 VLT WHT WHT BLK WHT eee 3 o e war ICM GAS VALVE FIRST COIL VALV SECOND COIL GRN YEL 4 19 7 23295 80 70422101R1 Micro Display Control MDC Troubleshooting 47 Unit Will Not Heat Gas Note Tests are conducted with unit running and calling for heat All voltage checks are referenced to transformer neutral 1 Correct wiring Is there 24 VAC at between terminal 3 terminal 3 of fan of fan motor gt motor centrifugal centrifugal switch switch and terminal 4 of motor control relay Correct wiring between FS 2 and COM of lint drawer Replace MDC control Is there 24 VAC at FS 2 of MDC control Replace thermistor
87. VALVE THERMOSTAT THERMOSTAT 1 FIRST COIL 40009 GAS MODELS kas P SECOND COIL 4 HEAT SOURCE OPTIONS I STEAM MODELS STEAM 3 VALVE 8 0 9 8 8 TAN 6 1AN 9 gt lt TMB2338S 134 70422101R1 70 Unit Will Not Heat Electric Unit Will Not Heat Electric Is there voltage at H2 5 of control Note Tests are conducted with unit running and calling for heat Is the thermistor operational Yes No Yes Replace Replace thermistor control Is there voltage to the common of the airflow switch Is there voltage to the N O terminal of the airflow switch Is there voltage at BRN wire on motor contactor there voltage on ORG WHT wire on motor contactor Correct wiring between airflow switch and cabinet limit Check for proper operation of airflow switch Replace if necessary Correct harness No Replace motor contactor On Premise Micro Control OM Troubleshooting there voltage to centrifical switch Is there voltage at terminal 5 of the fan motor Is there voltage to the input of the cabinet limit Is there voltage to the output of the cabinet limit Is there voltage to the input of the stove limi
88. after every eight hour shift Clean tumbler ducts Disassemble exhaust system and clean 70422101R1 Is high limit thermostat cycling at too low a temperature Is lint door panel not closed properly Is backdraft damper not operating Yes Yes Replace thermostat Open lint door panel place lint door panel back on tumbler ensuring a tight fit Check for foreign objects lint accumulation or other possible obstructions TMB1880S Troubleshooting 10 Heating Element or Burner Does Not Shut Off Heating element or burner does not shut off Gas Models Are there impurities on gas valve seat preventing valve from closing No Is drying timer relay or contactor inoperative No Is wiring incorrect 28 Yes Yes Replace gas valve Yes Replace timer relay or contactor Refer to wiring diagram located inside contactor box TMB1881S 70422101R1 11 Clothes Do Not Dry Clothes do not dry Is heat source inoperative Is there too much water in articles being dried Is clothes load too large Is exhaust system improper or inadequate Yes Refer to Paragraph 5 Remove excess water Yes Refer to Installation Manual for exhaust requiremen
89. and elements TMB2342S b Please see following page for wiring diagram information 136 70422101R1 PDB L1 SERVICE CONNECTION GROUND TERMINAL B IN GRN7YEL On Premise Micro Control OM Troubleshooting Unit Will Not Heat Electric a PRIMARY 7 FUSE 2A T 250V 1 42 1 11 piip PDB L1 TBI N 5 9 PDB N LT BLU R t ED 2 Le l a z aco T i T2 R DRIVE MOTOR e 70422101R1 3 L3 n F LT BLU SECONDARY FUSE SECONDARY MODELS RM MODELS 35A T FUSE 250v 1 25A T g 250v 1 RED BLU THERMISTOR THERMISTOR UUUUUUUUU U UUOGCUU 8 2 12 3 8 4 5 9 11 1 7 10 cHASSIS 8 2 12 3 8 4 5 9 1 71 Ht GROUND OPL MICRO 1 1 25A CONTROL m 2 x 24VAC EXT RET 24VAC EXT 3 1 4 EXT RET E 90 a RELAY H2 LINT y v v 8 Boor PANEL 13 14 7 3 4 swTCH RED WHT RED BLK E RED BLK RED BLK CM max 9 R 9 wr REVERSING NOR MODELS Pu r e
90. as von 2 E E L 12 a 2 peseceq dod i STEAM cos je H7 2 wr i 39 05 HEAT 5 10 cvunneR n Monts vosme 7z l 1 ll Taa 7a dm 47 3 wit Pot E SEE I 7 5 eenz HEAT L J 1 SOURCE neuf watu DETAIL i i 4 au i ed TMB2383S 70422101R1 199 LED OPL and UniLinc Troubleshooting No Fan Motor Rotation Drawing 2 of 2 NOTE The door and lint door must be closed for voltage to be present at the fan 1 N mm 9 2 BLK WHT SERVICE BLK RED 4 s CONNECTION a PRIMARY 85 GROUND FUSES TERMINAL FNQ 1 2 500v CO L CIRCUIT DETAILS 9 F F F R R R 200 T 12 WHT H RED H REVERSING OPTION MODELS ONL Y RE RM R3 RD RQ RU TMB2387S 70422101R1 LED OPL and UniLinc Troubleshooting 97 No Drive Motor Rotation NOTE This is for machines with the reversing option only Each step has a F Forward or R Reverse representing the direction of rotation Ensure the cycle is programmed for either reversing or non reversing NOTE All mechanical checks should be performed prior to starting the electrical checks Ensure the belt s basket idler and pulleys are rotating freely 1 No Check Transformer
91. closed L int OP or Lint Door Test The control will display the status of the lint door L inEUP if door is open or L inECL if door is closed Loading door must be closed All LEDs and Show Entire Display Mode The audio signal is turned off Control will stay in this mode until any display segments key is pressed will light D HH Machine Configuration 2 HH is the configuration byte value The control will remain in this mode Display until any key is pressed HHH DIP Switch Configuration The control will show the sum of all switches in the position The control will remain in this mode until any key is pressed Degrees in Thermistor Temperature The temperature will be displayed in either Fahrenheit or Celsius 5 F 3 C Test depending on machine s configuration refer to Programming Control increments If control senses a shorted thermistor SH will be displayed If control 5H 7 senses an open thermistor OP will be displayed ec 52 Moisture Sensor Test Refer to Diagnostic Test Descriptions Test step lasts for 15 seconds Shorted _ Moisture Sensor 2 Test Refer to Diagnostic Test Descriptions Test step lasts for 15 seconds Resistance 55 10 Minute Test Cycle Determines if tumble dryer can function in a cycle for 10 minutes Start pad will flash one second on and one second off The Start pad can be used to decrease time remaining If Start pad is not pressed w
92. connection to the control Re seat the optic coupler harness to the control Replace the control TMB2259S b Hybrid Timer Control Troubleshooting P E GROUND TERMINAL Vend Satisfied No In Use LED SD and SX Control Suffixes 4 781 11 TBI N PRIMARY 3 FUSE i 5 ue 148 ps M n x THERMISTOR SD m 7 CONTROL 4 onm VOLTAGE CONFIGURATION INPUT CONTROL CRGO CONTROLS l JUMPER H3 1 TO H3 5 AS FOLLOWS POWER T RELAY 24Vac WRE JUMPER SUPPLY nze Etc pa RELAY ONLY WHEN DOOR IS er a AE Boal BRN RED We wir AIR FLOW SWITCH M FS 1 9 9 5 ORG BRN WHT ORG B ORG WHT IRN 9 alee 131 FAN MOTOR CABINET LIMIT n CABINET LIMIT CENTRIFUGAL SWITCH IGN STOVE LIMIT THERMOSTAT 1 TH GND TAN V T wrTT me 3 wir ICM GAS VALVE aire me n 1 12 a can pre ine vay SECOND COIL 1 TEMPERATURE 4 1 lt 00 SELECTOR SWITCH 1
93. drop Refer to Figure 7 MIX8B Figure 7 12 Use a small flathead screwdriver to push spring under center tab Refer to Figure 8 Small Flat Screwdriver Left Tab MIX5B Figure 8 70422101R1 Troubleshooting 13 Lift spring gently to place in position under left tab 14 Push spring to right until it snaps into position Refer to Figure 4 15 Close coin drop cover 16 Move tension spring over cover catch Refer to Figure 3 Reinstall Coin Drop Into Machine 1 Reinstall coin drop into machine 2 Reconnect electrical power to machine and drop 3 Adda coin to drop to verify that coin drop is operating properly and that electrical connection is working properly 55 Troubleshooting 30 Cylinder Is Stained Over time the cylinder and cylinder backs of tumble dryers can become stained from various melted fabrics These discolored areas can be removed by scrubbing the inside of the cylinder with cleaner and a cleaning pad such as Scotch Brite IMPORTANT Do not use a steel wool pad to clean the cylinder Steel wool can damage your machine Galvanized Cylinders For galvanized cylinders use an all purpose cleaner such as 409 and a cleaning pad such as Scotch Brite to clean the inside of the cylinder 1 Spray the cleaner on the discolored areas and let soak for a few minutes 2 Using the pad scrub the areas until the discoloration is re
94. etween gas valve valve and ICM board YES Is there gas flow NO Replace gas valve through the gas valve coils or complete gas valve YES NO Replace high Does the igniter spark voltage ignition cable or igniter YES YES Is there a flame Unit operational NO TMB2317S b Please see following page for wiring diagram information 70422101R1 159 Hybrid Timer Control Troubleshooting Unit Will Not Heat Gas QT and RQ Control Suffixes TB1 amp J hd 781 1 SERVICE N 4 TBI N CONNECTION GROUND TERMINAL 3 d 5 ue 3 THERMISTOR PRIMARY z FUSE AT QT RQ 2 i 250 CONTROL HEAT RELAY a W LU O VES FAN MOTOR ix w 7 m SN REVERSING fen wm SUPPLY FORWARD MOTOR RELAY MODELS 2 4 ONLY REVERSE MOTOR RELAY 4 wW DAMPER MOTOR M 4 iE ae 1 IN Q wWHT BRNI QR FUSE HEAT RELAY 35A T DOOR SENSING CIRCUIT ALLOWS CENTRIFUGAL 250V eeu RELAY ONLY WHEN DOOR IS swig CLOSED SWITCH IS PRESSED AIR FLOW SMTCH MONITOR FOR AFS PROVING CIRCUIT rN m ose DOOR HS SWITCH Iii 1 287 i THERMOSTAT Forma goes Ud FE SEE_CONTROL OPTION DRAWER 8 H 5 GAS VALVE SW
95. function of airflow switch and replace if necessary 70422101R1 Is there voltage at terminal 13 of motor control relay Correct wiring between terminal 7 on motor control relay and N O terminal on airflow switch there voltage at terminal 14 of motor control relay Replace motor control relay Is there voltage at terminal 3 of fan motor centrifugal switch Correct wiring between terminal 3 centrifugal switch and terminal 4 of motor control relay of fan motor there voltage at terminal 5 of fan motor centrifugal switch Replace fan motor Is there voltage to the input side of the cabinet limit Correct wiring between cabinet limit and terminal 5 of fan motor centrifugal switch continued on next page TMB2316S a 155 Hybrid Timer Control Troubleshooting 79 Unit Will Not Heat Gas SD and SX Control Suffixes continued continued from previous page Is there voltage at output of cabinet limit Is there voltage to the input side of the stove limit 1 Is there voltage to the output of stove limit 1 Is there voltage to terminal 2 of the Ignition Control Module ICM Replace cabinet limit Correct wiring between stove limit 1 and cabinet limit Replac
96. is not in a lockout condition Is there voltage at terminal 1 of ICM Replace ICM board board Is there voltage across Correct wiring the coils of the gas between gas valve valve and ICM board Replace gas valve coils or complete gas valve Is there gas flow through the gas valve Replace high voltage ignition cable or igniter Does the igniter spark TMB22758 b Please see following page for wiring diagram information 176 70422101R1 SEE VOLTAGE PTION DIAGRAM LIN ND ONN R VOLTAG OTOR ECTIONS Electronic Control Troubleshooting Unit Will Not Heat Gas THERMISTOR BLK um REGULATING J IRCUIT CONTROLS H7 RELAY TUMBLER COMTROL 00 3 CONTROL BER Reou SUPPLY 4 W p FORWARD MOTOR RELAY H5 2Q TRANSFORMER a SECONDARY REVERSE MOTOR RELAY FUSE 5 14 3 1 25 T HEAT RELAY ey Ree RED BLK RELAY ONLY WHEN DOOR IS 4 RED BLU CLOSED amp SWITCH IS PRESSED 5 12 p AIR FLOW SWITCH MONITOR HS 11g SECONDARY FOR AFS PROVING CIRCUIT FUSE START PULSE INPUT AV lin 3 30mo AVAILABLE OUTPUT THE 20 MIN g OEF WHEN DOOR 5 MACHINE RUNNING SWITCH Vmax 28Vde 9 GR RED WHT amp 5 WHT LINT
97. keypad test requires the user to press each keypad Step 02 Door Status shows whether the loading and lint doors are open or closed Press any key to advance Step 03 Screen Test shows four screens that test the LCD screen Press any key to advance through each of the four test steps The Test Cycle Menu for Test Steps 4 13 is shown in Figure 32 Outputs 1 1 FW RV HT EA IR Intputs AFS JFCRSJFCLS CL SL1 SL2 IL Dewy DIP2 DIP3 DIP4 DIPS DIP6 DIP 7 DIPS Temp 90 F RPM 0 Moisture 1 Step04 Temp Index 50 75 170 12 PRESS TMB1424R Test Cycle Figure 32 It is similar to the Inputs Outputs Menu except that the test step is shown at the bottom of the display and a key press prompt message is shown in the lower right START sex to advance through the steps Refer corner Press to Table 6 for more details of each step Press to terminate the test 239 LED OPL and UniLinc Troubleshooting Inputs Outputs Menu Outputs DM GEA RV EB EA J Intputs DR LD AFS FCRSFCLS CL SL1 5268 RS 1 DIP2 DIP3 DIP4 DIPS DIPG 7 DIPS Temp 180 F RPM 25 Moisture 30 30 29 TMB1425R Inputs Outputs Figure 25 When the Inputs Outputs Menu is accessed through the Diagnostic Menu the user can manually turn on outputs The user can scroll through the outputs using any of the arrow keys the cursor is indicated by flashing the active
98. output on the screen The user must setup the outputs to be turned on The keypad is used to select individual outputs to be turned on or off After the keypad is pressed the control will turn the selected outputs on and display the text RUNNING The outputs cannot be selected until the eser keypad is pressed The text RUNNING is no longer displayed The screen will still show the selected outputs on the screen and the user can again select outputs to be turned on or off If the or ae keypad is pressed at any time during this test the control will turn off all outputs if the test is running or return to the previous screen if the test is not running If the Inputs Outputs Menu is accessed through the Run Diagnostic Menu pressing the keypad during a running cycle the menu shows only what is turned on and off as the cycle runs Refer to Figure 25 240 Abbreviations for the Inputs and Outputs are defined in the following table Inputs DR Loading Door LD Lint Door AFS Airflow Switch FCRS Fan Motor Contactor Switch FCLS Fan Motor Centrifugal Switch CL Cabinet High Limit 51 Store 1 High Limit SL2 Store 2 High Limit IL Ignition Lockout RS Rotation Sensed DIP1 Dip Switch 1 DIP2 Dip Switch 2 DIP3 Dip Switch 3 DIP4 Dip Switch 4 DIPS Dip Switch 5 DIP6 Dip Switch 6 DIP7 Dip Switch 7 DIP8 Dip Switch
99. runs but cylinder does not turn Yes Confirm key is in place Is sheave Yes tighten setscrews Confirm key is in place loose Is belt broken Yes gt tighten setscrews and bushing Replace or or loose Yes cylinder binding Does cylinder turn counterclockwise when viewed from front of machine 3 Phase models only Yes Adjustments adjust belt Check cylinder for binding Refer to Section for proper cylinder adjustment Switch power leads L1 and L2 to correct rotation TMB1875S Troubleshooting 19 Troubleshooting 4 Motor Does Not Stop Motor does not stop Is door Yes Test switch and switch gt replace if inoperative inoperative No Non Metered Test timer and Models Is timer Yes relay and or relay replace if inoperative inoperative No Metered Test Models Is Yes accumulator accumulator and replace if inoperative inoperative No Refer to wiring Is wiring Yes diagram incorrect located inside contactor box No 15 motor relay Check or motor Yes relay contactor contactor and replace if inoperative inoperative TMB1876S 20 70422101R1 Troubleshooting 5 No Heat Condition Non CE and Non Australian Models WARNING To reduce the risk of electric shock fire explosion seriou
100. souk ii AP2 OPL FRONT END CONTROL nal LS m gt A pe i THERWISTOR BUTI sensor 1 p en mu 5 E REVERSING OPTION x r 2 Ej eno yi ue 02 seson N 2avac RETURN s tuse exse REVERSE i ERE m H Riiie 7 2 5 PNK cci i Z A weur 2 REVERSE x m ic X i IIS eoa s ET 555 pur a DAMPER E lic PNK 557 HEAT oe it puc m swe DOOR wi FAN DRIVE CONTACTOR ON NON REVERSING MODELS amp pan acy jane sve AR Hae ET U FAN CONTACTOR ON REVERSING MODELS Bo FAN MOTOR CONTACTOR T TAN puc war a CABNET LMT PNK s _ 1025 030 STOVE LIMIT 2 E 420 00 i 6 2 kr Ee L 8 18 2 suu PNK ALARN HET pes 8 6 1 ICM RESET SI Es PTONAL ALARN A mhg cows EUr i STOVE LWT TET A E pw 83 21 35 5 ICM Lockout i puc 1 22 1 ie E m 77777 925 i 9 m gg Wow Mm ES ce 232 m 9 4 m 99 a SEE SWITCH 23 WORK i ii 2avac lt NETWORK 3558 yann 7 1 common 22 OPTION i gy amp 5 NE 222 GRAMI 1 1 885 Nm py DIAGRAM amp oso Mr Lo FAN i Ms me ict werza
101. switch must be operating properly Section 2 Introduction Model Identification Information in this manual is applicable to these models Gas Steam Thermal Oil Electric CAO050L GU050N PK050N CTO0S0S LTOSOT CTOS50E CA050N HAOSOL PTOSOL CTOS50T LUOSOS CUOSOE CK050N HAOSON PTOSON CUO050S LUOSOT DRSOE2 BTOSOE CT050L HK050N PU050L CU050T PT050S IDR50E2 BU050E CT050N HT050D PU050N IDR50S2 BT050S PT050T DRSSE2 BTOSOE CU050L HT050L SA050L DR50S2 BT050T PU050S DRSSE2 BUOSOE CU050N HT050N SA050N DR50S2 BU050S PU050T GTOSOE DR50G2 BA050L HU050L SK050N DR50S2 BU050T ST050S GU050E DR50G2 BA050N HU050N STOSOD DR55S2 BT050S STOSOT 50 DR50G2 BK050N IPD50G2 STOSOL DR55S2 BT050T SU050S HUOSOE DR50G2 BT050D ITOSOL STOSON DR55S2 BU050S SU050T IPDS50E2 DR50G2 BTOSOL ITOSON SUOSOL DR55S2 BU050T 070505 ITOSOE DR50G2 BTOS0N KA050L SUOSON GTO0SOS UTOSOT KTOSOE 50 DR50G2 BU0S50L KA050N UAOSOL GTOS0T 000508 KUOSOE Pound DR50G2 BU050N KK050N UAO050N GU050S UUO0SOT LTOSOE DR55G2 BA050L KTOSOL UK050N GU050T 0505 LUOSOE DR55G2 BA050N KTO50N UTOSOL IHT050S YTOSOT PTOSOE DR55G2 BT050D KUOSOL UTOSON HTOSOT YU050S PUOSOE DR55G2 BT050L KUOSON UUOSOL HU050S YUOSOT STOSOE DR55G2 BTOSO0N LAOSOL UUO050N HU050T SUOSOE DR55G2 BUOSOL 1 0503 YTOSOL IPD50S2 UTOSOE DR55G2 BU050N LK050N YTOSON ITO0S50S UU050E GA050L LTOSOL YUOSOL ITOS50T GA050N LTOSON YUOSON IKT050S YUOSOE GKO
102. the forward Correct wiring between relay and supply voltage contactor there voltage to terminals T1 T2 and T3 of the forward Replace forward relay contactor s there voltage across L1 L2 and L3 of the motor No Correct wiring between motor and forward relay Yes Is there voltage across the coil of the reverse relay there voltage to terminals L1 L2 and L3 of the reversing contactor there voltage to terminals T1 T2 and T3 of the reversing contactor Is there voltage across L1 L2 and L3 of the motor Continue here from previous page for Reverse Rotation Is there voltage to H2 4 of micro control Make sure unit is in the reverse portion of rotation Replace micro control 52 cylinder rotate Correct the wiring to the relay Correct wiring between relay and supply voltage Replace reversing relay Correct wiring between motor and reversing relay Replace motor Check drive components between motor and cylinder Unit operational TMB2328S b 70422101R1 that Coin Has Been Entered Coin Does Not Fall Into Coin Vault or Coin Drop Sensor Does Not Register That Coin Has Been Entered
103. the slip ring assembly Refer to Figure 27 Remove the three 3 screws holding the slip ring assembly to basket shaft Carefully disconnect the white wire of the slip ring assembly from the set screw on the basket shaft Carefully disconnect the black wire of the slip ring assembly from the connector in the basket shaft Connect one ohm meter probe to the black wire on the basket side of the slip ring assembly and connect the other ohm meter probe to the black wire of the slip ring assembly harness If the metered value is less than 1 ohm proceed to Step 6 If 1 ohm or greater replace slip ring assembly and return to Paragraph 104 Connect one ohm meter probe to white wire on the basket side of the slip ring assembly and connect the other ohm meter probe to the white wire of the slip ring assembly harness If the metered value is less than 1 ohm proceed to Paragraph 107 1f 1 ohm or greater replace slip ring assembly and return to Paragraph 104 107 Troubleshooting From Slip Ring Assembly to Moisture Sensing Baffle Se GA pee and Basket Remove three 3 screws holding slip ring assembly to basket shaft Carefully disconnect the white wire of the slip ring assembly from the set screw on the basket shaft Carefully disconnect the black wire of slip ring assembly from the connector in the basket shaft Connect one ohm meter probe to the connector in the basket shaft Connect the other ohm meter probe to the basket shaft itself If the me
104. the temperature the lower the resistance Replace front end control AP2 TMB2393S 226 70422101R1 LED OPL and UniLinc Troubleshooting Shorted or Open Thermistor AP2 OPL FRONT END CONTROL 5VDC TO SENSOR 1 THERMISTOR SENSOR 1 IN if INPUT 1 INPUT 2 INPUT 3 INPUT 4 SVDC SVDC SVDC SVDC i 1 WHT WHT R N l tyryryryryryryr N 1 TMB2390S 70422101R1 227 LED OPL and UniLinc Troubleshooting 113 Fuses and Transformer Configuration Jumper Check F3 and F4 fuses and verify the jumper Jumper options shown below RED BLU 2 WHT 3 1 WHT BLU 4 SEE VOLTAGE BRN WHT WHT BRN BRN WHT WHT BRN gt OPTION DIAGRAM 228 SECONDARY FUSES 5 X 20mm 3 5A 250V 5 X 20mm 3 25A 250V TRANSFORMER JUMPER DETAILS 230 240V 4 MODELS g 222 24 3 96 r 4 240V JUMPER TRANSFORMER JUMPER DETAILS 200V amp 220V MODELS 208V JUMPER TRANSFORMER JUMPER DETAILS 380V 1 MODELS 2e o4 92 o3 380V JUMPER 400 415V m MODELS 2e o4 02 415V JUMPER 460 480V m MODELS 2e 204 02 o3
105. there supply voltage across terminals 1 amp 4 of motor Does the motor run Replace motor Motor is operational Note For high voltage three phase supply 200 volts or higher the motor is supplied by L1 L2 L3 through the motor contactor terminals T1 T2 T3 Make the appropriate adjustments when doing voltage checks TMB2306S b Please see following page for wiring diagram information 70422101R1 79 Micro Display Control MDC Troubleshooting Motor Will Not Start Run TB1 ul v v e 181 1 SERVICE N e CONNECTION GROUND TERMINAL E x 3 ERMISTOR PRIMARY FUSE 7 A MDC CONTRO 8 VOLTAGE CONFIGURATIONANPUT H2 5 Hee AS FOLLOWS CONTROL L1 4 x SECONDARY bin 5 wo SUPPLY CHASSIS GROUND FUSE ohm 10 watt lg s s 1 25 T POOR SENSING CIRCUIT ALLOWS i 8 250V CONTROL TO TURN ON MOTOR T b m RELAY ONLY WHEN DOOR 15 Door Sense RI CLOSED amp SWITCH IS PRESSED H WHT 8 MOTOR RELAY SECONDARY FS 1 FUSE t 3 5A T Fs 2 START
106. voltage checks Is there 5 volts DC at H3 19 to H3 11 with Check control harness motor off and switch open and 0 H3 and I O Board 1 volts DC with motor running Replace as required and switch closed CAUTION Always power down the machine PRIOR to disconnecting or connecting the H3 harness Once disconnected you can power up the machine for troubleshooting Failure to do so may damage the front end control Replace front end control AP2 210 TMB2379S 70422101R1 ISEE VOLTAGE OPTION DIAGRAM LED OPL and UniLinc Troubleshooting Fan Motor Centrifugal Switch Error 1 FOR LINE VOLTAGE AND 1 AP OPL OUTPUT BOARD MOTOR CONNECTIONS 6 8 poon TRANSFO 1 EL E 6 2 POVER Ed iig h 128 X n z ene te UNT poor Es E ao EE 6 4 geo
107. wiring diagram information 70422101R1 85 Micro Display Control MDC Troubleshooting Unit Will Not Heat Steam 1 181 1 SERVICE N v TBI N CONNECTION 8 5 P E GROUND TERMINAL ue u E u m Er a THERMISTOR PRIMARY RED BLU FUSE Seay z MDC CONTROL H 8 VOLTAGE CONFIGURATION INPUT TEMP REGULATI 2 5 JUMPER H2 2 TO H2 5 AS FOLLO CONTROL CIRCUIT CONTROL 24Vac WIRE JUMPER POWER t ls HEAT RI SECONDARY 120Vac 6 8K ohm 5 watt SUPPLY t CHASSIS GROUND FUSE 240Vac 13 6K ohm 10 wg lg E x z 1257 DOOR SENSNGACIRCUIT ALLOWS 3 250V 8 CONTROL TQATURN ON MOTOR WHT z RELAY ONW WHEN DOOR IS Door Sense R Bd OSED amp SWITCH IS PRESSED 5 8 g SECONDARY FUSE 3 5A T START PULSE INPUT 250V 3 2 in 3 30ma 8 HEAT RELAY TIME 20msec MIN CORE AVAILABLE OUTPUT H3 3 amp H3 4 KH DOOR s OFF WHEN SWITCH MACHINE RUNNING 8 cs LX D WHT WHT ae om COIN DROPS i LINT i oe QRAWER 4 288 F X 5 9 No ar RED BLK e SEE VEND APPLICATION DETAI
108. 050N LUOSOL GTOSOL LUOSON KUO050S GT050N PAOSOL KUO050T GUOSOL PA050N LT050S continued NOTE Control suffixes listed on next page 8 70422101R1 Introduction continued Gas Steam Thermal Oil Electric CAO75L HAO75N PUO75N CT075S LUO7ST CTO7SE CA075N HK075N SA075L CTO7ST PTO75S CUOT7SE CK075N HT075D SA075N CUOT75S PTO7ST DR75E2 BT075E CTO7SL HT075L SK075N CUOT7ST PUO7SS DR75E2 BU075E CTO075N HT075N STO75D DR75S2 BT075S PUO7ST DR80E2 BT075E CUO075L HUO75L STO7SL DR75S2 BTO7ST 8570755 DR80E2 BU075E CU075N HUO75N STO75N DR75S2 BU075S STO75T 075 DR75G2 BA075L IPD75G2 STF7SL DR75S2 BUO7ST SUOT7SS GU075E DR75G2 BAO7SN 170751 STF75N DR80S2 BT075S SUOT7ST HTO7SE DR75G2 BK075N 170753 SUO7SL DR80S2 BT075T 070758 HUOT7SE DR75G2 BTO75D KA075L SUO7SN DR80S2 BU075S UTO75T IPD75E2 DR75G2 BTO75L KA075N UAO7SL DR80S2 BUO75T 000755 ITO7SE DR75G2 BTO75N KK075N UAO75N GT075S UUO7ST KTO75E DR75G2 BUO7SL KTO75L UKO75N GTO75T 0755 IKU075E 75 DR75G2 BU075N KTO075N UTO07SL GUOT75S YTO75T LTO7SE Pound DR80G2 BA075L KU075L UTO075N GU075T YUO7SS LUO75E DR80G2 BA075N KU075N UTF75L HT075S YUOT7ST PTO7SE DR80G2 BT075D LAOT7SL UTF75N HTO75T PUO7SE DR 80G2 BTO75L LA075N UUO075L HUOT7S5S STO75E DR80G2 BT075N LK075N UU075N HUOT7ST SU075E DR80G2 BU075L 170751 5 IPD75S2 UBO75E DR80G2 BU075N 170753 YT075N ITO75S UTO75E GAO075L LUO75L YUO75L ITO75T UU075E GAO075N LUO75N YUO07
109. 1 T wau 6 2 sen POWER me qus ria 1 1 Lys A tas E H6 3 RED BLK Lit E E 885 y5 CT evz mI THR AP2 OPL FRONT END CONTROL 1 7 1 HB8 1 RI gii THERMISTOR BLK SI SENSOR 1 2AVAC eii Uu 1 7 N REVERSING OPTION x rea 5 mmu pi aue HP Sensor i RETURN way D ise Sa i BS urs an puc H I wt Em cow E Reverse E 5 x wear Roc Neut 5 rosae z lt INPUT 4 DAMPER Pu ES Ina HEAT vue pap 8 PNK T MODELS E oR N es lawa A FAN DRIVE CONTACTOR ON NON REVERSING MODELS AR FLOW Em U FAN CONTACTOR ON REVERSING MODELS po FAN MOTOR CONTACTOR M FAN wi CABINET EME yi PNK s _ lo257030 STOVE uin 2 GND ENE 5006 vue 24vDC Pu RS wR H 99 SIGNAL E puc m ALARM DN HET ICM RESET Ph _ i put PTONAL ALARN LNT DOOR 1 s NK BUZZER Ap BY SS coon FAN MOTOR CENT SW B umm s PNK ESARET pm srove 1 i gt gt COMMON ICM LOCKOUT I PNK HA 2 war l ener oer ee nine E 1 p ore 3 Cod ES WA ud 500 2 5 i A i NETWORK T Rx 1 mL m 25 5 2 12 oroa d AR v I 99 222 SEE 33 2avac 28
110. 1 Door Latch 2 Door Catch 3 Acorn Nut Figure 13 70422101R1 39 Aligning Door Strike If the door acorn nut is breaking or the door catch is prematurely wearing refer to Figure 13 a door adjustment may be necessary to align the two striking surfaces a Visually check door strike to catch position to determine if door is striking low or high b Make sure the door frame to the tumble dryer hinge mounting screws are secure c To adjust the strike position slightly loosen both hinge hex bolts until the door frame can be moved If the door is striking low lift up on the door and while maintaining pressure tighten both hinge bolts If the door is striking high push down on the door and while maintaing pressure tighten both hinge bolts Re check strike position and repeat until position is correct 65 Adjustments A wm _ To reduce the risk of electric shock fire explosion serious injury or death Disconnect electric power to the tumbler before servicing Close gas shut off valve to gas tumbler before servicing Close steam valve to steam tumbler before servicing Never start the tumbler with any guards panels removed Whenever ground wires are removed during servicing these ground wires must be reconnected to ensure that the tumbler is properly grounded 40 Drive Belt Tension Proper tension is when drive belt can be Reversing Models depressed 1 2 inch 12 7 mm by applying light Refer to Figu
111. 480V JUMPER TMB2391S 70422101R1 LED OPL and UniLinc Troubleshooting 114 Dip Switch Harness Index Mismatch Verify the dip switches are in the correct position and the jumper harness is installed on front end control AP2 Ll OO re gt gt gt a oo E qi aon lt lt wss 5 sw1 wi Li ON ON 025 035 GAS HEAT a Gi 050 T30 DOMESTIC zd Es MODELS pg MODELS lt 5 1 2 3 7 8 I 1 ON ON oom 030 055 STEAM RI 075 745 py 24 g MODELS MODELS H7 3 2 1 2 3 7 8 gt INPUT 1 5 H7 4 HO x x ON ON eet zuzzag s ELectric WHT INPUT 3 Aa 075 HEAT MODELS WHT 7 6 lt lt lt ka t MODELS 2 INPUT 4 RI 7 8 7 7 lt lt lt O O D Li uj 12 3 nog WIG OO SS ON ON ON eae x GAS HEAT 2 Is i us MURS CUM H7 MODELS gt 5 5VDC x x ES x MODELS ES 12345678 123 7 8 PROGRAMMING DIP SWITCHES ON ON SEE INSTALLATION MANUAL GAS HEAT 120 FOR SWITCH DETAILS om MS MN x MODELS 1 2 3 7 8 ON PAU ar MODELS pg LI RI RS 1 2 3 ON 200 MODELS Ed i28 TMB2388S 70422101R1 229 LED OPL and UniLinc Troubleshooting 115 Electronic Control Testing Models with EO and RE
112. 5N KTO75S YTO75E GK075N PAO75L KT075T YU075E GT075L PA075N KU075S GT075N PK075N KU075T GU075L PT075L LT075S GU075N PT075N LT075T HA075L PU075L LU075S NOTE Control suffixes listed on next page 70422101R1 Introduction Includes models with the following control suffixes reversing vended 30 DX4 OPL 3V DX4 vended 3W reversing DX4 prep for coin 3X DX4 prep for coin BB reversing basic electronic coin BC basic electronic coin BG basic electronic OPL mode BL basic electronic central pay for coin BW reversing basic electronic prep for coin basic electronic prep for coin BY basic electronic prep for card BZ reversing basic electronic prep for card DO DMP OPL DV DMP vended DX DMP prep for coin EO LED 10 KB reversing single coin KC single coin KW reversing prep for coin KX prep for coin KY prep for card KZ reversing prep for card LB reversing network adaptable coin LC network adaptable coin LW reversing network adaptable prep for coin LX network adaptable prep for coin LY network adaptable prep for card LZ reversing network adaptable prep for card NC NetMaster coin NX NetMaster prep for coin NY NetMaster prep for card OM OPL micro QT dual digital timer reversing DX4 OPL RD reversing DMP OPL RE reversing LE
113. 75 Models Only Check for proper operation of cabinet limit Replace if necessary Correct wiring between stove limit and cabinet limit Check stove limit for proper operation Replace if necessary Correct wiring between heater contactor coils and stove limit Correct wiring between heat contactor s and line voltage Continued on next page TMB23518 a 119 NetMaster Troubleshooting KT075 Models Only 64 CE Models Will Not Heat Electric continued Continued from previous page Check for proper operation of contactors Replace if necessary Is there line voltage to the output side of the heat contactors Correct wiring Is there line voltage between the across the elements elements and contactors Check elements for Do elements produce opens shorts heat Replace if necessary Unit operational TMB2351S b 120 70422101R1 NetMaster Troubleshooting KT075 Models Only CE Models Will Not Heat Electric oae t pa 1 240v CONCURATON i E x rS En o i e 25 T 2 10 H4 6 H4 9 H4 2 SNIS x F3 MCC H1 3 Wake me 1 1 5 mP 6 0 H2 2
114. 99 NetMaster Troubleshooting KT075 Models Only 56 Unit Will Not Heat Gas Note Tests are conducted with unit running and calling for heat All voltage checks are referenced to transformer neutral 1 No Is there voltage at FS 2 of control Yes Replace 2 Is there voltage No at FS 1 of control Yes Is there voltage to the No common of the airflow switch Yes Is there voltage to the No N O terminal of the airflow switch Yes 5 No Is there voltage at terminal 13 of the motor control relay Yes 6 No 15 there voltage at terminal 14 of the motor control relay Yes 100 thermistor operational Correct wiring between FS 2 and N O of lint panel switch Replace control Yes Correct wiring between airflow switch and cabinet limit Check for proper operation of airflow switch Replace if necessary Correct wiring between terminal 13 and of airflow switch Replace motor control relay 7 No Correct wiring between motor Is there voltage to terminal 3 of the fan motor centrifugal Switch terminal 3 and motor relay Yes 8 No Check motor for proper operation Replace if necessary Is there voltage at terminal 5 of the fan motor centrifugal Switch Yes 9 No Correct wiring between cabinet limit and terminal
115. D OPL RM reversing OPL micro RQ reversing dual digital timer RU reversing UniLinc OPL SD single drop SX single drop prep for coin UO UniLinc OPL WB reversing network ready coin WC network ready coin WW reversing network ready prep for coin WX network ready prep for coin WY network ready prep for card WZ reversing network ready prep for card 70422101R1 Serial Plate Location When calling or writing about your product be sure to mention model and serial numbers Model and serial numbers are found on serial plate on the rear of machine and inside door Serial Plate Customer Service If literature or replacement parts are required contact the source from which the machine was purchased Wiring Diagram The wiring diagram is located inside the junction or contactor box The wiring diagram part number is in the lower portion of the electrical data on the serial plate 70422101R1 Introduction TMB2235N 11 Introduction How a Tumble Dryer Works Press TMB2347S A tumble dryer uses heated air to dry loads of laundry n When the motor is started the exhaust fan pulls room temperature air in through the air intake at the rear of the tumble dryer and over the heat source bur
116. E DISPLAY 23445 142 70422101R1 Hybrid Timer Control Troubleshooting 74 Display Flashes dr With Door Closed QT and RQ Control Suffixes Display Flashes dr With Door Closed Gas steam and electric heat QT and RQ Single and three phase power supply Control Suffixes Is there voltage between H1 3 amp H4 7 on the control Yes Replace hybrid control Is there voltage at output side of secondary fuse Replace secondary fuse Is there voltage at the input of the secondary fuse Correct wiring between secondary fuse and transformer Connect wiring between COM and output of secondary fuse Is there voltage at COM of door switch Yes Continued on next page TMB2406S 70422101R1 143 Hybrid Timer Control Troubleshooting 74 Display Flashes dr With Door Closed QT and RQ Control Suffixes continued Display Flashes dr With Door Closed QT and RQ Control Suffixes Is there voltage between H1 3 amp H4 7 on the control Yes Gas steam and electric heat Single and three phase power supply Replace hybrid control Is there voltage at the input of the secondary fuse Correct wiring between secondary fuse and transformer Yes 144
117. EN f 5 RUNNING 1 4 6 max 28Vde Imax 5ma ULLA CON DROPS 4 NETWORK AND CARDREADER SCI HS 3215185731717 i SEE VEND APPLICATION DETAIL NOTE FOR NETWORK APPLICATIONS SEE SUPLEMENTAL NETWORK DIAGRAM A A2 AIR FLOW D SWITCH u BRN RED WHT 9 3 E ne we e w m CABINET LIMIT HEAT SOURCE OPTIONS GAS MODELS STEAM MODELS wae 8u IGN STOVE LIMIT ce SEM 1 H THERMOSTAT 1 E TH GND TAN VLT WHT WHT BLK 0 yae war Vi ICM GAS VALVE FIRST COIL eno 7 VALV SECOND COIL TERIS i4 11 1 Q0 TMB2331S 70422101R1 97 55 No Start Run NetMaster Troubleshooting KT075 Models Only Note For steps 2 and 3 For 208 240 1 phase both lines to the motor are controlled by contacts Please check second set of contacts For 3 phase units the three legs supplied to the moter will be controlled by N O contacts Please check all three legs 1 Is there line voltage Yes across terminals 1 and 4 of the motor No 2 Yes Is there voltage on the output of the motor relay No 3 Is there voltage to the No input side of the motor relay Yes 4 Is
118. GAS VALVE FIRST COIL SECOND COIL ak O00 TMB2331S 95 NetMaster Troubleshooting KT075 Models Only 54 Door Open Indicator Door Open Indicator Is there 24 volts across terminals H2 1 and H2 6 on the control there 24 volts to the normally open contact on the lint drawer switch Is there 24 volts to the common terminal of the lint drawer switch at the normally open terminal of the door switch with the doo closed there 24 volts to the common terminal of the door switch Yes Note All voltages are to be measured to transformer common unless otherwise stated Replace control Correct the wiring between the N O terminal on the lint drawer switch to terminal H2 1 on the control Replace the lint drawer switch Correct the wiring between the door switch and the lint drawer switch Check door switch for proper operation Replace if necessary 96 there 24 volts the secondary there 24 volts to the input side of the secondary Is there 24 volts across terminals 2 and 3 of the transformer secondary Is line voltage present across terminals 1 and 2 on he primary side of the transformer Is the primary fuse good to the output side of Correct the wiring betwe
119. H hem 0 wit B nto wir cd NO FAN MOTOR TITITPTS mtd CABINET LIMIT CENTRIFUGAL SWITCH f ath d 1 HERMOSTAT F OFF WHET 8 DIAGNOSTIC MACHINE RUNNING 2 lau LINT FoR SMTA L IGN DRAWER d 10 Atove wit SWITCH Lj Lr HERMOSJAT 1 RED BLK 9 RED a k T 21 yi GND _ C 3 9 0 70422101R1 11 1 2 NO HEAT DROP 1 Ti E A 2 LOW SELECTOR SWITCH 1 MED Switch IN USE LED None Hen H TEMPERATURE 3 SELECTOR SWITCH ge w GAS VALVE FIRST COIL QOQ SECOND COIL 000 HEAT SOURCE OPTIONS 15 STEAM MODELS 6 8 ems STEAM VALVE bwt TMB2345S 157 Hybrid Timer Control Troubleshooting 80 Unit Will Not Heat Gas QT and RQ Control Suffixes Note Tests are conducted with unit running and calling for heat All voltage checks are referenced to transformer neutral Correct wiring Is there voltage to the between cabinet Is Is there volt
120. How to Enter Testing Feature at the beginning of this section To enter press the Start lt 4 keypad The display will show HHHF Fahrenheit or HHHL Celsius Use the Up or the Down X keypad to select desired temperature Press the Start lt gt keypad to begin cycle While the test is running the control will display the temperature estimated in the cylinder F or HHH L Once the cylinder temperature stabilizes at the target temperature the heater is turned off and there is a two minute cool down period During cool down the control will display the time remaining as nn 55 NOTE This test does not increment the Total of Cycles audit counter To exit the test press the Back keypad The control will return to the testing mode Thermistor Temperature Test dEHEr This option displays the temperature sensed at the thermistor in 5 F 3 C increments To start test control must be in the Testing Mode Refer to How to Enter Testing Feature at the beginning of this section To enter press the Start lt 4 keypad The display will show HHHF or The F will show Fahrenheit the C will show Celsius and the HHH will show degrees If control senses a shorted thermistor the display will show SH If the control senses an open thermistor the display will show UP 7 To exit this test press the Back lt keypad
121. INETWORK H2 5 1 e 1 iig 2 OPTION i A 5 5 532 aM E eum e L EXIT 2M Meroe i ge CONTACTOR 1 vraw Hi 2 Mist wrk cas 1 Qi zavac rer Be I r gt TH Lt vate poe STEP n2 Lo mhs yer i Baas i i BEE can ren bg E 12 10 wama FAN MoToR m HK peus i 2 3 BRN WHT T 1 Seya bag RANE Be SITES SEE INSTALLATION MANUAL H2 9 wt er pod 1 Obras Asner E SES NS d UH 2 2 vr EE RES D a ERE 33 Soeur 1 555 88 s 1 GAs STEAM VALVE 1 E x ded rt 2 1 GAS HEAT Stove wir n STEAM 25 225 2 31 swous 1 L wau WOES ony 1 1 au e gt og ues sess Tee Erico quy spe a 02 aste 111 3 B sous E A 123 1 4 uses war wat ME NE ssh 1 OPTIONAL Lond SE 1 1 H7 5 nep war roawr HEAT p d 8 AM SOURCE u aunt eut de wapu DETAIL 1 HI 4 wu aw 2 70422101R1 TMB2383S 215 LED OPL and UniLinc Troubleshooting Troubleshooting the Moisture Sensor Circuit w To reduce the risk of electric shock
122. ITCH t FIRST COIL 9 noo Lee e Le ee 1 2 NO HEAT 000 DRYING TIME COOLING TIME 2 Low SECOND COIL Rete 5 SELECTOR SELECTOR ACT MED m SWITCI START NONE HIGH SWITCH TEMPERATURE SELECTOR SWITCH se FLOW t f HEAT SOURCE OPT one ORG STEAM MODELS 160 TIME DISPLAY STEAM bane X Lem VALVE iem TMB2344S 70422101R1 Hybrid Timer Control Troubleshooting 81 Unit Will Not Heat Electric QT and RQ Control Suffixes Unit Will Not Heat Electric QT and RQ Control Suffixes Note Tests are conducted with unit running and calling for heat there voltage at terminal 5 of fan motor centrifugal Switch Replace fan motor All voltage checks are referenced to transformer neutral 2 there Is voltage at the airflow No Replace H4 1 of hybrid switch working airflow control properly switch Correct wiring Is there between cabinet limit voltage to the input side of the cabinet limit and terminal 5 of fan motor centrifug
123. L Az BRN RED O AIR FLOW SWITCH N O ORG BR w CS 1T ORG ORG WH ur oars HEAT SOURCE OPTIONS CABINET LIMIT EAN MOTOR GAS MODELS STEAM MODELS THERMOSTAT m STOVE LIMIT b cub STEAM THERMOSTAT 1 l TH GND VUT WHT WHT a C D lt C3 T am S We TT 3 ee wat ICM GAS VALVE FIRST COIL ono 11 VALV SECOND COIL id TMB2329S 86 70422101R1 49 Unit Will Not Heat Electric Note Tests are conducted with unit running and calling for heat All voltage checks are referenced to transformer neutral 1 Correct wiring Is there 24 VAC at between FS 2 and FS 2 of MDC control COM of lint panel switch Replace MDC control Replace thermistor Is there 24 VAC on FS 1 of MDC control Is the thermistor operational YES Correct wiring between COM of airflow switch and FS 1 of MDC control Is there 24 VAC at COM of airflow switch Is there 24 VAC at Check for proper N C terminal function of airflow of airflow switch and replace if necessary Switch ry Correct wiring between terminal 7 on motor control relay and N C terminal on airflow switch Is there 24 VAC at terminal 13 of motor con
124. M MODELS IN I STEAM t VALVE TAN 8 VLT WHT WHT BLK WHT TMB2345S 150 70422101R1 Hybrid Timer Control Troubleshooting 77 Motor Will Not Start Run SD and SX Control Suffixes Note test conducted with vend Gas electric and steam heat 1 price satisfied and start button Single and three phase power supply pressed NO Refer to Vend Satisfied No In Use LED SD and SX Control Suffixes flowchart Is there voltage across H3 1 and H3 6 on the electronic control Correct wiring between fan motor and motor control relay Is there voltage across terminals 1 amp 4 of the fan motor Is there voltage across H3 4 and H3 6 on the electronic control Replace control Does the cylinder Replace cylinder motor run motor Is there voltage across the coil of Correct wiring to coil the motor control of motor relay relay Motors are operational Is the unit equipped with single phase or three phase power Single phase 4 15 there voltage at Correct wiring terminal 5 of the between terminal 5 motor control relay and power supply Is there voltage at terminal 6 of motor control relay Replace motor control relay TMB2077S Please see following page for wiring diagram information 70422101R1 151 Hybrid Timer Control Troubleshooting 152 Motor Will Not Start Run
125. MED START NONE HIGH gt i um EL me Sas HEAT SOURCE OPTIONS STEAM MODELS zm I STEAI E TAN 9 xil SIM Ce seno ene 23458 70422101R1 Hybrid Timer Control Troubleshooting 76 In Use LED Lit No Motor Run SD and SX Control Suffixes In Use LED Lit No Motor Run Coin Models fh tinuit Correct or ere continuity replace the through the start switch or start switch nmi start switch circuit wiring there voltage at H3 6 on the control Replace the control Correct wiring there voltage between the across A1 and A2 on the control and motor relay the motor relay 2 70422101R1 there voltage at the input side of the motor relay there voltage at the output side of the motor relay there voltage across the lines of the motor Replace the motor Correct wiring between the motor relay and terminal block Replace the motor relay Correct wiring between the motor and motor relay TMB2354S 149 Hybrid Timer Control Troubleshooting In Use LED Lit No Motor Run SD and SX Control Suffixes
126. NETWORK APPLICATIONS SEE SUPLEMENTAL NETWORK DIAGRAM gt c lt a SEE CONTROL OPTION DIAGRAM FOR CONTACT CIRCUIT DETAILS 1 Bede SERVICE SERVICE GROUND mai SEE EQEL N s zl TRANSFORMER 2558 OPTIONS Pz 5 T WES o uu LS Paes TMB2270S 70422101R1 171 Electronic Control Troubleshooting 87 No Start Run Note For steps 2 and 3 For 208 240 1 phase both lines to the motor are controlled by contacts Please check second set of contacts For 3 phase units the three legs supplied to the moter will be controlled by N O contacts Please check all three legs 1 Is there line voltage Yes across terminals 1 and 4 of the motor No 2 Is there voltage on the Yes output of the motor relay No 3 Is there voltage to the No input side of the motor relay Yes 4 Is there 24 Volts across the coil of the relay No 172 Check motor for proper operation Replace if necessary Correct wiring between the motor relay and the motor Correct wiring supplying voltage to the contacts of the motor relay Check relay for proper operation Replace if necessary 5 Is there 24 volts at terminal H5 3 on the Yes control Measured to transformer neutral No 6 Is there 24 volts to Yes terminal H5 7 on the control No Correct wiring to the control Refer to Door Open Indica
127. OL H1 3 CONTROL POWER T H5 dct SUPPLY 4 1 pes 1 2 1 FAN MOTOR RELAY L ace FORWARD MOTOR RELAY H5 2 4 5 5 TRANSFORMER a SECONDARY REVERSE MOTOR RELAY Wd FUSE H5 14 i 3 125 T HEAT RELAY HS 9 T 8 FREDS RELAY ONLY WHEN DOOR 15 E RED SLU CLOSED amp SWITCH IS PRESSED H5 12 IT H13 AIR FLOW SWITCH MONITOR H5 11 SECONDARY FOR AFS PROVING CIRCUIT Q FUSE START PULSE INPUT 3 5A a lin 3 30mo 250V AVAILABLE OUTPUT TIME 20msec MIN VH IN 7 DOOR 5 RUNNING SWITCH Vmax 28Vde RED w1 9 ep wr E i kd COM N O mal D LINT 1 DRAWER hg SWITCH 18 RED BLK Le E RED BLK rs SEM ay Uo imei AIR FOW 2211 4 18 1 112142 amp 1 1122 3 pi No SEE VEND 9 oRG BRN Q wT oRo 6 APPLICATION DETAIL COM e N C NOTE FOR NETWORK APPLICATIONS SEE SUPLEMENTAL NETWORK DIAGRAM HEAT SOURCE OPTIONS FAN MOTOR Sre GAS MODELS STEAM MODELS B U 8 BLU I BLU BLU vr wy STEAM IGN VALVE STOVE CABINET LIMIT LIMIT 9 WHT THERMOSTAT 1 THERMOSTAT ND TAN 9 TAN 9 wd O 3 e e WHT ICM GAS VALVE FIRST COIL ND VALV SECOND COIL me 1 e ae 000 TMB2274S 70422101R1 179 Electronic Control Troubleshooting 90 Unit Will Not Heat
128. ONLY a2 BRN RED 9 5 3 C OO 900 AIR FLOW SWITCH E 1 0 2 S 9 G WHT WHT aR CF o wem F i5 MOTO CENTRIFIGAL CABINET SWITCH LIMIT 1 THERMOSTAT THERMOSTAT FOR MODLES WITH LINE VOLTAGE OF 240 OR LESS 2 3 4 TMB2343S 137 On Premise Micro Control OM Troubleshooting WARNING To reduce the risk of electric shock fire explosion serious injury or death Disconnect electric power to the dryer s before servicing Close gas shut off valve to gas dryer s before servicing Never start the dryer s with any guards panels removed Whenever ground wires are removed during servicing these ground wires must be reconnected to ensure that the dryer is properly grounded W001R1 71 Error Codes OP Indicates physical open in the thermistor circuit Possible causes are 1 thermistor 2 wiring between control and thermistor 3 control SH Indicates a short in the thermistor circuit Possible causes are 1 shorted thermistor 2 a short in the wiring between control and thermistor 3 control Indicates an open circuit in the thermistor Check thermistor Replace if inoperative Check wiring between control and thermistor Refer to wiring diagram for proper wiring Check control Replace if inoperative Indicates a short circuit in the thermistor Check thermistor Replace if inoperative Ch
129. OTOR RELAY w 31 4 H5 6 e FORWARD MOTOR RELAY 5 2 4 H5 5 el DOOR SENSING CIRCUIT ALLOWS CLOSED amp SWITCH IS PRESSED AIR FLOW SWITCH MONITOR HEAT RELAY WHT ORG FOR AFS PROMNG CIRCUIT NETWORK AND COIN DROPS CARDREADER SCI H6 H2 1221241 1 1 4114515 1 29220002020 AVAILABLE OUTPUT H4 3 amp H4 4 START PULSE INPUT H4 1 amp 4 2 lin 3 30mo TIME 20msec OPTO OFF WHEN MACHINE RUNNING Vmox 28Vdc Imax 5ma L GET SEE VEND APPLICATION DETAIL NOTE FOR NETWORK APPLICATIONS SEE SUPLEMENTAL NETWORK DIAGRAM PRIMARY SEE CONTROL OPTION DIAGRAM FOR CONTACT CIRCUIT DETAILS 13 146 F M L3 MOTOR L2 2 AICONTACTOR u n 9 1 BLU ur glu SERVICE w SERVICE GROUND N L1 LT SEE 5 il LT BLU TRANSFORMER OPTIONS SEE CONTROL OPTION DIAGRAM FOR CONTROL CIRCUIT DETAILS 70422101R1 TMB2270S 169 Electronic Control Troubleshooting 86 Door Open Indicator Door Open Indicator 1 Note All voltages are to be measured to transformer common unless otherwise stated
130. S 118 70422101R1 Note All voltage checks are referenced to neutral unless otherwise stated 1 Is there voltage to FS 2 on the control Is there voltage on FS 1 of the control Is there voltage to terminal 3 on the motor 4 Is there voltage to No terminal 5 on the motor Yes 5 Is there voltage to the No input side of the cabinet limit Yes 70422101R1 64 CE Models Will Not Heat Electric Correct wiring between FS 2 and normally open terminal on the airflow switch AFS Check AFS for proper operation Replace if necessary If no voltage to COM on AFS correct circuit prior to AFS Check thermistor for proper operation Replace if needed Check control Correct wiring between motor terminal 3 and FS 1 on the control Check for proper operation of motor switch Replace if necessary Correct wiring between cabinet limit and motor relay NetMaster Troubleshooting 6 Is there voltage to the No output side of the cabinet limit Yes 7 No Is there voltage to the input side of the stove limit Yes 8 No Is there voltage to output side of the stove limit Yes 9 Is there voltage across No the coils of the heater contactor s Yes 10 Is there line voltage to No the input side of the heat contactor s KT0
131. SECONDARY FUSE 3 5A T a 2 START PULSE INPUT 250v linz 9 30ma HEAT RELAY TIME 45msec MIN 8 8 z AVAILABLE OUTPUT pee MACHINE RUNNING SWTCH EE Vmax 28Vde L RED wT 9 aen wr p 1 100 OHM iN Roes 41 NETWORK AND CARDREADER 3199 M DRAWER 32354687 9101112 FTIIT 1015111288 d 3 42 u SWITCH RED BLK 3 Q RED 8LK NO COM e SEE VEND APPLICATION DETAIL NOTE FOR NETWORK APPLICATIONS SEE SUPLEMENTAL NETWORK DIAGRAM BRN RED ne wer AIR FLOW SWITCH 8 WIT ORG 8 ORG WH RN 7 r Sre AN MOTOR F CENTRIFUGAL SWITCH sRNAWT CABINET LIMIT THERMOSTAT STOVE LIMIT THERMOSTAT 1 TMB2334S 70422101R1 107 NetMaster Troubleshooting KT075 Models Only 59 CE Models No Display 1 5 Correct wiring between fuse F1 and transformer Is there voltage across Is there line voltage on H1 1 and H1 3 on the Replace the control the output side of F1 control Correct wiring Is there line voltage on between fuse F4 the input side of F1 and control Is there voltage coming out of fuse F4 Replace fuse F1 Verify that unit is plugged in Correct wiring between Replace fuse supply terminals and fuse F1 Is fuse F4 good Correct wiring between transformer and fuse
132. STEAM MODELS THERMOSTAT I BLU BLU d IGN STEAM STOVE LIMIT TAN BLU THERMOSTAT 1 E TH GND TAN VLT WHT WHT BLK TAXON TTI WHT AS ICM GAS VALVE FIRST COIL VALV wi SECOND COIL i4 07 70422101R1 TMB2329S 75 Micro Display Control MDC Troubleshooting 45 Door Open Indicator Gas steam and electric heat Reference voltage Single and three phase power supply checks to transformer Is there voltage at H2 1 on the Electronic control 15 there power supplied to the unit Is there 24 VAC at the input of the secondary fuse Is there 24 VAC at output side of secondary fuse Is there 24 VAC at N O of door switch Replace Control Plug unit in and start cycle Correct wiring between secondary fuse and transformer Replace secondary fuse Correct wiring between N O and output of secondary fuse neutral 76 With door closed is there 24 VAC to COM of door switch Is there 24 VAC at N O of lint drawer switch Is there 24 VAC at COM of lint drawer switch with lint panel closed Correct wiring between H2 1 of electronic control and COM of lint drawer switch Check for proper function of door Switch replace if necessary Correct wiring between N O on lint drawer and COM on door switch Check for proper operation repl
133. TE This test does not count towards the total machine run time operation To exit Reverse Motor Test press the Back keypad The control will return to the testing mode Rotation Sensor Test droERE This option shows the RPM of the tumble dryer cylinder To start test control must be in the Testing Mode Refer to How to Enter Testing Feature at the beginning of this section To enter press the Start keypad The display will show r PnHHH The display is updated every ten seconds The test must run for at least six seconds before it can be exited and off for six seconds before the test can be run again NOTE This test does not count towards the total machine run time operation To exit Rotation Sensor Test press the Back keypad The control will return to the testing mode 236 Moisture Sensor Test Shorted Test Jumper dral This step is skipped if the control is not configured for Moisture Sensing When entering this test the control will show ral while flashing the Start LED one second on one second off allowing the user to short the cylinder to the baffle orange jumper When the Start key is pressed this test step energizes the Fan Motor Contactor and Forward Motor Contactor and the control will show HH The moisture sensor test is 30 seconds During this 30 second period the control is continually monitoring the moisture sensor input for the expected short circuit If an in
134. The control will return to the testing mode 234 Machine Configuration Display 2 Test dLonF e This option shows the machine configuration values for the machine type To start test control must be in the Testing Mode Refer to How to Enter Testing Feature at the beginning of this section To enter press the Start lt 4 keypad The display will show L HHH with HHH the number corresponding to the machine capacity Refer to Table 3 Value Description 2 25 30 Pound Tumble Dryer 4 30 45 Pound Stack Tumble Dryer 5 35 55 Pound Tumble Dryer 2 50 75 F75 120 170 200 Pound Tumble Dryer Table 3 To exit Machine Configuration Display 2 Test press the Back keypad The control will return to the testing mode 70422101R1 Machine Configuration Display 3 Test dlonF3 This option shows the machine configuration values for the machine capacity To start test control must be in the Testing Mode Refer to How to Enter Testing Feature at the beginning of this section To enter press the Start lt 4 keypad The display will show d HHH with HHH representing the machine capacity Refer to Table 4 To exit Machine Configuration Display 3 Test press the Back keypad The control will return to the testing mode Value Description 0 Tumble Dryer 17 25 Pound Tumble Dryer 18 30 Pound Tumble Dryer 19 30 Pound S
135. VERSE MOTOR RELAY H FUSE 3 1 25 T HEAT RELAY Noy 8 RELAY ONLY WHEN DOOR IS e Lj RED BLU CLOSED amp SWITCH IS PRESSED HS 12q WHT AIR FLOW SWTCH MONITOR H5 11 SECONDARY FOR AFS PROVING CIRCUIT FUSE ats 3 line 3 30ma 250V AVAILABLE OUTPUT TME 20msec OF WHEN 7 DOOR 5 IMACHINE RUNNING SWITCH E Vmax 28Vdc imax 5i 5 LINT DRAWER la SWITCH 1 gg 8 RED BLK 8 RED BLK I I L CON DROPS CARDREADER BOM Une d zm ont AIR FLOW SWITCH 32354687 9 10 1112 12525878 4 3 42 SEE VEND onc BRN s Q wiT 0806 9 APPLICATION DETAIL na 9 NOTE FOR NETWORK APPLICATIONS SEE SUPLEMENTAL NETWORK DIAGRAM BRN RED Me Le ORG AH BRN 6 wWHT BRI 5 M FAN MOTOR CENTRIFUGAL SWITCH 9 LIMIT THRRMOST T 1 THERMOSTAT TMB2278S 182 70422101R1 Electronic Control Troubleshooting Unit Will Not Heat Electric lt o BLK PDB lt gt E SERVICE L3 3 BLK RED N T CONNECTION zt GROUND TERMINAL HC2 HC2 1 Hc2 PRIMARY FUSES E L L L L L L 2A T
136. aa aaa a o SWTCH 5 9 n a RED BLK SEE VEND APPLICATION DETAIL NOTE FOR NETWORK APPLICATIONS SEE SUPLEMENTAL NETWORK DIAGRAM 5 8 M MAL BRN RED e WHT e gt M 2 os 2 CABINET LIMIT 97 HEAT SOURCE OPTIONS GAS MODELS STEAM MODELS IGN E SEAM D en STOVE LIMIT THERMOSTAT 1 GAS VALVE FIRST COIL SECOND COIL 000 TMB2331S 102 70422101R1 57 Unit Will Not Heat Steam Note Tests are conducted with unit running and calling for heat All voltage checks are referenced to transformer neutral 1 No Correct wiring Is there voltage at between FS 2 and FS 2 of control N O of lint panel Switch Yes Replace control 2 Is there voltage No No at FS 1 of control Is the thermistor operational Yes Yes 3 No Correct wiring between airflow switch and cabinet limit Is there voltage to the common of the airflow switch Yes 4 No Check for proper operation of airflow switch Replace if necessary Is there voltage to the N O terminal of the airflow switch Yes 5 Correct wiring Is there voltage at No between terminal 13 terminal 13 of Te m
137. ace if necessary TMB2348S 70422101R1 1 Micro Display Control MDC Troubleshooting Door Open Indicator e 7181 11 e SERVICE N TBI N CONNECTION P E GROUND TERMINAL CRN VEL 70422101R1 ue LT BLU 3 3 THERMISTOR f PRIMARY BLK 5 FUSE AT a MDC CONTR s d 8 VOLTAGE CONFIGURAT T TEMP REGUL NING t a 2_5 JUMPER H2 2 TO 2 5 AS FOLLOWS CONTROL CIRCUIT CONTROYS 24Vac WIRE POWER C HEAT RELAY SECONDARY 120Vac 6 8K hm 5 watt SUPPLY t CHASSIS GROUND FUSE Z4DVac 136K ohm 10 watt g g x 1 25 8 YOOOR SENSING CIRCUIT ALLOWS 250 CONTROL TO TURN ON MOTOR air RELAY ONLY WHEN DOOR IS Door Sense CLOSED amp SWITCH IS PRESSED i w 2 38 of 4 MOTOR RELAY 2 START PULSE INPUT H3 1 amp H3 2 lin 3 30 1 HEAT RELAY TIME 20msec MIN AVAILABLE OUTPUT i H3 3 H3 4 lal 8 OFF WHEN Bt z 8 MACHINE RUNNING Z Vmax Z8Vde Imox mo
138. age at terminal 5 of the motor control relay Is there supply voltage at terminal 8 of motor control relay Replace motor control relay 10 Is there supply voltage to L1 and L2 of the motor control relay Correct wiring between L1 L2 and power supply Is there supply voltage across L1 amp T1 and L2 amp T2 Replace motor control relay Gas electric and steam heat Single and three phase power supply Is there supply voltage across terminals 1 amp 4 of the motor Does the motor run Is unit equipped with single phase or three phase power supply Correct wiring between motor and motor control relay Replace motor Single phase Three phase Also see Note on next 12 Is there supply voltage between L2 amp L3 of motor control relay Is there voltage across terminals L2 amp T2 and L3 amp T3 Correct wiring between L2 L3 and supply Replace motor control relay Is there supply voltage at terminal 6 of motor control relay Is there supply voltage at terminal 9 of motor control relay Correct wiring between terminal 6 of motor control relay and supply Replace motor control relay gt gt 78 TMB2306S a 70422101R1 Micro Display Control MDC Troubleshooting 46 Motor Will Not Start Run continued 9 Correct wiring between motor and motor control relay Is
139. age at the airflow Replace input side of the limit and terminal 5 H4 1 of hybrid Switch working airflow cabinet limit of fan motor control properly Switch centrifugal switch there voltage at output of Replace cabinet cabinet limit limit Correct wiring there voltage between terminal 13 at terminal 13 of on motor control motor control and H4 1 on relay hybrid control Is there voltage to the Correct wiring input side of the stove between stove limit 1 limit and cabinet limit there voltage at terminal 14 of Replace motor motor control control relay relay Is there voltage at output of Replace the stove Correct wiring the stove limit limit Is there voltage at between terminal 3 terminal 3 of fan of fan motor motor centrifugal centrifugal switch Switch and terminal 4 of motor control relay Is there voltage to Correct wiring terminal 2 of between terminal 2 the Ignition Control of ICM and stove Module ICM limit there voltage at terminal 5 of fan motor centrifugal switch Replace fan motor TMB2317S a 158 70422101R1 Hybrid Timer Control Troubleshooting 80 Unit Will Not Heat Gas QT and RQ Control Suffixes continued Note Make sure unit is not in a lock out di condition Is there voltage at NO terminal 1 of ICM Replace ICM board board YES Is there voltage across NO ul the coils of the gas
140. age on the input side of the motor relay terminals Check to common line No Correct wiring from line supply voltage to motor relay Yes 188 Yes there voltage across the coil of the motor relay No Yes there voltage across H5 3 and H5 4 of the control No there voltage to Yes H5 7 on the control No Correct wiring to control Refer to CE Models Door Open Indicator Check for proper operation of relay Replace if necessary Correct wiring between control and motor relay Press start button If machine doesn t start replace control TMB2291S 70422101R1 Electronic Control Troubleshooting CE Models No Start Run Li e 3 CONNECTION x P E GROUND T cap TERMINAL PRIMARY gt 7 g FUSE x a 2AT 5 250V a CHASSIS 5 5 amp 3 TR SEE CONTROL OPTION DIAGRAM 81 11 70422101R1 BLK BRN hs K4 TBI N IRANSFO CONFIGUR RME ATION JUMPER D FTAILS 123405 6 240V CONFIGURATION JUMPER 250 240 MODELS Ti BRN BRN T LT BLU guc L2 T2 L2 eo HT e _ T2 K4 BLK K4 K5 T3 oe RED BLU 9 LT BLU Z RED T
141. age to common of LDS No Replace control Correct wiring between H2 1 on control and normally closed on airflow switch Check AFS for proper operation Replace if necessary Correct wiring between LDS and AFS Check LDS for proper operation Replace if necessary 6 Is there voltage to Yes output side of door switch DS No 7 Is there voltage to Yes common terminal on DS No 8 Is there voltage to Yes output side of fuse F3 No 9 15 there voltage to input side of fuse F3 No 10 Is there voltage across Yes transformer secondary No Refer to steps 4 5 and 6 of CE Models No Display Replace transformer if necessary Correct wiring between DS and LDS Check DS for proper operation Replace if necessary Correct wiring between fuse F3 and DS Check fuse F3 for proper operation Replace if necessary Correct wiring between transformer and fuse F3 TMB23148 70422101R1 NetMaster Troubleshooting KT075 Models Only CE Models Door Open Indicator MCC H2 4 _ 4 ICM IGN 22 z 3 oi 5 s s GAS MODELS STi H RRL csv RRS
142. al switch Correct wiring Is there between voltage at terminal terminal 13 on 13 of motor motor motor control there control relay relay and hybrid voltage at output Replace control side of cabinet cabinet limit limit there voltage at terminal 14 of motor control relay Replace motor control relay Is there voltage to the input side of the stove limit Correct wiring between stove limit and cabinet limit Correct wiring Is there between terminal of fan voltage at terminal i 3 of fan motor motor centrifugal ere trifuqal switch and voltage at output Replace the m Ko terminal 14 of side of the stove stove limit switch ae motor control limit relay continued on next page TMB2318S a 70422101R1 161 Hybrid Timer Control Troubleshooting 81 Unit Will Not Heat Electric QT and RQ Control Suffixes continued continued from Note Please make the previous page appropriate adjustments if your unit is single phase Is there Correct wiring Check elements for voltage across the between shorts or opens coil s of the heater heater Do all elements Check wires contactor s pipa ig produce heat between contactors Ves YE and elements Unit is orrect wiring voltage to the T1 2 between HC1 i and T3 termina
143. ance ranges from 150K Ohms to 19K Ohms in temperature ranges from 40 to 120 F 4 to 48 C Replace temperature sensors TMB2196N 58 70422101R1 Fire Supression System Troubleshooting 32 Water Discharge but No Fire IMPORTANT Electric Models If water has discharged into machine you MUST perform this diagnostic test with NO HEAT to the machine Is the unit Set a reversing control model to nonreversing Electric Models Set to no heat Is the cylinder turning clockwise Correct input wiring to change phase Fan is spinning Retest system Is the vent blocked or restricted Is the resistance for both temperature sensors within the acceptable range Sensor 1 H4 1 to H4 2 Clear vent ease restrictions Refer to Installation Manual for proper venting Replace fire suppression system control board Retest system Reset fire suppression system control backward Sensor 2 H4 4 to H4 3 No x Acceptable resistance ranges from 150K Ohms to 19K Ohms in temperature ranges from 40 to 120 F 4 to 48 C Replace temperature sensors TMB2258N 70422101R1 59 Fire Supression System Troubleshooting 33 Tumble Dryer Does Not Operate and Light Is Off Check power Is voltage to fire N to tumble dryer suppression sys
144. and proper gas pressure Replace gas valve or coils of gas valve Is there a flame Is there voltage to terminal 2 of the ignition control Correct wiring between ignition control and stove limit Unit operational TMB23278 b 48 70422101R1 Troubleshooting 27 Control No Fan Motor Rotation With Cycle Selected and Start Pressed 208 240 Volt 60 Hertz 3 Phase and 480 Volt 60 Hertz 3 Phase Electric Reversing Models 208 240 Volt 60 Hertz 3 Phase and 460 480 Volt 60 Hertz 3 Phase Gas Reversing and Steam Models OM Models No fan motor rotation with cycle selected and start pressed Is there voltage across the primary of the transformer Correct wiring to transformer Check fuses Is there 24 VAC across terminals 2 amp 3 of the transformer secondary Replace transformer Is there voltage to the COM of the door switch Correct wiring to door switch Check fuse Is there voltage to the N O terminal of the door switch Check door switch for proper operation Replace if necessary Is there voltage into lint panel switch Correct wiring between door switch and lint panel switch 70422101R1 Is there voltage out of lint panel switch Is there voltage to H2 8 of micro control Is there voltage t
145. atus open or closed CL HH Cabinet High Limit Thermostat Status HH represents input status open UP or closed CL Bb HH Stove High Limit Thermostat 1 Status HH represents input status open UP or closed CL Big HH Stove High Limit Thermostat 2 Status HH represents input status open UP or closed CL dd iP DIP Switch Status ICM Alarm Status d ilar ICM Reset Test External Alarm Test ddr Jon Dryer On Temperature Test Thermistor Temperature Test dlanFe Machine Config 2 Display dl anF a Machine Config 3 Display dAFS Airflow Switch Test FAR Fan Motor Test ddAnPr Damper Motor Test drEu5E Reverse Motor Test drot AE Rotation Sensor Test dent P Moisture Sensor Test Shorted test jumper dent 2 Moisture Sensor Test Resistance test jumper Tests only shown if enabled by the DIP switch configuration 230 Table 1 70422101R1 d A9 Diagnostic Tests L Press the Start 5 Control Software Version Number Test bro keypad Press the Up the Down X keypad to scroll through the Diagnostic Test options 70422101R1 Y ddoor Loading Door Status Y dL ink Lint Door Status Y dHERE LED OPL and UniLinc Troubleshooting To enter a diag
146. aw MODELS GAS 1 i iis ase GAS HEAT mon H2 7 TAN Sw E Aisne BOS vo 1 Q ih STEAM VALVE 2j 8 7a i H2 raw wau ony 1 1 I 1 L a Jn sh i TORA we E gy r gt wet w Amr pog Em ore 129 pas p 4 7 i 23 78 DOR do ane p H7 3 wat pod 1 OPTIONAL NA C 1 I H7 5 renr RED WAT J MS 7 1 FAULT INPUT e TLU i H 4 au 202 TMB2383S 70422101R1 LED OPL and UniLinc Troubleshooting No Drive Motor Rotation Drawing 2 of 2 NOTE The door and lint door must be closed for voltage to be present at the forward and reverse outputs TB1 N zi E 500V P BLK RED qd li T umm Tn T gt d TERMINAL FN0 1 2 T I 1 a 3 Ed OR CO L CIRCUIT DETAILS TMB2387S 70422101R1 203 LED OPL and UniLinc Troubleshooting 98 Stove and Cabinet Limit Errors UniLinc Error Display Stove and Cabinet Limit Errors LED OPL Error Display E Cab E SL E SL2 NOTE The machine must currently be trying to heat with airflow switch closed fan motor contactor engaged and fan motor centrifugal switch closed before checking the status of the cabinet stove and stove 2 limits NOTE The machine must c
147. ay and MCS Check MCS for proper operation Replace motor if necessary Electronic Control Troubleshooting No Correct wiring between stove limit and MCS Is there voltage to input side of the cabinet limit CT Yes 8 No Check CT for Is there voltage to the proper operation output side of the CT Replace if necessary Yes Steam See next page Gas 9 No Correct wiring between ST 1 and CT Is there voltage to input of ST 1 Check function Is there voltage on of ST 1 output side of ST 1 Replace if necessary Correct wiring between terminal 4 and ST 1 Is there voltage on terminal 4 of ignition control module Is there voltage on Correct wiring terminal 2 of ignition between terminal module 2 and fuse F3 Continued on next page TMB2292S a 191 Electronic Control Troubleshooting 94 CE Models Will Not Heat Gas Steam continued Continued from previous page GAS Check valve for proper operation Replace if necessary Verify correct pressure and gas supplied to machine Is there voltage supplied to gas valve Verify control is NOT going into lock out Correct wiring between valve and ICM Replace ICM if necessary Continued from previous page Steam Check SV for proper operation Replace if necessary Verify steam is properly supplied to machine Is there voltage across steam
148. cas i zavac mer 2 r Lt 1 I BRE H2 4 gr L whs i E 2233 II I BEES 5858588 T M i FAN i h s A E oM y i T 2 3456785 E ZEOGRAWMNG DP XO E SOR DETAILS 4E casiner ur NI eost ERR 8 8 aaa Bete gg 022 1 ttt 88 Stove 955 ae sw sm 58 ons Moots STEAM iE I eee m x a Ld qi mm OAS HEAT va SED E E in unco WeNoS 2 STEAM vave 211 I S210 EM I 23 7a I GAS i Vis 11 Io oe L MOORE i SEM en f e wer HS o canoer 2 vryer MAH i i 5110 E Meus OY S 2 rg T23 DUE b g es 47 3 wer wa yd zc V see 1 5 HEAT L J a stesso 1 SOURCE pr u aunt eut de wapu DETAIL i i H7 4 wu E 70422101R1 TMB2383S 211 LED OPL and UniLinc Troubleshooting 102 Close Door Indication NOTE Before proceeding check the lint door loading doors and switches for proper mechanical operation Is there 24 volts AC at H6 1 to H6 9 Check Transformer and Fuse F3 NOTE If the voltage is present but Yes lower than 24 volts AC ensure the correct transformer configuration jumper is installed No Is there 24 volts
149. ct wiring 24 VAC across between H3 3 and H3 4 on transformer and the control control Is there VAC al Replace primary output of m fuse s rimary fuses s the 6 y No Replace control fuse functional control fuse Is there 120 VAC across terminals 1 amp 2 of transformer primary Correct wiring Replace between primary control fuse and transformer No TMB2251S 70422101R1 123 On Premise Micro Control OM Troubleshooting Control Has No Display e 181 1 SER 4 TBI N me car poa Ro a 5 lt ue UM 4 FAN 6 MOTOR SECONDARY d fus MODELS RM MODELS 250 THERMISTOR THERMISTOR U UUUUUUUUU UUOGCUO v H 5 92 6 2 123 8 4 5 9 1 7 10 crassis 6 21 4 41 71 m GROUND OPL MICRO 1 rue usi CONTROL conmo 24VAC IN 2 24VAC EXT RET 1 24VAC EXT n B ext H Es M HEAT FAN 8 RELA RELAY LINT vy 9 v v 8 DOOR PANEL 9 8 135 14 1 2 1216 FI 1 2 10111 SWITCH SWITCH RED WHT RED BLK U RED BLK RED BLK 3 4 Pha 8
150. d to Step 7 If 1 ohm or greater replace harness and return to Paragraph 104 7 Connect one ohm meter probe to the connector in the basket shaft 8 Connect the other ohm meter probe to one of the moisture sensing baffles Refer to Figure 26 If the metered value is less than 1 ohm proceed to Step 9 If 1 ohm or greater proceed to Paragraph 109 9 Connect one ohm meter probe to the connector in the basket shaft 10 Connect the other ohm meter probe to the other moisture sensing baffle If the metered value is less than 1 ohm circuit is functioning properly double check machine configuration and cycle programming If 1 ohm or greater proceed to Paragraph 109 109 Troubleshooting at the Moisture Sensing Baffles with Machine Basket Removed 1 Disassemble moisture sensing baffle and inspect for lint buildup and foreign objects Verify wire harness connections 2 Disassemble other moisture sensing baffle and inspect for lint buildup and foreign objects Verify wire harness connections 3 Double check machine configuration and cycle programming 70422101R1 221 LED OPL and UniLinc Troubleshooting 110 Fan Motor Contactor Error 222 UniLinc Error Display Fan Motor Contactor Error LED OPL Error Display E FCon NOTE Before performing these checks the airflow switch must be pulled in and the motor must be running Check Transformer Is there 24 volts AC at H6 1 to H6 9 and Fuse F3 NOTE If the vol
151. dels Will Not Heat Gas continued Continued from previous page Does the gas ignite and stay on Unit operational Check valve for proper operation Replace if necessary Verify that the correct gas and gas pressures are supplied Verify that the control is not going into lockout TMB2349S b Please see following page for wiring diagram information 70422101R1 115 NetMaster Troubleshooting KT075 Models Only 116 CE Models Will Not Heat Gas qr E H4 10 ES MODELS d sv TMB2336S 70422101R1 63 CE Models Will Not Heat Steam CE Models Will Not Heat Steam Is there voltage on FS 2 on the control Is there voltage at FS 1 on the control Is there voltage to terminal 3 of the motor Note Voltage checks referenced to neutral unless otherwise stated No Correct wiring between AFS and FS Check thermistor for proper operation Replace if needed Replace control if thermistor is okay Correct wiring between the motor and FS 1 on the control
152. e Selected Start Button Pressed and Door Closed 42 70422101R1 1 24 OM Control No Display After Selecting One of the ON SELECT Keys 44 25 Electric OM Control No Heat With Cycle Selected Unit Running and Calling For Heat 45 26 Gas OM Control No Heat With Cycle Selected Unit Running and Calling For Heat 47 27 OM Control No Fan Motor Rotation With Cycle Selected and Start Pressed sss 49 28 OM Reversing Control No Cylinder Rotation or Reversing Capabilities esses 5 29 Coin Does Not Fall into Coin Vault or Coin Drop Sensor Does Not Register that Coin Has Been Entered 53 30 Cylinder Is Stained a 56 Section 4 Fire Supression System Troubleshooting 57 31 Tumble Dryer Does Not Operate and Light Is On 58 32 Water Discharge but No Fire 59 33 Tumble Dryer Does Not Operate and Light Is Off 60 34 Tumble Dryer Operates but Water Does Not Discharge and Light Is On see 61 Section 5 Adjustments 63 35 Main Gas Burner Air Inlet Shutters Gas Models
153. e dryer if a fire has occurred IMPORTANT The fire suppression system is designed to diminish a laundry fire starting inside a fire suppression system equipped tumble dryer The fire suppression system is not designed to stop or eliminate high temperature and spontaneous combustion situations Follow all instructions in the installation manual to ensure the fire suppression system operates properly Train all operators in the proper preventative maintenance of the fire suppression system TMB1998N 1 Temperature Sensors 4 Lint Screen 2 Fire Suppression System Control Box 5 Load 3 Water Flow to Machine 6 Loading Door Figure 1 70422101R1 13 Introduction Temperature Sensor Two temperature sensors are located in the cylinder area of the tumble dryer to provide temperature readings Refer to Figure 1 and Figure 2 These temperature sensors will trigger a mode change based on a pre set temperature trip point 5 4 1 Opening for Auxiliary Alarm Cable 5 Light 2 Fuse 6 Reset Button 3 Auxiliary Alarm Fast On Connection 7 Auxiliary Alarm Fast On Connection 4 Test Button Figure 2 14 TMB1999N 70422101R1 Modes of Operation Power Up Mode Sends power to control begins a status check Introduction of the system Can send control into Idle Mode or Lockout Mode Idle Mode Machine is operable while it monitors temperature sensor readings
154. e the stove limit Correct wiring between terminal 2 of ICM and stove limit 2 156 14 Is there voltage at terminal 1 of ICM board Is there voltage across the coils of the Note Make sure unit is not in a lock out condition No Replace ICM board Correct wiring between gas valve and ICM gas valve board Replace gas Is there gas flow valve oils r through gas complete gas valve value Replace high Does the igniter voltage spark ignition cable or igniter No Is there a flame Unit operational TMB2316S b 70422101R1 Hybrid Timer Control Troubleshooting Unit Will Not Heat Gas SD and SX Control Suffixes 1 _ lt lt e 781 1 SERVICE N TBI N CONNECTION WE SUM 1 PRIMARY 3 TERMINAL FUSE 2A T 3 250V 5 E 4 a 54 THERMISTOR oH 5 CONTROL lus s VOLTAGE CONFIGURATION INPUT CONTROL CREUT CON NON 9 JUMPER H3 1 TO H3 5 AS flows POWER HEAT RELAY 24Vac WIRE JUMPER SUPPLY DOOR SENSING CIRCUIT ALLOWS iT CONTROLO TURN ON MOTOR Door Sense Ri 4 H3 2 RELAY WHEN DOC IS MITCH I UHT SECONDARY EN 3 M az 1 f RED M FAN MOTOR RELAY 2 AIR FLO SWITCH TY wroc RN OB ORG WHT DOOR HEAT RELAY MC SWITC
155. eader H5 Refer to Figure 25 2 At the slip ring assembly unplug the moisture sensing harness on the control side of the slip ring assembly Refer to Figure 27 TMB2398S Connector Black Wire Moisture Sensing Harness Slip Ring Assembly Harness Set Screw White Wire Screws Figure 27 3 The harness from the control leads into a junction panel before reaching the slip ring assembly Inspect junction panel for intermittent connections or unplugged harnesses Refer to Figure 28 218 70422101R1 LED OPL and UniLinc Troubleshooting TMB2399S Figure 28 4 An additional harness connection exists between the junction panel and the slip ring assembly Inspect connection for intermittent connections or unplugged harness 5 Insert ohm meter probes into pins and 2 of the harness unplugged from H5 If the metered value is infinite resistance open load OL proceed to Step 6 If not replace harness and return to Paragraph 104 6 Create a direct short between pin and 2 of the moisture sensing harness on the control side of the slip ring assembly Refer to Figure 27 If the metered value is less than 1 ohm proceed to Paragraph 106 If 1 ohm or greater replace harness and return to Paragraph 104 70422101R1 219 LED OPL and UniLinc Troubleshooting 106 Troubleshooting At Slip Ring Assembly 1 Qv de cum At the slip ring assembly unplug the slip ring assembly harness on the control side of
156. eck wiring between control and thermistor Refer to wiring diagram for proper wiring Check control Replace if inoperative 138 70422101R1 Section 9 Hybrid Timer Control Troubleshooting SS To reduce the risk of electric shock fire explosion serious injury or death Disconnect electric power to the tumbler before servicing Close gas shut off valve to gas tumbler before servicing Close steam valve to steam tumbler before servicing Never start the tumbler with any guards panels removed Whenever ground wires are removed during servicing these ground wires must be reconnected to ensure that the tumbler is properly grounded 70422101R1 139 Hybrid Timer Control Troubleshooting 72 Coins Ignored When Entered Gas and electric heat Single and three phase power supply Start coin drop diagnostic tests Exit diagnostic testing and reset control Prompting for vend price Does the light on the control increment properly 15 connector H2 on the Reconnect and run control firmly seated in diagnostic test its receptacle again Is the 3 pin connector Reconnect and run between coin drop and diagnostic test control connected again correctly Are wires exiting coin drop optical sensor cracked or broken Replace coin drop or optic switch Replace coin drop If problem still exists then replace the electronic control 140 TMB2051S 70422101R1 Hybr
157. ee 8 RELAY ONLY WHEN DOOR IS RED BLU CLOSED amp SWITCH IS PRESSED 5 12 5 13 AIR FLOW SWITCH MONITOR SECONDARY FOR AFS PROVING CIRCUIT Q FUSE START PULSE INPUT 35A T H4 1 amp H4 2 AVAILABLE OUTPUT OFF WHEN DOOR 5 MACHINE RUNNING SWITCH Vmax 28Vde nE0 wi1 9 RED WHT inexs5me N O LINT DRAWER SWITCH RED BLK L d props diye od AIR Hiiiiisl1iUv27 i12i i1 5221 l11i1451i1il SEE VEND 4 0RG BRN APPLICATION DETAIL ne 9 NOTE FOR NETWORK APPLICATIONS SEE SUPLEMENTAL NETWORK DIAGRAM _ore iro ORN WT 5 HEAT SOURCE OPTIONS FAN MOTOR GAS MODELS STEAM MODELS BLU 9 B U 9 a wr STEAM z STOVE CABINET t LIMIT LIMIT VLT WHT WHT BLK WHT THERMOSTAT 1 THERMOSTAT ND TAN CCC TAN 6 V T WHT p 3 WHT ICM GAS VALVE FIRST COIL GND VALV SECOND COIL GRN YEL 14 w 22745 70422101R1 88 Unit Will Not Heat Gas Note Tests are conducted with unit running and calling for heat All voltage checks are referenced to transformer neutral 1 No Is there voltage at H5 13 of control Yes Replace ther Is there voltage No at H5 1 of control Yes 3 Is there voltage at input No
158. en the fuse and the common terminal of the door switch Yes Check fuse Replace if necessary Correct wiring between the transformer and Yes the fuse Yes Replace transformer No Replace the primary fuse Correct wiring from terminal block to transformer Verify that unit is connected to power and the power is on TMB2332S 70422101R1 NetMaster Troubleshooting KT075 Models Only Door Open Indicator TB1 L1 TBi Li SERVI 9 d 4 TBI N CONNECTION 3 PRIMARY E 5 TERMINAL FUSE 2A T 250V B a d E 5 chassis 1 M ne 3 THERMISTOR m NETMASTER CO B VOLTAGE CONFIGURATI on 2 JUMPER H2 2 TO yrs CONTROL loc PECONDART 120Vac 6 8K hm 5 wat SUPPLY CHASSIS GROUND U 4 1 257 2 250V 8 WHT s RELAY ONLY WHEN DOOR IS CLOSED amp SWITCH IS PRESSED 8 w w WHT 4 MOTOR RELAY rs Fs 2 START PULSE INPUT WHT ORG 7 1 amp H7 2 In 9 30mc HEAT RELAY TIME 45msec MIN x AVAILABLE oUTPUT ff 18 H7 3 amp H7 4 m 8 OPTO OFF WH
159. ep energizes the Fan Motor Contactor and Forward Motor Contactor and the control will show HH The moisture sensor test is 30 seconds During this 30 second period the control is continually monitoring the moisture sensor input for the expected moisture sensor level If an intermittent signal or unexpected resistance is sensed before the time expires the test is terminated and the control will show UPEn indicating that the test has failed At this time the user has the option to press the Back keypad to return and run the test again If the control ran the test reading the expected moisture sensor level and without an inttermittent signal or unexpected resistance PASS will be shown If either the loading or lint doors are opened during the test the control will reset the test step and allow it to be run again When the test is complete and result is displayed the control sounds a 5 second audio signal Press a key to advance to the next test step If the Up or Down keypad is pressed while the test is in progress the control will toggle between HH eal HH and HHH If the display is left on ral HH or Snar HHH for 5 seconds the control will revert to showing ral P 70422101R1 LED OPL and UniLinc Troubleshooting 237 LED OPL and UniLinc Troubleshooting Production Test Cycle To Enter Production Test Cycle 1 Be certain control is in Idle Mode 2 Whi
160. er to Figure 21 or Figure 22 Alcohol Moistened Cloth DRY2406N Figure 23 Old Style Spring Coin Drop DRY2090N Figure 21 70422101R1 71 Adjustments f Clean light sensors with a soft brush or air spray duster Refer to Figure 24 Light Sensors DRY2407N Figure 24 g Close cover for coin drop h Coin Drops with OLD Style Spring Move spring back over cover catch 1 Reinstall coin drop into machine j Reconnect electrical power to machine and drop k Add a coin to drop to verify that coin drop is operating properly and that electrical connection is working properly 72 70422101R1 Section 6 Micro Display Control MDC Troubleshooting 43 Coins Ignored When Entered Gas and electric heat Single and three phase power supply Start Coin drop diagnostic tests Refer to programming manual ProductionTest Cycle section Exit diagnostic Does the display on the testing and reset electronic control 2 control Prompting increment properly for vend price Is connector H5 on the Reconnect and run control firmly seated in diagnostic test its receptacle again Is the 3 pin connector Reconnect and run between coin drop and diagnostic test control connected again correctly Are wires exiting coin drop optical sensor Replace coin drop cracked or broken Replace coin drop If problem still exists then replace the e
161. er to the tumble dryer before servicing Never start the tumble dryer with any guards panels removed Whenever ground wires are removed during servicing these ground wires must be reconnected to ensure that the tumble dryer is properly grounded W240R1 wanne _ Repairs that are made to your products by unqualified persons can result in hazards due to improper assembly or adjustments subjecting you or the inexperienced person making such repairs to the risk of serious injury electrical shock or death W007 Al If you or an unqualified person perform service on your product you must assume the responsibility for any personal injury or property damage which may result The manufacturer will not be responsible for any injury or property damage arising from improper service and or service procedures NOTE The WARNING and IMPORTANT instructions appearing in this manual are not meant to cover all possible conditions and situations that may occur It must be understood that common sense caution and carefulness are factors which CANNOT be built into this tumbler These factors MUST BE supplied by the person s installing maintaining or operating the tumbler Always contact your dealer distributor service agent or the manufacturer on any problems or conditions you do not understand 70422101R1 Locating an Authorized Service Person Manufacturer is not responsible for personal injury or pro
162. est come out of valve manifold valve outlet Is wiring between No Correct wiring Are water hoses valve and fire Refer to wiring or the manifold suppression system diagram on the nozzle clogged control good following page i Yes Y Clear any Replace fire debris suppression system Y control Reset fire suppression system Y control Retest Retest TMB2199N 70422101R1 61 Fire Supression System Troubleshooting Tumble Dryer Operates but Water Does Not Discharge and Light Is On TO PRIMARY CIRCUIT e TRANSFORMER 24V 24 154 3 ft 4 a x E m 8 FROM MACHINE i TRANSFORMER TEMPERATURE SENSOR i i c wt 4 2 F TEMPERATURE FIRE SENSOR SUPPRESSION Wau n SYSTEM yi 04 73 CONTROL BOARD BLK B H4 5 TEST amp 58 5 9H4 6 CONTROL POWER SUPPLY 1 H2 2 LOCKOUT LED Se S 5 25 g Gn 4 20 ge A 2 Su 2 245 58 r Bar Oi 25 Ee DRG WHT H2 3 a lt 5 H RESET in vur gG B He 4 z i i WATER VALVES 5 si od lt RT he 7 2 TO MACHINE TMB2200N 62 70422101R1 Section 5 Adjustments A
163. ever the adjustment should be made when the cylinder is NOTE Turning the adjusting bolts clockwise will raise the cylinder and turning them counter clockwise will lower the cylinder Turn both bolts evenly to adjust top and bottom clearance Turn a Open loading door and check the gap between one or the other adjusting bolt in or out to adjust the center of the front panel top flange and the side clearance cylinder rim Proper adjustment is when the 2 gap is 1 2 3 4 inch 12 7 19 05 mm Refer f After the cylinder is properly adjusted tighten the adjusting bolt locknuts and the four trunnion housing bolts g Install the belt guard removed in Step b to Figure 16 b Remove drive guard c Loosen the four trunnion housing bolts Refer to Figure 14 NOTE If adjusting the trunnion housing fails to d Loosen the locknuts on the trunnion housing correct the clearance the problem is probably due adjusting bolts Refer to Figure 14 to a worn trunnion shaft or bearings Inside lt Of Cylinder Cylinder Rim Front Panel 9 32 1 32 Flange Clearance Front Panel Flange Fore Aft Top Shown Clearance T218SE3C Figure 16 70422101R1 69 Adjustments A To reduce the risk of electric shock fire explosion serious injury or death Disconnect electric power to the tumbler before servicing Close gas shut off valve to gas tumbler before servicing
164. f the fan motor relay Replace relay 5 No Check wiring Is there voltage at between motor terminal 3 of the fan motor terminal 3 and motor relay Yes 178 6 Is there voltage at No terminal 5 of fan motor relay Yes Is there voltage to the No input of the cabinet limit Yes Is there voltage to the No output of the cabinet limit Yes No Does the steam valve open Yes Verify that the correct steam is supplied to the unit Verify that the steam valve and other items were installed according to the Installation Manual Check motor or replace if necessary Correct wiring between cabinet limit and terminal 5 of fan motor Check cabinet limit for proper operation Replace if necessary Check steam valve for proper operation Replace if necessary TMB2276S 70422101R1 Electronic Control Troubleshooting Unit Will Not Heat Steam 1 THERMISTOR SEE VOLTAGE Ql OPTION DIAGRAM CONNECTIONS TEMP REGULATIN 8 7 8 321 TUMBLER COMTR
165. fire explosion serious injury or death Disconnect electric power to the tumble dryer before servicing Close gas shut off valve to gas tumble dryer before servicing Close steam valve to steam tumble dryer before servicing Never start the tumble dryer with any guards panels removed Whenever ground wires are removed during servicing these ground wires must be reconnected to ensure that the tumble dryer is properly grounded W002R1 NOTE Troubleshooting must be done with the machine basket empty 104 Troubleshooting at the Control 1 On the control board unplug the harness from header H5 Refer to Figure 25 TMB2396S Harness Figure 25 2 Insert ohm meter probes into pins and 2 of the harness If the metered value is infinite resistance open load OL proceed to step 3 If not proceed to Paragraph 105 3 Create a direct short between machine basket and moisture sensing baffle ground using test jumper Refer to Figure 26 If metered value is less than 1 ohm circuit is functioning properly double check machine configuration and cycle programming If 1 ohm or greater proceed to Paragraph 105 216 70422101R1 LED OPL and UniLinc Troubleshooting TMB2397S Test Jumber a D o c o 2 B 2 gt Figure 26 217 70422101R1 LED OPL and UniLinc Troubleshooting 105 Troubleshooting From Control to Slip Ring Assembly 1 At the control unplug harness at h
166. g leg adjustment TMB1885S 32 70422101R1 Troubleshooting 15 Tumble Dryer Runs But No Steam To Coils Steam Models Tumbler runs but no steam to coils Steam Models Check all valves in Are valves Yes supply and closed return lines make sure they No are open Remove trap Is steam trap Yes and clean blocked Replace if inoperative No Is solenoid valve Yes Check inoperative gt operation of solenoid valve No Check for inlet and Is check valve Yes outlet markings on incorrectly installed check valve and invert if necessary No Yes Remove strainer Is strainer clogged and clean No Test timer Test thermistor by removing harness from thermistor terminals Check latimerorihsnistor Yes resistance across terminals should read inoperative 70422101R1 approximately 50 000 Ohms at 77 F Resistance should decrease with a temperature increase Replace either if inoperative TMB1886S 33 Troubleshooting 16 Water In Steam Line Steam Models Water in steam line Steam Models Is steam piping installed incorrectly No Is trap functioning improperly 34 Yes Refer to Installation Yes gt Manual for steam requirements Check trap for size and capacity If trap is dirty or sluggish clean thoroughly or replace Check return li
167. ge at AFS COM If no backtrack circuit to transformer and correct as necessary Check thermistor for proper operation Replace if necessary Replace control if thermistor is good Correct wiring between FS 1 on the control and terminal 3 of the motor Check for proper operation of the fan motor switch Replace motor if necessary Correct wiring between cabinet limit and fan motor switch Check cabinet limit for proper operation Replace if necessary 7 Is there voltage to input No side of the stove limit ST 1 Yes 8 Is there voltage to the No output side of the stove limit Yes 9 Is there voltage to No terminal 4 on the ignition control Yes 10 Is there voltage to No terminal 2 on the ignition control Yes 11 Is there voltage on No terminal 6 of ignition control module Yes 12 Is there voltage across No the coil of the gas valve Yes Continued on next page Correct wiring between stove limit and cabinet limit Check stove limit for proper operation Replace if necessary Correct wiring between ignition control and stove limit Correct wiring between ignition control and lint door switch LDS Replace ignition control Correct wiring between ignition control and gas valve TMB23498 a 70422101R1 NetMaster Troubleshooting KT075 Models Only 62 CE Mo
168. he beginning of this section To enter press the Start lt gt keypad The display will show 8 HH where HH is the software version number To exit the Software Version Number Test press the Back lt keypad The control will return to the testing mode Loading Door Test This option tests the loading door switch To start test control must be in the Testing Mode Refer to How to Enter Testing Feature at the beginning of this section To enter press the Start lt 4 keypad The display will show daar UP when the loading door switch is open and door CL when the loading door switch is closed The loading door switch has to be closed or open for at least one second for the control to register the switch as closed or open To exit the Loading Door Test press the Back keypad The control will return to the testing mode Lint Door Test dl ink This option tests the lint door switch To start test control must be in the Testing Mode Refer to How to Enter Testing Feature at the beginning of this section To enter press the Start lt 4 keypad The display will show L wnt UP when the lint door switch is open col Fas L inELL when the lint door switch is closed The lint door switch has to be closed or open for at least one second for the control to register the switch as closed or open NOTE Loading door must be closed while testi
169. he electronic control from the PDA Is there a response of any kind from the electronic control Aim PDA Does the electronic Communication control display E OF sequence checks or C out Check the following Is IR communication disabled by manual programming Is the IR window on the control covered or blocked If needed change control board 166 Does the control closer and try again Check the following 15 the battery low on the Is the IR window covered or blocked on the control If needed replace the electronic control TMB2269S 70422101R1 Electronic Control Troubleshooting 84 Coins Ignored When Entered L and W Control Suffixes only 70422101R1 Gas and electric heat Single and three phase power voltage Start coin drop diagnostic tests for test procedures Exit diagnostic testing and reset control Prompting for vend price Does the display on the electronic control increment properly Is connector H5 on the Reconnect and run control firmly seated in diagnostic test its receptacle again Is the 3 pin connector Reconnect and run between coin drop and diagnostic test control connected again correctly Are wires exiting coin drop optical sensor Replace coin drop cracked or broken Replace coin drop If problem still exists then replace the electronic control NOTE Refer to Programming Manual TMB1794S
170. he machine for troubleshooting Failure to do so may damage the front end control Replace front end control AP2 TMB2378S 70422101R1 ISEE VOLTAGE OPTION DIAGRAMI Airflow Errors LED OPL and UniLinc Troubleshooting 1 FOR LINE VOLTAGE AND 1 1 OPL OUTPUT BOARD MOTOR CONNECTIONS 6 8 nep E Wo U wra 6 2 sen FOER E surely qus Fa RED SLU L 1282 n z mp mk LAT poor Es Shree pii a 2507 6 4 ER AP2 OPL FRONT END CONTROL T 7 1 Ri HE THERMISTOR KZ sype SENSOR 1 AC Dee D L H E REVERSING OPTION 5 n a yi4 Bu 0 2 Sensor 2AVAG RETURN x TOO yg jor 6 6 Le wn vat M H Shon mig 5 0 4 2 REVERSE imaa m ILE i Roc Neut 5 FORWARD lt lt 555 pur a DAMPER 9 lic
171. he manufacturer Indicates an open circuit in the thermistor Check thermistor Replace if inoperative Check wiring between control and thermistor Refer to wiring diagram for proper wiring Check control Replace if inoperative Indicates a short circuit in the thermistor Check thermistor Replace if inoperative Check wiring between control and thermistor Refer to wiring diagram for proper wiring Check control Replace if inoperative EC 19 Indicates no communication between Check card reader Replace if inoperative control and card reader Check wire harness connecting card reader Card Reader and control Replace if inoperative models only Check control Replace if inoperative 90 70422101R1 Section 7 NetMaster Troubleshooting KT075 Models Only Alans To reduce the risk of electric shock fire explosion serious injury or death Disconnect electric power to the tumbler before servicing Close gas shut off valve to gas tumbler before servicing Close steam valve to steam tumbler before servicing Never start the tumbler with any guards panels removed Whenever ground wires are removed during servicing these ground wires must be reconnected to ensure that the tumbler is properly grounded 70422101R1 91 NetMaster Troubleshooting KT075 Models Only 51 No Infrared Communication Gas and electric heat Single and three phase Attempt to power supply communicate with the electronic con
172. heck for proper operation of the K2 relay Replace if necessary Correct wiring between K2 relay and MCS Check MCS for proper operation Replace motor if necessary 7 Is there voltage to input No side of the cabinet limit CT Yes Is there voltage to the No output side of the CT Yes No there voltage to input of ST Yes 10 Is there voltage on output side of ST No Yes Continued on next page Correct wiring between stove limit and MCS Check CT for proper operation Replace if necessary Correct wiring between ST and CT Check function of ST Replace if necessary TMB2294S a 70422101R1 70422101R1 Continued from previous page 11 Is there line voltage across element contactor coils No Yes Do the contactors pull in No Yes Is there voltage No on the output side of the contactor Yes Is there voltage supplied to elements No Yes No 15 heat produced Yes Unit operational Electronic Control Troubleshooting 95 CE Models Will Not Heat Electric continued Correct wiring to contact coils Replace contactors Check for voltage to input side Correct wiring if necessary Replace contactor if voltage supplied to input side Correct wiring between elements and contactors Check element for open CK1 Replace if necessa
173. hermostat and replace if inoperative Open lint door panel Place lint door panel back on tumbler ensuring a tight fit Is lint door panel not closed properly Is there broken loose or incorrect wiring Refer to wiring diagram located inside contactor box TMB2324S b 70422101R1 7 Igniter Does Not Shut Off After Gas Ignition Gas Burner Igniter does not shut off after gas ignition gas burner Is tumbler not Tumbler is equipped for type of gas specified on Yes for serial plate at 0 2 000 yp i g feet altitude Refer to Installation Manual No Open partially Is there insufficient gas y closed gas shut off supply valve or correct low pp y gas pressure No Refer to Is burner flame Yes Adjustments adiusted Section for erly recommended burner flame adjustment No Check Is electrode assembly Yes assembly for incorrectly installed correct alignment No Test igniter Is igniter control Yes control and inoperative replace if inoperative No Refer to wiring Is wiring Yes diagram incorrect located inside 70422101R1 contactor box Troubleshooting TMB1878S 25 Troubleshooting 8 Heating Element or Burner Shuts Off Prematurely Heating element or burner shuts o prematurely
174. i TMB2290S 189 Electronic Control Troubleshooting CE Models No Start Run SEE VOLTAGE OPTION DIAGRAM 2 9 a 2 s 7 s GAS MODELS sei TMB2287S 190 70422101R1 94 CE Models Will Not Heat Gas Steam Note Voltage checks referenced to neutral unless otherwise stated Note Test conducted with unit running and calling for heat 1 No Is there voltage on H5 13 on the control Yes 2 N Is there voltage at H5 1 of the control Yes 3 Is there voltage at No terminal 14 of the K2 relay Yes 4 Is there voltage at No N O terminal of the K2 relay Yes 5 Is there voltage to the COM terminal of motor centrifical switch MCS No Yes 6 No Is there voltage to the output side of the MCS Yes 70422101R1 Check airflow switch AFS for proper operation If needed correct wiring between AFS and H5 13 Check thermistor for proper operation Replace if necessary Replace control if thermistor is good Correct wiring between H5 1 on the control and terminal 14 of K2 Check for proper operation of the K2 relay Replace if necessary Correct wiring between K2 rel
175. id Timer Control Troubleshooting 73 Control Has No Display QT and RQ Control Suffixes Gas steam and electric heat Single and three phase supply NO Connect supply voltage and run unit Check H6 1 and NO Replace hybrid H6 2 for 5 VDC Is there voltage supplied to the unit control assembly YES YES Note Reference voltage to 1 supply neutral Replace displa Is there voltage to the input side of the primary fuse s NO Correct wiring between primary fuse and supply assembly YES Is there voltage to the output side of the primary fuse s NO Replace primary fuse YES Is there voltage across the primary side of the transformer NO Correct wiring between transformer and primary fuse YES Is there voltage across NO 2 amp 3 of transformer Replace transformer secondary YES Is there voltage across Correct wiring 9 between hybrid timer terminals H1 3 amp H1 1 on hybrid timer and transformer secondary YES TMB2000S 70422101R1 141 Hybrid Timer Control Troubleshooting Control Has No Display QT and RQ Control Suffixes Qu 181 1 TBI N
176. if necessary TMB2277S a 70422101R1 Electronic Control Troubleshooting 90 Unit Will Not Heat Electric continued Continued from previous page Correct wiring between heater contactor and stove limit Is there voltage across the coil s of the heater contactor s Is there voltage to the Correct wiring input terminals of HC1 between HC1 HC2 and or HC2 and line voltage Check for proper operation of contactors Replace if necessary Is there voltage to the output side of HC1 HC2 contacts Check elements for shorts or opens Check wires between contactors and elements Do all elements produce heat glow a slight orange color Unit is operational TMB2277S b Please see following page for wiring diagram information 70422101R1 181 Electronic Control Troubleshooting Unit Will Not Heat Electric SEE VOLTAG OPTION DIAGRAM FOR LINE VOLTAG AND MOTOR CONNECTIONS BLK THERMISTOR TUMBLER CON CONTROL BOWER SUPPLY MOTOR RELAY 6 9 FORWARD MOTOR RELAY H5 2q TRANSFORMER 8 SECONDARY RE
177. ing through the tumbler A flame pattern that flares to the right and left indicates that no air is flowing through the tumbler Check make up air and exhaust vent Air inlet shutter adjustments will vary from location to location and will depend on the vent system number of units installed make up air and line gas pressure Opening the shutter increases the amount of air supplied to the burner while closing the shutter decreases the air supply Adjust air shutter as follows PROPER INSUFFICIENT NO AIRFLOW AIRFLOW AIRFLOW AIR SHUTTER AIR SHUTTER AIR SHUTTER ADJUSTING SCREWS ADJUSTING SCREWS ADJUSTING SCREWS TMB1780S Figure 11 70422101R1 63 Adjustments A _ To reduce the risk of electric shock fire explosion serious injury or death Disconnect electric power to the tumbler before servicing Close gas shut off valve to gas tumbler before servicing Close steam valve to steam tumbler before servicing Never start the tumbler with any guards panels removed Whenever ground wires are removed during servicing these ground wires must be reconnected to ensure that the tumbler is properly grounded 36 Airflow Switch The airflow switch is set at the factory for proper operation No adjustment necessary The airflow switch operation may be affected by shipping tape still in place lack of make up air or an obstruction in the exhaust duct These should be checked and the required correcti
178. is plugged in Correct wiring between supply terminals and fuse F1 TMB2288S 70422101R1 Electronic Control Troubleshooting CE Models No Display SEE VOLTAGE OPTION DIAGRAM GAS MODELS A H p STEAM_MODELS HI mt TMB2287S 70422101R1 185 Electronic Control Troubleshooting 92 CE Models Door Open Indicator Note All voltage checks are referenced to the transformer common unless otherwise stated Is there voltage across Yes terminals H5 7 and H5 3 on the control No Is there voltage at COM terminal of lint door switch LDS Yes No 3 Is there voltage at Yes N C terminal of LDS No there voltage at COM terminal of door switch DS Yes No 5 Is there Yes voltage at N C terminal of DS No 186 Replace control Correct wiring between loading door and control Make sure lint door is closed Check function of LDS Replace if necessary Correct wiring between DS and LDS Make sure door is closed Check function of DS Replace if necessary 6 Is there voltage on output side of F3 Yes Correct wiring between F3 and DS No the
179. iter and retest properly grounded TMB2395S 22 70422101R1 Troubleshooting 6 Heating Element Does Not Heat or Burner Does Not Ignite Heating element does not heat or burner does not ignite Is there improper or inadequate exhaust or ake up air Are there blown fuses or tripped circuit breakers Is drying timer not selected or inoperative Is No Heat selected on control Is control relay inoperative Yes Yes Yes Refer to Installation Manual for exhaust and make up air requirements Check fuses or circuit breakers Set drying timer or replace if necessary Select temperature option Test relay and replace if inoperative 70422101R1 Is thermistor Yes inoperative Electric Models Are heating elements or contactors inoperative Gas Models Is gas supply insufficient Yes Gas Models Are orifices incorrect Yes Test thermistor by removing harness from thermistor terminals Check resistance across terminals should read approximately 50 000 Ohms at 77 F Resistance should decrease with a temperature increase Replace thermistor if inoperative Check heat contactors and elements Replace if necessary Open partially closed gas shut off valve or correct low gas pressure Check inlet press
180. ithin 4 25 minutes the control will return to Idle Mode NOTE If power to the control is turned off before 10 Minute Test Cycle has ended the cycle will be cleared from control 238 Table 5 70422101R1 116 Diagnostic Testing Models with RU and UO Control Suffixes Diagnostic Menu Machine ID Diagnostic Menu TMB1325R Figure 30 The Diagnostic Menu contains Test Alarm and Machine ID Menus The menus contain specific diagnostic information and manufacturing data for the machine The and keypads position the highlighted box Press the select the menu choice Press the keypad while in the Diagnostic Menu to return to System Menu mex keypad to Test Menu Diagnostics Are Disabled Test Cycle Outputs Test Menu TMB1326R Figure 31 70422101R1 LED OPL and UniLinc Troubleshooting The Test Menu provides features for manufacturing and customer service testing The highlighted box is moved horizontally and vertically using the and keypads Press the keypad to select the menu choice Press the keypad to return to Diagnostic Menu The screen will display Diagnostics Are Disabled if the manual diagnostics have been programmed off Diagnostic test commands via PDA and network will still function START ENTER Test Cycle Menu The Test Cycle Menu is used to run several test steps as well as a ten minute cycle Step 01
181. l show 5L if sensed open for at Fas least 1 5 seconds and 5L LL if sensed closed for at least one second Stove High Limit Thermostat 2 Sic HH The display will show Sic UP if sensed open for at least 1 5 seconds and CL if sensed closed for at least one second 70422101R1 Dip Switch Status dd P The control will show the displays in Table 2 according to the DIP switch configuration The control will show which switches are in the ON position For example to verify that DS3 DS5 and DS7 are in the ON position the display will show d5C 084 DS3 4 DS5 16 and DS7 64 4 16 64 84 LED OPL and UniLinc Troubleshooting DS8 DS7 DS6 DS5 DS4 DS3 DS2 DS1 Display OFF OFF OFF OFF OFF OFF OFF OFF d50000 OFF OFF OFF OFF OFF OFF OFF ON OFF OFF OFF OFF OFF OFF ON OFF dsi iie OFF OFF OFF OFF OFF ON OFF OFF 95004 OFF OFF OFF OFF ON OFF OFF OFF dsc OFF OFF OFF ON OFF OFF OFF OFF 0500 IB OFF OFF ON OFF OFF OFF OFF OFF 95032 OFF ON OFF OFF OFF OFF OFF OFF d50064 ON OFF OFF OFF OFF OFF OFF OFF 128 Table 2 ICM Alarm Status fnAL This option shows the status of the ICM Ignition Control Module Alarm To start test control must be in the Testing Mode Refer to How to Enter Testing Feature at the beginning of this section To enter press the Start lt keypad The display will show
182. lace motor as required NOTE The following checks are AC voltage Yes checks and should be equal to the line voltage of the machine Refer to the serial plate of the machine for correct line voltage The machine s motor s may be single or three phase TMB2375S 70422101R1 201 LED OPL and UniLinc Troubleshooting No Drive Motor Rotation Drawing 1 of 2 NOTE The door and lint door must be closed for voltage to be present at the forward and reverse outputs ISEI DIAGRAMI p FOR LINE VOLTAGE AND 1 AP1 OPL OUTPUT BOARD m os MOTOR CONNECTIONS 1 I H6 B nep wr DOOR L TRANSFORMER i E Goan 6 2 d E qus Fey RED 2LU WES E Yr phy aen xt senak 2 OPL FRONT END CONTROL ron a a Ls nenu 1 2 ORMAR ERWISTOR BUH sensor 1 E i E i REVERSING OPTION 2 is anuo nn Bi 7 2 sensor dide acum wau yit B Reverse i
183. le pressing and holding the Down 4 keypad with one hand press the Back keypad with the other hand 3 When the control enters the Production Test 4 The control will advance through the sequence of test steps whenever any keypad is pressed with the exception of the Keypad Test Refer to Table 5 for all tests in the Production Test Cycle To Exit Production Test Cycle The test will be exited when the time reaches on the control in the 10 Minute Test Cycle Otherwise the control must be powered down to end the test Cycle it will first display 5 HH with the HH showing the software version of the control Production Test Cycle Quick Reference Table Display Test Mode Comments G HH Software Version HH is the software version number HHH Control Type 2 3 4 5 or 6 depending on brand PHg 7 Keypad Test When a key is pressed the control will display the number assigned to the keypad As each keypad is pressed the control will display the number assigned to it in the last digit of the display until the next key is pressed example if Key 1 is pressed the control will show PAd P When all keypads have been pressed the control will advance to next step after a one second delay door UP or Loading Door Test The control will display the status of the loading door doar GP if door door L L is open or doar CL if door is
184. lear possible coin jams Refer to Figure 1 Replace Tension Spring 1 Move tension spring downward until cover catch is free Refer to Figure 3 Tension Spring Bo E ca Cover Catch DRY2088N Coin Drop Cover Tension Spring MIX7B Figure 1 2 Manually hold down coin drop cover and insert coin Refer to Figure 2 Coin Drop Cover Figure 2 3 Ifcoin drop now operates properly replace tension spring using instructions on following pages 54 Figure 3 2 Open cover for coin drop 3 Place a small flathead screwdriver under right side of tension spring and lift up Refer to Figure 4 Small Flathead Screwdriver Right Side of iias Tension Spring Figure 4 4 Use screwdriver to move spring approximately 3 mn to left 5 Lift spring over left tab Refer to Figure 4 6 Rotate spring clockwise 40 to 60 degrees until it is free from right tabs Refer to Figure 5 Center Tab Figure 5 70422101R1 7 Use screwdriver to remove spring from center tab Refer to Figure 5 8 Lift spring with attached clip off drop 9 Remove clip from spring Refer to Figure 6 c 20 1 Clip MIX4B Figure 6 10 Attach clip to new tension spring Part No 209 00598 02 11 Place clip installed on spring in slot on coin
185. lectronic control 70422101R1 TMB23048 73 Micro Display Control MDC Troubleshooting 44 Control Has No Display Gas steam and electric heat 1 Single and three phase power supply Is there power supplied Plug unit in and to the unit start cycle Correct wiring Is there 120 VAC at input between primary of primary fuses fuse and power supply Is there 120 VAC at output side of the primary fuses Replace primary fuse s Correct wiring between primary fuse and transformer Is there 120 VAC across terminals 1 amp 2 of transformer primary Is there 24 VAC across terminals 1 amp 4 of transformer secondary Replace transformer 74 6 Correct wiring between secondary fuse and transformer Is there 24 VAC at the input of the secondary fuse Is there 24 VAC at output side of secondary fuse Replace secondary fuse Is there 24 VAC across H1 1 amp H1 3 on the control Replace Electronic Control Correct wiring between control and secondary fuse TMB249S 70422101R1 Micro Display Control MDC Troubleshooting Control Has No Display
186. ll Not Heat Gas TB1 lt u e 181 SERVICE N TBI N BLK CONNECTION LT BLU GROUND TERMINAL FUSE 2A T 250V Bs THERMISTOR RED BLU n o o H4 NETMASTER CONTROL 8252521 R g VOLTAGE CONFIGURATION INPUT TEMP REGULATING Tom 2 JUMPER H2 2 TO H2 5 AS FOLLOWS CONTROL CIRCUIT CONTROLS 3 WIRE JUMPER POWER HEAT RELAY SECONDARY 120Vac 6 8K ohm 5 watt SUPPLY CHASSIS GROUND FUSE 240Vac 13 6K onm 10 watt i 25 7 DOOR SENSING CIRCUIT ALLOWS amp 2 3 250v 8 CONTROL TO TURN ON MOTOR wr s RELAY ONLY WHEN DOOR IS Door Sense Ret CLOSED amp SWITCH IS PRESSED H2 na w i RED BLU WHT RED SECONDARY FUSE 3 54 T START PULSE INPUT H7 1 amp 7 250V 11 lin 9 30ma HN 7 HEAT RELAY TIME 45msec MIN 1 8 ig z m AVAILABLE OUTPUT T F H7 3 amp H7 4 DOOR i s MACHINE RUNNING I i SWITCH Nmax 28Vde REH B Sn wer L DROPS 4 NETWORK AND CARDREADER SCI HS H6 SER 1111123139772
187. ls and line of HC1 voltage Is there voltage to the T1 T2 and T3 terminals of HC2 Correct wiring between HC2 and line voltage Check for proper operation of contactors replace them if necessary Is there voltage across L3 amp L1 L1 amp L2 and L2 amp L3 TMB2318S b Please see following page for wiring diagram information 162 70422101R1 Hybrid Timer Control Troubleshooting Unit Will Not Heat Electric QT and RQ Control Suffixes PDB PDB L1 SERVICE 9 PDB N CONNECTION GROUND TERMINAL M 77 u Mic Be S x a Lt L19 9 R LT BLU x seo FEOF F u T2 L2 c 24 WHT T2 a k 9 sik 6 a i BLU hd PRIMARY 7 FUSE 2 T 250V g TITTTT cH REGULATING 1 QT RQ CONTROL 12 5 HEAT RELAY CONTROL POWER W SUPPLY 4 9 MOTOR RELAY W IF 4 REVERSING FOR ID MOTOR RELAY MODELS 6 ONLY g REVERSE MOTOR RELAY 4 w WHT DAMPER MOTOR SECONDARY e ce
188. moved 3 Repeat steps 1 2 as necessary 4 Thoroughly wipe the entire cylinder after cleaning to insure the cleaner has been removed 56 Stainless Steel Cylinders For stainless steel cylinders use a heavy duty powder cleanser such as Zud and a cleaning pad such as Scotch Brite to clean the inside of the cylinder 1 Using a water spray bottle wet the cylinder and cylinder back 2 Sprinkle cleanser onto the pad and scrub the discolored areas 3 Repeat steps 1 2 as necessary 4 Thoroughly wipe the entire cylinder after cleaning to insure the cleanser has been removed 70422101R1 Section 4 Fire Supression System Troubleshooting cam _ To reduce the risk of electric shock fire explosion serious injury or death Disconnect electric power to the tumble dryer before servicing Close gas shut off valve to gas tumble dryer before servicing Close steam valve to steam tumble dryer before servicing Never start the tumble dryer with any guards panels removed Whenever ground wires are removed during servicing these ground wires must be reconnected to ensure that the tumble dryer is properly grounded W002R1 A water discharge or system fault is indicated when the fire suppression system control box light is on 70422101R1 IMPORTANT When handling electronic controls use a ground wrist strap Due to the sensitivity of electronic controls careful handling is required Wrist s
189. ne damage will occur if the procedure is not followed NOTE The word NOTE is used to communicate installation operation maintenance or servicing information that is important but not hazard related 70422101R1 In the interest of safety some general precautions relating to the operation of this machine follow AL wanns Failure to install maintain and or operate this product according to the manufacturer s instructions may result in conditions which can produce serious injury death and or property damage Do not repair or replace any part of the product or attempt any servicing unless specifically recommended or published in this Service Manual and unless you understand and have the skills to carry out the servicing Whenever ground wires are removed during servicing these ground wires must be reconnected to ensure that the product is properly grounded and to reduce the risk of fire electric shock serious injury or death WO006R2 Safety Information IMPORTANT INFORMATION During the lifetime of a tumbler it may require service The information contained in this manual was written and is intended for use by qualified service technicians who are familiar with the safety procedures required in the repair of a tumbler and who are equipped with the proper tools and testing equipment A warns _ To reduce the risk of electric shock fire explosion serious injury or death Disconnect electric pow
190. ne for high back pressure 18875 70422101R1 Troubleshooting 17 Door Open Light and Display Flash With Door Closed Door open light and display flash with door closed Is door switch Yes Replace door faulty switch No Is lint panel Yes Replace lint switch faulty panel switch No Check service connections to terminal block in junction box For 120 or 240 Volt tumblers neutral wire must be connected to terminal marked NEUT On single phase tumblers hot wire must be connected to terminal marked L1 A ground wire must be secured to the ground screw in the junction box Is electrical service connected incorrectly TMB2265S 70422101R1 35 Troubleshooting 18 Display Shows SH and Signals Sounds Display shows SH and signals sounds Is thermistor over 200 F 93 C for models with OM RM control suffixes or 209 4 F 98 C for models with KB KC KW KX KY KZ LB Allow tumbler to cool and press ON SELECT pad If display still shows LC LW LX LY LZ WB WC SH replace WW WX WY WZ thermistor control suffixes Has thermistor Yes or harness thermistor shorted 36 TMB2408S 70422101R1 Troubleshooting 19 Display Shows OP and Signal Sounds Three Minutes After Tumble Dryer is Started Display shows OP
191. ner flame for gas heating element for electric and coil for steam 2 The heated air moves into the cylinder where it is circulated through the wet load by the tumbling action of the cylinder The air then passes through the lint filter exhaust fan and is vented to the outdoors 12 Theory of Operation of Instant Electronic Ignition IMPORTANT The Non CE Marked Instant Electronic Ignition system will attempt to light the gas by sparking for approximately 15 seconds If gas ignition does not take place within approximately 15 seconds the Instant Electronic Ignition control will go into safety lockout and the valve will no longer open until Instant Electronic Ignition control is reset To reset Instant Electronic Ignition control remove power from control by opening and closing the tumble dryer door If condition persists check that the gas shut off valve is in on position and that the gas service is properly connected If condition persists 1 Check resistance of high tension lead approximately 1000 ohms inch and replace if not within resistance range 2 Check voltage present at valve 3 Check that machine is properly grounded 4 Check the gap between igniter and burner tube gap should be 1 4 3 8 inch 5 Check that burner ports are not blocked or plugged under the igniter 70422101R1 Introduction Fire Suppression System Theory of IMPORTANT For safety purposes do not operate Operati on tumbl
192. ng lint door To exit the Lint Door Test press the Back keypad The control will return to the testing mode 232 Heater Interlock Test dHEAE While this test 1s running the control will show the status of the following inputs for two seconds each The control will continue scrolling through the input status displays until the test is aborted To start test the control must be in the Testing Mode Refer to How to Enter Testing Feature at the beginning of this section To enter press Start gt Refer to five sections below for more details on individual statuses NOTE These switches are tested in sequence If one switch is sensed open the rest will be open as well For example if the fan motor contactor switch is open all of the switches will be open To exit the test press the Back keypad The control will return to the testing mode Fan Motor Contactor Switch FLU nHH The display will show FL 7 if the switch is sensed open and FLUnLL if the switch is sensed closed Fan Motor Centrifugal Switch Fat SHH The display will show Fal 50 if the switch is sensed open and SCL if the switch is sensed closed Cabinet High Limit Thermostat CAb HH er The display will show UP if sensed open for at least 1 5 seconds and CL if sensed closed for at least one second Stove High Limit Thermostat 1 51 HH The display wil
193. ning and calling for heat to transformer neutral Heat Gas there Correct wiring voltage to between motor terminal 3 and motor centrifical switch Is the thermistor operational Replace Replace thermistor control Is there Yes voltage at H2 5 of control centrifical switch Check motor for proper operation Replace if necessary Is there voltage at terminal 5 of the fan motor Is there voltage to the common of the Correct wiring between airflow irf switch and idi cabinet limit switch h iam h Correct wiring A tage to the between cabinet ed E limit and terminal cabinet limit 5 of fan motor Is there Check for proper voltage to the N O terminal of the airflow switch operation of airflow switch Replace if necessary Is there Check cabinet voltage to the limit for proper output of the operation cabinet Replace limit if necessary Is there Correct harness voltage at BRN between airflow wire on motor switch and contactor contactor is there Correct wiring voltage to the input of the limit and normally stove limit open terminal of the airflow switch there voltage on ORG WHT Replace wire on motor contactor contactor
194. nly and cannot be navigated Press the keypad to return to display to Diagnostic Menu or the Run Diagnostic Menu Machine ID Menu Model UT030NUOG2K0W01 Serial 1107002759 Install Date 07 01 2011 Machine Type 30 Control SN 11410113 Front End SW Display SW Node Number Machine ID TMB1332R ALARM COUNTS Fan Motor Contactor Fan Motor Centrifugal Sw ICM Lockout Alarm Heat Rotation Moisture Sensor IR Network Alarms 3 of 3 TMB1363R Figure 28 70422101R1 Figure 29 The Machine ID Menu provides several different types of manufacturing and machine information that can be useful to the user and technician The Machine ID Menu cannot be navigated Pressing the keypad will return to Diagnostic Menu or the Run Diagnostic Menu 241
195. nostic test press the Start lt gt 4 keypad To exit press the Back keypad Heater Interlock Test Y dd iP DIP Switch Status Y d ICM Alarm Status Y FEUnHH Fan Motor Contactor Status Y Fal SHH Fan Motor Centrifugal Switch Status Y d Lnr5 ICM Reset Test LRb HH Cabinet High Limit Thermostat Status External Alarm Test 5L HH Stove High Limit Thermostat 1 Status Y Y ddrYon Dryer On Temperature Test GLE HH Stove High Limit Thermostat 2 Status Y Thermistor Temperature Test Y dL anF P Machine Config 2 Display Y dL anF 3 Machine Config 3 Display Y dAFS Airflow Switch Test Y dFFin Fan Motor Test Y ddAnPr Damper Motor Test Y dr EUSE Reverse Motor Test y drot RE Rotation Sensor Test y dent P Moisture Sensor Test Shorted Y dent 2 Moisture Sensor Test Resistance TMB1374R 231 LED OPL and UniLinc Troubleshooting Diagnostic Test Descriptions Control Software Version Number Test gSgF E This option displays the control software version number To start test control must be in the Testing Mode Refer to How to Enter Testing Feature at t
196. o H2 7 of micro control Is there voltage across the coil of the M contactor Is there voltage to L1 L2 and L3 of the M contactor If actuated replace inoperative Switch If not actuated adjust Switch as needed Correct wiring between micro control and door switch Replace micro control Correct the wiring to the M contactor Correct wiring between M contactor and supply voltage Continued on next page TMB18978 a Troubleshooting 27 OM Control No Fan Motor Rotation With Cycle Selected and Start Pressed continued Continued from previous page Is there voltage to T1 T2 and T3 of the M contactor Yes Is there voltage across L1 L2 and L3 of the motor Yes Replace M contactor 50 Correct wiring between motor and M contactor Unit operational TMB1897S b 70422101R1 Troubleshooting 28 OM Reversing Control No Cylinder Rotation or Reversing Capabilities 208 240 Volt 60 Hertz 3 Phase and 480 Volt 60 Hertz 3 Phase Electric Models 208 240 Volt 60 Hertz 3 Phase and 460 480 Volt 60 Hertz 3 Phase Gas and Steam Models OM Reversing Models No cylinder rotation or reversing capabilities Is there voltage across the primary of the transformer Is there voltage across terminals 2 am
197. o control there voltage to terminal 13 of the motor relay NO Replace motor relay Is there voltage at white brown fan motor centrifugal switch Correct wiring between relay and motor switch there voltage at brown white fan motor centrifugal switch Replace motor Yes Continued on next page 45 Troubleshooting 25 Electric OM Control No Heat With Cycle Selected Unit Running and Calling For Heat continued Continued from previous page there voltage to cabinet limit violet wire Is there voltage out of cabinet limit violet wire Is there voltage to the input of the stove limit Is there voltage to the output of the stove limit Is there voltage across coil of HC1 Yes Is there voltage to Correct wiring between fan motor centrifugal switch and cabinet limit thermostat Replace thermostat Correct wiring between stove limit and airflow switch Check for proper airflow Replace stove limit if necessary Correct wiring to HC1 46 terminals T1 T2 and T3 of HC1 Is there voltage to terminals L1 L2 and L3 of HC1 Is there voltage across the elements Do the elements produce heat NOTE If elemen
198. ol NOTE Refer to Programming Manual TMB1794S 93 NetMaster Troubleshooting KT075 Models Only 53 No Display Is there 24 volts AC across terminals H1 1 and H1 3 on control No Is the secondary fuse good Yes 3 Is there 24 volts AC across terminals 1 and 4 on the secondary side of the transformer Is line voltage present across terminals 1 and 2 on the primary side of the transformer 5 Is the primary fuse good Yes Correct wiring from terminal block to transformer Verify that the unit is connected to power and the power is on 94 Replace the electronic control Replace the fuse Correct the wiring between the transformer secondary and the electronic control Replace the transformer Replace the primary fuse TMB1795S 70422101R1 NetMaster Troubleshooting KT075 Models Only No Display TB1 amp SERVICE N CONNECTION P E GROUND TERMINAL 70422101R1 TB1 L1 d Fi 3 PRIMARY FUSE 2A T 250V a d E 5 a 5 ue 2 M THERMISTOR RED BLU 89 NETMASTER CONTROL m
199. oltage to the output side of HC1 HC2 contacts Check elements for Do all elements shorts or opens produce heat glow a Check wires slight orange color between contactors and elements Unit is operational TMB2335S b Please see following page for wiring diagram information 106 70422101R1 NetMaster Troubleshooting KT075 Models Only Unit Will Not Heat Electric PDB 1 1 lt 4 eP08 Li SERVICE TBI N 5 i PDB N CONNECTION 5 880 x 3 n 5 4 5 PRIMARY 7 B 2 FUSE Be 2 lt V THERMISTOR RED BLU 2 NETMASTER CONTROL z gars TRANSFORMER 8 VOLTAGE CONFIGURATION INPUT TEMP REGULATING 2 5 JUMPER H2 2 TO H2 5 AS FOLLOWS CONTROL CIRCUIT CONTROLS 24Voc WIRE JUMPER POWER t HEAT RELAY SECONDARY 120Vac 6 8K ohm 5 watt SUPPLY CHASSIS GROUND FUSE 240Voc 13 6K ohm 10 watt b 2 125 T DOOR SENSING CIRCUIT ALLOWS Els a 250V 8 CONTROL TO TURN ON MOTOR WHT RELAY ONLY WHEN DOOR 15 Door Sense CLOSED amp SWITCH IS PRESSED H2 2 8 w RED BLU 27 4 4 MOTOR RELAY
200. otor and N O of airflow control relay Switch Yes 6 No Is there voltage at terminal 14 of the motor control relay Replace motor control relay Yes 70422101R1 NetMaster Troubleshooting KT075 Models Only 7 No Correct wiring Is there voltage to between motor terminal 3 of the fan motor centrifugal switch terminal 3 and motor relay Yes 8 Is there voltage at Check motor for terminal 5 of the fan proper operation motor centrifugal Replace if switch necessary Correct wiring between cabinet limit and terminal 5 of fan motor Is there voltage to the input of the cabinet limit Check cabinet limit for proper operation Replace if necessary Is there voltage to the output of the cabinet limit Is there voltage across the coil of the steam valve Correct wiring between steam valve and cabinet limit thermostat Check steam valve for proper operation Replace if necessary Does steam valve open Verify that the correct steam is supplied to unit Verify that steam valve and other items were installed according to the Installation Manual TMB2312S 103 NetMaster Troubleshooting KT075 Models Only Unit Will Not Heat Steam 1 11 v e 181 0 SERVICE N e TBI N CONNECTION x 3 GROUND n E 5 TERMINAL FUSE 2A T 250 a d 3 5 964 u M
201. p 3 of the transformer secondary Is there voltage to the COM of the door switch s there voltage to the N O terminal of the door switch Correct wiring between transformer and supply voltage Check fuses Replace transformer Correct wiring to door switch Check fuses Correct wiring and check fuses 70422101R1 Is there voltage into lint panel Switch Is there voltage out of lint panel Switch Is there voltage to H2 8 terminal step for forward rotation or next rotation Forward Rotation Is there voltage to H2 3 of icro control of micro control Continue to next page for reverse Correct wiring 9 between door switch and lint panel switch If actuated replace No inoperative switch If not actuated adjust switch as needed Correct wiring between micro control and door switch Make sure unit is in the NO forward portion of rotation Replace micro control Continued on next page TMB2328S a Troubleshooting 28 OM Reversing Control No Cylinder Rotation or Reversing Capabilities continued Continued from previous page s there voltage across the coil of the forward relay Correct the wiring to the relay there voltage to terminals L1 L2 and L3 of
202. perty damage resulting from improper service Review all service information before beginning repairs Warranty service must be performed by an authorized technician using authorized factory parts If service is required after the warranty expires manufacturer also recommends contacting an authorized technician and using authorized factory parts Safety Warnings and Decals SAFETY WARNINGS and decals have been provided in key locations to remind you of important precautions for the safe operation and maintenance of your tumbler Please take the time to review these warnings before proceeding with service work All decals have been designed and applied to withstand washing and cleaning Decals should be checked periodically to be sure they have not been damaged removed or painted 70422101R1 Safety Information Safety Precautions for Servicing Tumblers Prior to servicing tumbler e Disconnect electrical service and lockout to prevent unintentional connection e Shut off supply gas valve e Allow machine to cool prior to servicing After servicing tumbler e Control access panels must be reinstalled e Motor drive belt guards must be reinstalled Contactor junction accessory box covers must be reinstalled Use a non corrosive leak detection solution to check all pipe connections for gas leaks DO NOT USE AN OPEN FLAME TO CHECK FOR GAS LEAKS e The loading door switch lint door switch and airflow
203. ply Yes Replace motor control relay 70422101R1 voltage at black wire and It blue wire on the there supply motor control relay there supply voltage at black and It blue wires on the other side of the motor control Is there supply voltage across terminals 1 amp 4 of the motor Motor is operational Is there supply voltage between L1 L2 L2 L3 and L1 L3 of motor Replace motor No Correct wiring between black wire or It blue neutral and power supply No Replace motor control relay Correct wiring between motor and motor control relay Correct wiring between motor and motor contactor TMB23528 127 On Premise Micro Control OM Troubleshooting Motor Will Not Start Run Single Phase TB1 181 1 SERVICE N T TBI N CONNECTION 3 PRIMARY TERMINAL FUSE 2A T k 250v g ij SECONDARY kai FUSE SECONDARY MODELS RM MODELS 35A T FUSE 250v 1 25A T 8 250V J RED BLU THERMISTOR THERMISTOR I5 sts B sh e s Le 2 12 3 8 4 5 9 1 1 7 10 cHsss GROUND 55
204. power into cabinet high limit thermostat Yes Is there power out of cabinet high limit thermostat Yes Check for loose or burned connection at harness plugs Replace airflow Switch Troubleshooting Check for broken wire from motor switch Replace thermostat TMB2268S b 39 Troubleshooting 21 No Main Burner Flame Igniter Does Not Spark No main burner flame igniter does not spark Is resistance of Is IEI high voltage lead I5 igniter gap Is igniter No control in No greater than No e alae us sparking safety 25 000 Ohms or lockout less than 5 000 cracked Ohms Yes Yes Yes No Non CE and Yes non Australian models Open and close door Beda CE and Australian models Replace high ie Replace Press and hold reset button voltage lead igniter IEI control until light goes out on the button Is green wire from IEI Connect green control wire to ground Is there 24 volts connected to terminal present on ground white black wire terminal from IEI control Yes No Is gas Check gas shut off Open gas shut valve coils Replace IEI valve off valve Replace as control open required TMB2326S 40 70422101R1 Troubleshooting 22 Steam OM Control No Heat With Cycle Selected Unit Running and
205. r harness Yes 15 contactor No energizing Replace contactor Yes No Check incoming Is there line voltage on the line side of the contactor power and wiring Replace or repair as required NOTE The following checks are AC voltage checks and should be equal to the line voltage of the machine Refer to the serial plate of the machine for correct line voltage The machine s motor s may be single or three phase Yes 198 Check Transformer and Fuse F3 NOTE The following checks are DC voltage checks CAUTION Always power down the machine PRIOR to disconnecting or connecting the H3 harness Once harness is disconnected you can power up the machine for troubleshooting Failure to do so may damage the front end control 3 Is there 5 volts DC at H3 1 to H3 11 with contactor commanded to close and 0 volts DC with contactor not commanded No Check control harness H3 and front end control AP2 Replace as required NOTE The H3 harness will need to remain connected during this test Yes Check control harness H3 and I O board API Replace or repair as required Is there line voltage No on the motor side Replace contactor of the contactor Yes No Is there line voltage at the motor Repair or replace wiring harness Yes Replace contactor TMB2374S 70422101R1 LED OPL and UniLinc Troubleshooting No Fan Motor Rotation Drawing 1 of 2
206. re 15 thumb pressure approximately 5 pounds at a a Remove guard from rear of tumbler point midway between sheave and motor pulley b To adjust cylinder belt tension loosen idler housing bolts holding idler housing assembly to the housing support c Position housing assembly by turning adjusting bolt until proper belt tension is reached then retighten idler housing bolts Reversing Belt Drive Models Proper tension is when each cylinder belt can be depressed approximately 3 16 inch 4 77 mm by applying light thumb pressure approximately 5 pounds at a point midway between the sheave and the idler Nonreversing Models NOTE Adjust cylinder belt tension first then Refer to Figure 14 adjust motor to idler belt tension Refer to Figure a Remove guard from rear of tumbler 15 b Loosen idler housing capscrews holding idler d Loosen the locking bolt housing to the housing support e Loosen the adjusting nut and use the adjusting c Position housing assembly by turning screw to move the motor up or down adjusting bolt unt il belt tension is f Once proper belt tension is reached retighten reached then retighten idler housing the adjusting nut and locking bolt capscrews ao Reparar omie otib g Replace the guard on rear of tumbler 66 70422101R1 NONREVERSING cosy UM mma Poly V Belt Self adjusting Idler Housing Bolts 2 Adjusting Drive V Belt Guide Rails
207. re voltage to input side of F3 Yes Replace fuse No 8 Is there voltage on the secondary side of transformer Yes Correct wiring between fuse and transformer No Is there voltage supplied to the Replace primary of the transformer transformer Verify primary fuses are good Replace if necessary Check and correct wiring between power terminal block and transformer Verify machine has supply voltage TMB2289S 70422101R1 Electronic Control Troubleshooting CE Models Door Open Indicator SEE VOLTAGE OPTION DIAGRA mai ue STEAM_MODELS TT hr 7 tj ICM x s z 8 c 3 s 4 X GAS MODELS lade 22875 70422101R1 187 Electronic Control Troubleshooting 93 CE Models No Start Run Note Voltage checks Note Common can be referenced to neutral or live wire transformer depending on voltage neutral unless and phase otherwise stated Yes Check operation of motor Replace if necessary there line voltage supplied to the motor No there voltage on the output side of the motor relay terminals Check to common line Yes Correct wiring between motor relay and motor No there volt
208. rner thermostats limit with Ohm Is there lint thermostat meter and Remove lint accumulation inoperative replace if open TMB1883S 30 70422101R1 13 Burners Not Burning Properly Gas Models Burners not burning properly Gas Models Are burner air shutters incorrectly adjusted Yes No Is there dirt Yes Refer to Adjustments Section for proper flame adjustment in burners No Is gas pressure too Yes high or too low No Yes Are orifices incorrect No Is make up air Yes inadequate No Yes Is exhaust duct restricted or blocked 70422101R1 Disassemble burners and blow out the dirt Check serial plate on back of the tumbler for correct gas pressure Tumbler is equipped for type of gas specified on serial plate at 0 2 000 feet altitude Refer to Installation Manual Refer to Installation Manual for proper make up air requirements Disassemble and clean exhaust system Troubleshooting TMB18848 31 Troubleshooting 14 Loading Door Opens During Operation Loading door opens during operation Refer to Is door strike No Adjustments improperly Section for adjusted door strike adjustment Refer to Is tumbler Yes Installation improperly Manual for leveled levelin
209. roubleshooting No there voltage to terminal 3 of the fan motor Yes 8 Is there voltage at terminal 5 of the fan motor No Yes 9 Is there voltage to the No input of the cabinet limit Yes 10 Is there voltage to the No output of the cabinet limit Yes 11 Is there voltage to the input of the stove limit Yes 12 Is there voltage to the No output side of the stove limit Yes Continued on next page KT075 Models Only Correct wiring between motor terminal 3 and motor relay Check motor for proper operation Replace if necessary Correct wiring between cabinet limit and terminal 5 of fan motor Check cabinet limit for proper operation Replace if necessary Correct wiring between stove limit and normally open terminal of the airflow switch Check operation of stove limit Replace if necessary TMB2335S a 105 NetMaster Troubleshooting KT075 Models Only 58 Unit Will Not Heat Electric continued Continued from previous page Correct wiring between heater contactor and stove limit Is there voltage across the coil s of the heater contactor s Is there voltage to the Correct wiring input terminals of HC1 between HC1 HC2 and or HC2 and line voltage Check for proper operation of contactors Replace if necessary Is there v
210. ry TMB2294S b 195 Electronic Control Troubleshooting 196 SEE VOLTAGE OPTION DIAGRAM CE Models Will Not Heat Electric TMB2293S 70422101R1 Section 11 LED OPL and UniLinc Troubleshooting Models with EO RE RU and UO Control Suffixes _ To reduce the risk of electric shock fire explosion serious injury or death Disconnect electric power to the tumble dryer before servicing Close gas shut off valve to gas tumble dryer before servicing Close steam valve to steam tumble dryer before servicing Never start the tumble dryer with any guards panels removed Whenever ground wires are removed during servicing these ground wires must be reconnected to ensure that the tumble dryer is properly grounded WO002R1 NOTE The UniLinc s Inputs and Outputs Menu can be used to check the current status of inputs as well as control the state of any output Both UniLinc and LED OPL Controls contain a comprehensive test cycle that can be used to verify machine configuration and functionality Diagnostic LEDs Before troubleshooting the following errors verify that the front end control is trying to turn the output on by checking for the corresponding red diagnostic LED on the Input Output I O Board Diagnostic LEDs can be found for the following outputs
211. s injury or death Disconnect electric power to the tumble dryer before servicing Close gas shut off valve to gas tumble dryer before servicing Close steam valve to steam tumble dryer before servicing Never start the tumble dryer with any guards panels removed Whenever ground wires are removed during servicing these ground wires must be reconnected to ensure that the tumble dryer is properly grounded WO002R1 Ignition Control Module Function There are four components to the ignition system the module the spark igniter the high voltage cable and ground wire When 24 VAC is applied between the TH and GND terminals on the module the module will send the high voltage signal to the igniter and 24 VAC to the gas valve coils Gas will hit the sparking igniter and flame will be established The igniter being engulfed in flame will create a millivolt electric signal that is sent back to the module by the high voltage cable this is what the module sees as flame recognition If the millivolt signal is not at the module in ten seconds the module will go into safety lockout The voltage will be cut from the igniter and gas valve coils and will not be restored until voltage is cycled at the module Intermittent Heat Test Procedure On ignition control modules with date codes higher than 08t2 perform the following test Start the tumble dryer and run for 10 minutes verify that the tumble dryer is heating properly After the
212. s there input of fan Is there voltage out from the fan Is there voltage to the input of the cabinet limit Is there voltage to the output of the motor relay voltage to the motor switch motor switch Correct wiring between motor relay and micro control Replace motor relay Correct wiring to fan motor Switch Replace fan motor Correct wiring between cabinet limit and CR1 Continued on next page TMB23278 a 47 Troubleshooting 26 Gas OM Control No Heat With Cycle Selected Unit Running and Calling For Heat continued Continued from previous page Check for proper gap on igniter and check for proper resistance of ignition cable Does the igniter spark Replace if Is there necessary voltage to the Replace output of the cabinet limit cabinet limit Is there voltage at Replace terminal 1 of ignition the ignition control Is there control Correct wiring between stove limit and airflow switch voltage to the input of the stove limit Is there voltage Correct wiring across the to gas valve Is there Check for proper gas valve voltage to the airflow Replace output of the stove limit if stove limit necessary Check for gas flow
213. t Continued on next page 70422101R1 All voltage checks are referenced to transformer neutral Correct wiring between motor terminal 3 and motor centrifical switch Check motor for proper operation Replace if necessary Correct wiring between cabinet limit and terminal 5 of fan motor Check cabinet limit for proper operation Replace if necessary Correct wiring between stove limit and normally open terminal of the airflow switch TMB2342S a 135 On Premise Micro Control OM Troubleshooting 70 Unit Will Not Heat Electric continued Continued from previous page Is there supply voltage to the T1 T2 T2 T3 and T1 T3 terminals of HC1 Is there supply voltage to the T 1 T2 T2 T3 and T1 T3 terminals of HC2 Correct wiring between HC1 and line voltage Correct wiring between HC2 and line voltage Do all elements produce heat glow a slight orange color Unit operational Check for proper Is there Check operation operation of ANE voltage across L1 L2 contactors voltage to the of stove limit a output side of the Replace if i replace them if stove limit necessary necessary Check elements for shorts or opens Check wires between contactors
214. t wiring from terminal block to transformer Verify that unit is connected to power and the power is on TMB2401S 70422101R1 Electronic Control Troubleshooting Open Door Indicator OPTION DIAGRAM ECTIONS es i TEMP REGULATIN TUMBLER CONTROL CIRCUIT CONTROLS H7 gu EAT RELAY SUPPLY 4 w FAN MOTOR RELAY 4 Ww 15 6 d FORWARD MOTOR RELAY rs 2 d 4 w ii H5 5 g SECONDARY REVERSE MOTOR RELAY W FUSE 4 Le 1 25 T HEAT RELAY Hs 9 M S 250V DOOR SENSING CIRCUIT ALLOWS nen Ad CONTROL TO TURN ON MOTOR PETA RELAY ONLY WHEN DOOR IS CLOSED amp SWITCH IS PRESSED H5 12 85 15 AIR FLOW SWITCH MONITOR H5 11g FOR AFS PROVING CIRCUIT START PULSE INPUT 4 1 amp H4 2 lin 3 30ma AVAILABLE OUTPUT L TME 20msec H4 3 amp H4 4 OFF WHEN MACHINE RUNNING m Vmax 2B8Vdc H imaxe NETWORK AND COIN DROPS CARDREADER SCI AIR FLOW i SWITCH SEE VEND ORG BRN miT oRe 6 APPLICATION DETAIL COM 9 NOTE FOR
215. tack Tumble Dryer 20 130 Pound Stack Tumble Dryer Lower Pocket 2 30Pound Stack Tumble Dryer Upper Pocket 22 35 Pound Tumble Dryer 23 45 Pound Stack Tumble Dryer 24 45 Pound Stack Tumble Dryer Lower Pocket 25 45 Pound Stack Tumble Dryer Upper Pocket 26 50 Pound Tumble Dryer 27 55 Pound Tumble Dryer 28 75 F75 Pound Tumble Dryer 29 120 Pound Tumble Dryer 30 170 Pound Tumble Dryer 31 1200 Pound Tumble Dryer Table 4 70422101R1 LED OPL and UniLinc Troubleshooting Airflow Switch Test dAFS This option shows the current state of the airflow switch To start test control must be in the Testing Mode Refer to How to Enter Testing Feature at the beginning of this section To enter press the Start lt gt keypad The display will show UP or HF CL with AF being open and AF LL being closed Switch has to be closed for at least one second or open for at least one second for a valid change To exit Airflow Switch Test press the Back keypad The control will return to the testing mode Fan Motor Test dFAn This option shows the fan motor running To start test control must be in the Testing Mode Refer to How to Enter Testing Feature at the beginning of this section To enter press the Start lt 4 keypad The display will show to indicate the fan motor is going to run
216. tage is present but lower than 24 volts AC ensure the correct transformer configuration jumper is installed Yes Replace Board AP1 Is there 24 volts AC at H2 6 to H6 9 Check harness and wire connections at Is there 24 volts AC at H2 4 to H6 9 with fan motor running the motor contactor Repair or replace as required NOTE The following checks are DC voltage checks 5 volts DC at H3 8 to H3 11 with motor contactor not engaged and 0 volts DC with motor contactor engaged Replace front end control AP 2 CAUTION Always power down the machine PRIOR to disconnecting or connecting the H3 harness Once disconnected you can power up the machine for troubleshooting Failure to do so may damage the front end control Check control harness H3 and I O Board Replace as required 23825 70422101R1 LED OPL and UniLinc Troubleshooting Fan Motor Contactor Error
217. tem o d I a control 24 VAC iui connections between to iuncti H1 7 and H1 1 box Yes Is fuse F1 on fire Yes suppression system Replace fuse j Retest fuse control blown No Is voltage to light Yes 2 VDC between Replace light n Retest H2 1 and H2 2 No Replace fire ue suppression system h Retest control board t control board TMB2198N 60 70422101R1 Fire Supression System Troubleshooting 34 Tumble Dryer Operates but Water Does Not Discharge and Light Is On Verify water is Make corrections to peser L meet water Suppression ___ Retest and flow rate Refer system requirements of y to Installation control system section i Yes Turn off tumble dryer ves Clean inlet 18 Are water inlet screens then i 5 Retest screens clogged turn on water system control Noy Reset fire suppression system control Retest Using an AC voltmeter within 90 Yes Disconnect Does water No seconds is there gt hose from Replace water voltage to the water water valve Ret
218. tered value is infinite resistance open load OL proceed to Step 5 If not remove machine basket and proceed to Paragraph 108 5 Create a direct short between basket and moisture sensing baffle Refer to Figure 26 6 Connect one ohm meter probe to the connector in the basket shaft Connect the other ohm meter probe to the basket shaft itself If the metered value is less than 1 ohm circuit is functioning properly double check machine configuration and cycle programming If 1 ohm or greater remove machine basket and proceed to Paragraph 108 108 Troubleshooting from Basket Shaft to Moisture Sensing Baffle with l 2 220 Machine Basket Removed Disconnect and remove slip ring assembly before removing machine basket Remove machine basket 70422101R1 LED OPL and UniLinc Troubleshooting 3 Connect one ohm meter probe to the connector in the basket shaft Refer to Figure 29 TMB2400S Connector Gray Wire Harness Terminal Figure 29 4 Connect the other ohm meter probe to one of the gray wire harness terminals on the back end of the machine basket If the metered value is less than 1 ohm proceed to Step 5 If 1 ohm or greater replace harness and return to Paragraph 104 5 Connect one ohm meter probe to the connector in the basket shaft 6 Connect the other ohm meter probe to the other gray wire harness terminal on the back end of the machine basket If the metered value is less than 1 ohm procee
219. terminal of the motor control relay Yes Is there voltage at No the output terminal of the fan motor relay Yes 5 No Is there voltage at terminal 3 of the fan motor Yes 70422101R1 thermistor operational Correct wiring between H5 13 and N O of airflow switch Replace control Yes Correct wiring between input and H5 1 Replace relay Check wiring between motor terminal 3 and motor relay Electronic Control Troubleshooting Is there voltage at Check motor terminal 5 of the fan or replace if motor relay necessary Correct wiring between cabinet limit and terminal 5 of fan motor Is there voltage to the input of the cabinet limit Check cabinet limit for proper operation Replace if necessary Is there voltage to the output of the cabinet limit Correct wiring Is there voltage to the between cabinet limit input of the stove limit and stove limit thermostat Is there voltage to the Check operation of output side of the stove stove limit Replace limit if necessary Continued on next page TMB22758 a 175 Electronic Control Troubleshooting 88 Unit Will Not Heat Gas continued Continued from Is there a flame Unit operational previous page Is there voltage to Correct wiring terminal 2 of the between terminal 2 Ignition Control Module of ICM and stove ICM limit Note Make sure unit
220. termittent signal or high resistance is sensed before the 30 seconds expire the test is terminated and the control will show indicating that the test has failed At this time the user has the option to press the Back lt keypad to return and run the test again If the control ran the whole test reading the expected moisture sensor level and without an intermittent signal or high resistance 55 will be shown If either the loading or lint doors are opened during the test the control will reset the test step and allow it to be run again When the test is complete and result is displayed the control sounds a 5 second audio signal Press a key to advance to the next test step If the Up or Down keypad is pressed while the test Is in progress the control will toggle between displays HH eral HH and Snar HHH If the display is left on ral HH or Snr HHH for 5 seconds the 05 control will revert to showing raol P 70422101R1 Moisture Sensor Test Resistance Test Jumper 2 This step is skipped if the control is not configured for Moisture Sensing When entering this test the control will show rnal 2 while flashing the Start key LED one second on one second off allowing the user to place the 510k Ohm resistor between the cylinder and the baffle black jumper which simulates an expected moisture sensor level When the Start keypad is pressed this st
221. the micro control Correct wiring between H3 and transformer 44 Is there voltage to the input of the fuse on the micro control Is there voltage to the opposite side of the fuse on the micro control Replace micro control Check fuse making sure it is not blown Replace if necessary Replace micro control TMB1894S 70422101R1 Troubleshooting 25 Electric OM Control No Heat With Cycle Selected Unit Running and Calling For Heat 460 480 Volt 60 Hertz 3 Phase and 208 240 Volt 60 Hertz 3 Phase Reversing and Nonreversing Electric OM Models No heat with cycle selected unit running and calling for heat Is there voltage at H2 13 Replace micro control Correct wiring between H2 6 Is there voltage at No H2 6 and H2 13 Check for proper If there No thermistor voltage at operation Replace H2 5 micro control if necessary there I voltage t Correct wiring i d between airflow switch cabinet limit orange brown wire common and airflow terminal switch th It to the N O Check for terminal of the proper airflow airflow Replace switch airflow switch 70422101R1 Is there voltage to terminal 14 of the motor relay Correct wiring between motor relay and micr
222. there 24 Volts across Yes the coil of the relay No Check motor for proper operation Replace if necessary Correct wiring between the motor relay and the motor Correct wiring supplying voltage to the contacts of the motor relay Check relay for proper operation Replace if necessary 5 Is there 24 volts at terminal H2 4 on the control Measured to transformer neutral Yes No 6 Is there 24 volts to Yes terminal H2 1 on the control No Correct wiring to the control Refer to Door Open Indicator Correct wiring between control and motor relay coil Press the start button If machine does not start replace control TMB1799S 70422101R1 NetMaster Troubleshooting KT075 Models Only No Start Run 1 e 181 1 SERVICE N o TBI N CONNECTION x 3 m a GROUND PRIMARY E E TERMINAL FUSE 2A T P 250V 77 E WHT BLU THERMISTOR RED BLU ws ERI He NETMASTER CONTROL Bp moon VOLTAGE CONFIGURATION INPUT 1 T mur EMP REGULATING 2 5 JUMPER 2 2 TO H2 5 AS FOLLOwS CONTROL CIRCUIT CONTROLS 24Voc WIRE JUMPER Power 5
223. tor Correct wiring between control and motor relay coil Press the start button If machine does not start replace control TMB2272S 70422101R1 Electronic Control Troubleshooting No Start Run TBI e e TB L1 SERVICE Q 3 gt gt 181 12 x x 5 1 2 GROUND TERMINAL PRIMARY FUSE 2A T _ _ ig 250V B le 2 SEE TRANSFORMER CONFIGURATI DETAILS M SEE CONTROL DIAGRAM FOR CONTROL RCUIT DETAILS o o TMB22738 70422101R1 173 Electronic Control Troubleshooting VOLTAG TION DIAGRAM LIN VOLTAG gt 1 ND CONN 174 ECTIONS OTOR No Start Run TUMBLER CONTROL THERMISTOR BLK BLK 1 5 CONTROL war evo CONT RED BLu 1 SUPPLY 4 a FAN MOTOR RELAY 4 FORWARD MOTOR 4 w TRANSFORMER SECONDARY REVERSE MOTOR RELAY E 3 1 25 T HEAT RELAY 5 9 f R
224. trap cord and alligator clip are designed to carry away any electrostatic charge from your body and to direct charge to an available ground By using this static protection device potential electrostatic discharge problems associated with handling of electronic control will be minimized Always handle electronic control by its metal edges 57 Fire Supression System Troubleshooting 31 Tumble Dryer Does Not Operate and Light Is On Are there signs of fire or water discharge Does tumble dryer operate after pressing the reset button for at least one second Is there power H2 3 and H2 4 of the reset button Replace reset button 5 Volts DC between No Refer to Was there a fire Water Discharge No Fire flowchart Replace tumble dryer Call the fire department DO NOT disconnect electric power to the tumble dryer DO NOT disconnect water to the tumble dryer DO NOT touch the tumble dryer Retest Extreme cold weather will cause a system shutdown Runa Replace fire Disconnect continuity test suppression power to across the system tumble dryer reset switch control Is it shorted board Replace switch Reset fire suppression system control Is the resistance for both temperature sensors within the acceptable range Sensor 1 H4 1 to H4 2 Sensor 2 H4 4 to H4 3 Replace fire Reset fire suppression suppression system system control board control Acceptable resist
225. trol from the Micro Wand Is there a response of any kind from the electronic control Aim Micro Wand closer and try again Does the electronic Communication control display E OF sequence checks or C out Check the following Is IR communication disabled by manual programming Is the IR window on the control covered or blocked If needed change control board 92 Does the control Check the following 15 the battery low on the Micro Wand Is the IR window covered or blocked on the control If needed replace the electronic control Is the IR cap properly attached to the Micro Wand 17935 70422101R1 NetMaster Troubleshooting KT075 Models Only 52 Coins Ignored When Entered 70422101R1 Gas and electric heat Single and three phase power voltage Start coin drop diagnostic tests for test procedures Exit diagnostic testing and reset control Prompting for vend price Does the display on the electronic control increment properly Is connector H5 on the Reconnect and run control firmly seated in diagnostic test its receptacle again Is the 3 pin connector Reconnect and run between coin drop and diagnostic test control connected again correctly Are wires exiting coin drop optical sensor Replace coin drop cracked or broken Replace coin drop If problem still exists then replace the electronic contr
226. trol relay Is there 24 VAC at terminal 14 of motor control relay Replace motor control relay 70422101R1 Micro Display Control MDC Troubleshooting Correct wiring Is there 24 VAC at between terminal 3 terminal 3 of fan of fan motor motor centrifugal centrifugal switch switch and terminal 13 of motor control relay Is there 24 VAC at terminal 5 of Replace fan motor fan motor centrifugal switch Correct wiring Is there 24 VAC to the between cabinet input side of the limit and terminal 5 cabinet limit of fan motor centrifugal switch Is there 24 VAC at output side of Replace cabinet cabinet limit limit Is there 24 VAC to the Correct wiring input side of the stove between stove limit limit and cabinet limit TMB23118 a 87 Micro Display Control MDC Troubleshooting 49 Unit Will Not Heat Electric continued 88 Note Please make the appropriate adjustments if your unit is single phase Is there 24 VAC at output Replace the stove side of the stove limit limit Correct wiring between heater cotactor and stove limit Is there 24 VAC across the coil s of the heater contactor s Is there supply voltage Correct wiring to the L1 L2 and L3 between HC1 and terminals of HC1 Line voltage YES Is there supply voltage Correct wiring to the L1 L2 and L3 between HC2 and terminals of HC2 Line voltage YES
227. ts 70422101R1 Troubleshooting Does heat source shut off prematurely Refer to Paragraph Z Is drying timer improperly set Yes Set selector for higher setting Is voltage incorrect Refer to Installation Manual for electrical requirements Is make up air inadequate Refer to Installation Manual for make up air requirements TMB1882S 29 Troubleshooting 12 Tumble Dryer Overheating Tumbler overheating Remove obstruction or lint Replace orifices Gas Models Refer to the Is exhaust p exhaust ductwork Are main Installation system s Refer to burner orifices Manual for burner restricted or N EN Installation incorrect orifice inadequate Manual for exhaust requirements system requirements Gas Models Gas pressure Test thermistor by Is gas must be as removing harness from pressure too specified on thermistor terminals Check pae high serial plate Is Yes resistance across thermistor terminals should read inoperative approximately 50 000 Ohms at 77 F Resistance should decrease with a temperature increase Refer to if Installation Is make up air Manual for inadequate make up air requirements Is cabinet Check limit or bu
228. ts are glowing bright red orange there is not enough airflow Yes Correct wiring between HC1 and supply Replace 1 No Correct wiring to the elements Check for opens or shorts in the elements Unit operational TMB2325S b 70422101R1 Troubleshooting 26 Gas OM Control No Heat With Cycle Selected Unit Running and Calling For Heat 120 Volt 60 Hertz 1 Phase and 208 240 Volt 60 Hertz 1 Phase Nonreversing 460 480 Volt 60 Hertz 3 Phase and 208 240 Volt 60 Hertz 3 Phase Reversing and Nonreversing Gas OM Models No heat with cycle selected unit running and calling for heat Is there voltage at H2 13 Replace micro control Is there voltage at H2 Correct wiring between H2 6 micro control 6 of the micro and he T9 on the micro control control Is there Check for proper voltage at thermistor H2 5 of the operation Replace micro control if necessary Is there voltage to COM terminal of the airflow switch Is there voltage to the N O terminal of the airflow switch Correct wiring between airflow switch and cabinet limit Check for proper operation and airflow Replace airflow switch if necessary 70422101R1 Is there voltage to input of the motor relay I
229. tumbler before servicing Close steam valve to steam tumbler before servicing Never start the tumbler with any guards panels removed Whenever ground wires are removed during servicing these ground wires must be reconnected to ensure that the tumbler is properly grounded IMPORTANT Refer to appropriate wiring diagram for aid in testing tumble dryer components 16 70422101R1 1 Motor Does Not Start Motor does not start Check power and fuses Replace fuses if necessary Is electrical power off or have any fuses blown Close door or test switch and replace if inoperative Is loading door open or is door switch inoperative Close lint door confirm switch is positioned to actuate with door closed Is lint door open or is lint door switch inoperative Replace trunnion housing bearings trunnion shaft assembly binding in trunnion housing bearings Press start switch or test switch and replace if inoperative Is start circuit incomplete 70422101R1 Troubleshooting Replace bearings Is idler shaft binding in idler housing bearings Have motor tested and 15 motor replace if inoperative inoperative Turn drying timer clockwise to desired setting
230. tween COM of airflow switch and FS 1 of MDC control Is there 24 VAC on COM of airflow switch Is there 24 VAC at N C terminal of airflow switch Check for proper function of airflow switch and replace if necessary YES Correct wiring between terminal 7 on motor control relay and N C terminal on airflow switch Is there 24 VAC on terminal 13 of motor control relay Is there 24 VAC on terminal 14 of motor control relay Replace motor control relay 84 Correct wiring between terminal 3 of fan motor centrifugal switch and terminal 4 of motor control relay Is there 24 VAC on terminal 3 of fan motor centrifugal switch Is there 24 VAC at terminal 5 of fan motor centrifugal switch Replace fan motor Correct wiring between cabinet limit and terminal 5 of fan motor centrifugal switch Is there 24 VAC to the input side of the cabinet limit Is there 24 VAC to the output Replace cabinet side of the cabinet limit limit TMB2309S a 70422101R1 Micro Display Control MDC Troubleshooting 48 Unit Will Not Heat Steam continued 11 Correct wiring between steam valve and stove limit Is there 24 VAC across the coil of the steam valve Does the steam valve open allowing steam to flow Replace steam valve Unit operational TMB2309S b Please see following page for
231. tween control and thermistor Refer to wiring diagram for proper wiring Check control Replace if inoperative Shorted thermistor error Check thermistor Replace if inoperative Check wiring between control and thermistor Refer to wiring diagram for proper wiring Check control Replace if inoperative Airflow switch closed when cycle started Check airflow switch Replace if inoperative Airflow switch failed to closed after cycle Check airflow switch Replace if started inoperative AF flashing Airflow switch opened closed 5 or more e Check airflow switch Replace if times in a running cycle inoperative 164 70422101R1 Section 10 Electronic Control Troubleshooting Models with KB KC KW KX KY KZ LB LC LW LX LY LZ WB WC WW WX WY and WZ Control Suffixes _ To reduce the risk of electric shock fire explosion serious injury or death Disconnect electric power to the tumbler before servicing Close gas shut off valve to gas tumbler before servicing Close steam valve to steam tumbler before servicing Never start the tumbler with any guards panels removed Whenever ground wires are removed during servicing these ground wires must be reconnected to ensure that the tumbler is properly grounded 70422101R1 165 Electronic Control Troubleshooting 83 No Infrared Communication Gas and electric heat Single and three phase Attempt to power supply communicate with t
232. tween terminal 2 of ICM and stove limit YES Note Make sure unit is not in a lock out 14 condition Is there 24 VAC at NO terminal 1 of ICM Replace ICM board board YES 15 Is there 24 VAC across NO Correct wiring the coils of the gas between gas valve valve and ICM board YES Is there gas flow NO Replace gas valve coils or complete through the gas valve gas valve YES NO Replace high voltage ignition Does the igniter spark cable igniter or ICM board YES TMB2307S b Please see following page for wiring diagram information 82 70422101R1 Micro Display Control MDC Troubleshooting Unit Will Not Heat Gas TB1 e e 1781 11 SERVICE N e TBI N CONNECTION s a 5 P E GROUND TERMINAL u x 3 THERMISTOR 0 PRMARY Buc FUSE n Ll oy E MDC CONTROL M 8 VOLTAGE CONFIGURATION INOT TEMP REGULATI 3 Y H2 5 JUMPER 2 2 TO 2 5 FOLLOWS CONTROL CIRCUIT CONTROL 24Vac WIRE JUMPER POWER t lz HEAT RELAY SECONDARY 120Vac 6 8K ohm 5 watt SUPPLY CHASSIS GROUND FUSE Z40Vac 13 6K onm AQ watt
233. uipped machines verify the contrast is set correctly prior to troubleshooting Is there 24 volts AC Check Transformer at H1 1 to H1 3 and Fuse F4 NOTE If the voltage is present but lower than 24 volts AC ensure the correct transformer configuration jumper is installed Is there 24 volts AC at H1 2 to H1 4 Replace Board 1 NOTE The pins H1 2 and H1 4 on I O Board that connect to pins H8 1 and H8 3 on the front end control only provide 24 volts AC to the front end control s network circuitry Is there 24 volts AC at Replace or H8 1 to H8 3 repair harness NOTE The following checks are DC voltage checks Verify correct transformer configuration jumper is Is there 24 volts DC installed Check harness at H3 13 to H3 11 closest and I O Board AP1 to the front end control Replace as necessary CAUTION Always power down the machine PRIOR to disconnecting or connecting the H3 harness Once disconnected you can power up the machine for troubleshooting Failure to do so may damage the front end control 4b Is there 29 33 volts DC at H3 14 to H3 11 Is there 5 volts DC at H3 12 to H3 11 Replace front end control AP2 TMB2377S 206 70422101R1 No Display LED OPL and UniLinc Troubleshooting
234. ure and compare to pressure specified on serial plate If pressure cannot be obtained contact gas supplier Tumbler is equipped for type of gas specified on serial plate at 0 2 000 feet altitude Refer to Installation Manual next page Continued on TMB2324S a 23 Troubleshooting 6 Heating Element Does Not Heat or Burner Does Not Ignite continued Continued from previous page Gas Models Are gas valve coils inoperative Yes Gas Models Test coils and replace if available as a service part otherwise replace valve airflow switch inoperative Ae Yes Test igniter and Is igniter replace if inoperative inoperative Gas Models Yes liar e Is igniter control con z inoperative i inoperative Clean lint compartment after every eight hour shift Check back draft damper for foreign objects lint accumulation or other causes that may prevent damper from opening Check ductwork for lint build up Refer to Installation Manual to ensure that ductwork and make up air openings are sized properly Check exhaust outlet If a screen has been installed on the outlet it may be clogged with lint or frozen over in winter NEVER install a screen over the exhaust outlet 24 Gas and Electric Models Is high limit thermostat inoperative Yes lest t
235. urrently be trying to heat with airflow switch closed fan motor contactor engaged and fan motor centrifigal switch closed before checking the status of the cabinet cabinet store and store 2 limits NOTE Not all machines have the stove limit or the secondary stove limit switch Please refer to your machine s wiring diagram Also some machines have manual reset thermostats these must be reset prior to attempting the troubleshooting procedures 1 No Check Transformer Is there 24 volts AC at H6 1 to H6 9 and Fuse F3 NOTE If the voltage is present but lower than 24 volts AC ensure the correct transformer configuration jumper is installed Yes 2 No Is there 24 volts AC st Replace H2 9 to H6 9 Board AP1 Yes No Check harness and Is there 24 volts AC at cabinet limit switch H2 2 to H6 9 Repair or replace as required Yes 4 No Is there 24 volts AC at Replace H2 8 to H6 9 Board AP1 Yes No Check harness and Is there 24 volts AC at H2 1 to H6 9 stove limit switch Repair or replace as required NOTE Steam model machines will Yes utilize a jumper from pins H2 8 to H2 1 204 Is there 24 volts AC at No Replace H2 7 to H6 9 Board AP1 Yes No Check harness and Is there 24 volts AC at H2 11 to H6 9 secondary stove limit switch Repair or replace as required Yes NOTE The following checks are DC Voltage checks 8
236. valve SV Correct wiring between SV and CT TMB2292S b Please see following page for wiring diagram information 192 70422101R1 Electronic Control Troubleshooting CE Models Will Not Heat Gas Steam SEE VOLTAGE OPTION DIAGRAM 22878 70422101R1 193 Electronic Control Troubleshooting 95 CE Models Will Not Heat Electric Note Voltage checks Note Test conducted referenced to neutral with unit running and calling for heat unless ON stated 1 No Is there voltage on H5 13 on the control Yes Is there voltage at H5 1 no of the control Yes Is there voltage at No terminal 14 of the K2 relay Yes 4 Is there voltage at No N O terminal of the K2 relay Yes Is there voltage to the COM terminal of motor centrifical switch MCS No Yes 6 Is there voltage to the No output side of the MCS Yes 194 Check airflow switch AFS for proper operation If needed correct wiring between AFS and H5 13 Check thermistor for proper operation Replace if necessary Replace control if thermistor is good Correct wiring between H5 1 on the control and terminal 14 of K2 C
237. ve action taken The tumble dryer must not be operated if the airflow switch does not operate properly Faulty airflow switch operation may cause an explosive gas mixture to collect in the tumble dryer WO072R1 IMPORTANT Airflow switch vane must remain closed during operation If it opens and closes during the drying cycle this indicates insufficient airflow through the tumble dryer If switch remains open or pops open and closed during the cycle the heating system will shut off The cylinder and fan will continue to operate even though the airflow switch is indicating insufficient airflow NOTE To properly mount the airflow switch bracket or in case of a load not drying the airflow switch bracket may need to be checked for proper alignment Be sure the locator pins are securely in their respective holes before tightening the bracket mounting screws This will assure proper alignment of the airflow switch arm in the channel of the airflow switch bracket and prevent binding of the arm 64 37 Loading Door Switch The door switch should be adjusted so the cylinder stops when door is opened 51 mm 2 inches plus or minus 6 mm 0 25 inch This switch is a normally open switch and is closed by the hinge cam when the door is closed If adjustment is required refer to Figure 12 and proceed as follows 1 Close door and start tumble dryer slowly open loading door Cylinder and heat system should shut off when door is open

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