Home

Service Manual

1. 1157 6071 Control Module with i OND GR Remote Display Module PERIMETER HEATER GY GY BK MULL ON HEATER DISPLAY POWER BK BK MODULE Or SVIE f o o Z a gt MULL ION HEATER g av BK 1 2 DOOR ONLY Oo o 560 92939 0 o 5 Cd MULL ION HEATER 1 2 DOOR ONLY BK BK 0 D 4 c cl i DISPLAY CABLE DEFROST CABINET b m 4111 CONDENSATE N THERM THERM r GND LGR BR GR a Lo BR BR w FLOAT SWITCH BU BU BK O 0 0 o Ooo am oa m NON meon 1 BK j Mu DOOR SWITCH DOOR SWITCH CONTROL DOOR OPEN DOOR OPEN T T MODULE w wl 8 L C gc do do oF BK BK 1 2 3 4 5 6 Ge Ss 9 o 9 9 o o DBU DBU CABINET 2 LIGHT BK v EVAPORATOR 24 FAN 22501 CABINET 4 BK BK LIGHT e v v GND EVAPORATOR R BK FEN alla GND EVAPORATOR GR FAN use ea h w w 4 GND w HIGH PRESSURE T SWETEH GY BK BK BK w A 5 G BK G DEFROST HEATER and later DEFROST THERMOSTAT GY WIRE COLOR CODE DRAIN HEATER RUN CAP w 23 5 MFD BK BLACK ex 220 BROWN COMPRESSOR
2. 41 A service f r Refrigerant asset a aa aa aan 41 T Refrigerant RECOVETY EE 41 42 3 Ev c ation and Recharge sissisodan a 42 B Important Notes for Component Heplacement 44 C Door Reversal 44 LA IGT CS EN U HE 45 Ty OMG En NNI uuu 45 2 Pover Supply COR CMO ME 45 VI Preparing the Appliance for Periods of 46 VIL DS use senka 47 VII Technical Informations Ea E 48 A Electrical and Refrigerant 48 glate RTE e E 49 Important Safety Information Throughout this manual notices appear to bring your attention to situations which could result in death serious injury or damage to the appliance or damage to property WARNING Indicates a hazardous situation which could result in death or serious injury NOTICE Indicates a situation which could result in damage to the appliance or property IMPORTANT Indicates important information about the use and care of the appliance WARNING The appliance should be destined only to the use for which it has been expressly conceived Any other use should be considered improper and therefore dangerous The manufacturer cannot be held responsible for injury or damage resulting from improper inco
3. 115 60 1 Remote Display Module GND r DISPLAY BK MODULE p POWER S v s a y SWITCH e E v oio Bk ooo oo BK BR CONDENSATE Ww 1 PUMP D SPLAY CABLE DEFROST CABINET T THERM THERM GR m 1 FLOAT SWITCH Lo BR GR d BR BR EE En BU BU SWITCH Ld i BK I een aD ow Tun NA qo BALLAST ccu EE MED ee WE p FL LIGHTO BK LBU CONTROL t aje MODULE DOOR SWITCH m DOOR OPEN 4 8 1 C LL HN F 2 3 4 5 6 e gg o OO 0 o 6 5 DBU l o o 4 3 BK EVAPORATOR z FAN S DOOR SWITCH BK 2 BK GND w Ler EVAPORATOR FAN R i w GND Lae w 6Y 3 w 4 g E START CAP HIGH PRESSURE COMPRESSOR 280 MFD COMPRESSOR AT ROV 3 PROTECTOR SN BK BK 10 w w BK m R o 7 li se 4 1 SANG COMPRESSOR RELAY P 12 START RELAY WIRE COLOR CODE BK BLACK BR BROWN CONDENSER GND BU BLUF SE dal GR DBU DARK BLUE con FR eo 00 GR GREEN GND GY GRAY ler LBU LIGHT BLUE i O ORANGE P PINK High Pressure Switch R RED V VIOLET Cut out 270 10 PSIG W WHITE R Y YELLOW Cut in 190 20 PSIG 49 1b CR1B FG FGY Auxiliary Code B 5 B and Later
4. E I de E ITCH MULLION HEATE Control Module with ES Integrated Display 5 ENSATE THERM THERM 4 AGT L ap ABINET LA 2 el WA e e E BALLAST 15 Lin TROL E sl LE DOOR CULTE ts LT L HI F 11 T d ih R ITCH 2 ELA E AT FA TART HIGH PRE E E F ITCH T d EXTERNAL TECT Bob E EL IRE L E BI BLACI D D ENSE E BLUE FA 1 B A BLUE 2 EE baz LB LIGHT BLUE 2 E High Pressure Svvitch IOLET HITE 300210 PSIG ELL 190 20 PSIG 50 2a CR1B FS HS CR3B FS HS Auxiliary Code V 5 to B 5 A Control Module with Remote Display Module 115 60 1 L DISPLAY BK MODULE ee 2 POWER 2 c E 2v SWITCH ove O o nen ooo ooo BK MULLION HEATER 1 2 DOOR ONLYO BK o 0 zent Zeg BK BR AT wW DISPLAY M na CABLE DEFROST CABINET THERM THERM OND GR BR sR Ed BR BR FLOAT SWITCH H BU BU BK o 00 o o oo m am nN am ei N DN nmm BK BK LBU DOOR SWITCH CONTROL DOOR OPEN LBU MODULE m s C L L HNF 2 3 4 5 6 BK e e o o o o o o 6 5 DBU DBU C
5. 46 VII Disposal WARNING When preparing the appliance for disposal remove the door to reduce the risk of children getting trapped Leave the shelves in place so that children may not easily climb inside The appliance contains refrigerant and must be disposed of in accordance with applicable national state and local codes and regulations Refrigerant must be recovered by properly certified service personnel 47 Vill Technical Information A Electrical and Refrigerant Data Design Pressure AC Supply PSIG Refrigerant oz Amperes Voltage HIGH LOW 134a 4 1 CR1B FG FGY FS HS 1 CF1B FG FGY FS HS 9 8 CR2BFGESHS en CS E CR2B FGY 14 1 CF2B FG FS HS ug CF2B FGY 98 2 16 1 Section 2 Section 1 1 Section 8 2 Section 17 See the nameplate for electrical and refrigerant data The nameplate is located inside the cabinet We reserve the right to make changes in specifications and design without prior notice CR3B FS HS 115 60 1 CF3B FS HS 208 230 115 60 1 48 B Wiring Diagrams 1a CR1B FG Auxiliary Code A 5 to B 5 A Control Module with
6. COMPRESSOR RELAY 12 START RELAY BR BK WIRE COLOR CODE CONDENSER GND BK BLACK FAN Ler BR BROWN ran EX BK BU BU BLUE GND DBU DARK BLUE len GR GREEN g MULL ION HEATER GY GRAY BK BK BK LBU LIGHT BLUE o ORANGE P PIN Hi i High Pressure Switch R RED V VIOLET W WHITE Y YELLOV 3b CR2B FG FGY Auxiliary Code B 6 and Later ITCH E ATE Br L Br Control Module with aran ntegrated Display ABINET LA AZINET KE LIGHT AS INET EF B THE THERM BALLAST LB e JFL LIGHTOC d T ITCH ITCH I E n TROL Ln LE 1 A L H CF t A ITCH E AT 4 E d AT E 4 HIGH E E E I5 TE ITCH AT 1 EXTE L TECT REL LLI HEATE I I IRE L E Bt BLACI eege laq l l s a FA LLI HEATE LJ 1 B BLUE B A BLUE ep LLLI EE Wee A LL I HEATE 1 LB LIGHT BLUE A CMM LZ AQ LLL FP er High Pressure Switch Cut out 300 10 PSIG 54 190 20 PSIG 4a CR2B FS and CR3B FS Auxiliary Code V 5 to B 5 B CR2B HS Auxiliary Code A 5 to
7. Comp and ConFM Check for 115VAC at CM C1 R to neutral W If 115VAC is not present check CTh status See II D Thermistor Check If CTh ohm reading is in proper range replace CM and DM with HS kit If 115VAC is present check for 115VAC at CR 4 BK to neutral W and CR 1 R to neutral W If 115VAC is present at CR 4 BK to neutral W but not at CR 1 R to neutral W replace CR If 115VAC is present at CR 1 R and Comp or ConFM are not energized check Comp start components Comp protector internal on 1 section external on 2 section and Comp motor winding continuity If ConFM is not energized check ConFM fan blades for binding and motor winding continuity EvapFM Confirm EvapFM energizes If not confirm doors are closed and DS engaged Next check for 115VAC at CM F6 Bk to neutral W If 115VAC is not present replace CM and DM with HS kit If 115VAC is present check for 115VAC at DSR 4 DBU to neutral W If 115VAC is not present check for 115VAC at DSR 6 BK to neutral W If 115VAC is present on DSR 6 BK to neutral W and not on DSR 4 DBU to neutral W replace DSR If 115VAC is present on DSR 4 DBU to neutral W and EvapFM is not energized check EvapFM blades for binding and EvapFM continuity 2 13 min temperature display delay timer terminates 10 min after Comp ConFM and EvapFM energize dEF is replaced by cabinet temperature on display If not replace CM and DM with HS kit Legen
8. and Comp motor winding continuity If ConFM is not energized check ConFM fan blades for binding and motor winding continuity EvapFM Confirm EvapFM icon turns on and EvapFM energizes If not confirm doors are closed and DS engaged Next check for 115VAC at CM F5 Y to neutral W If 115VAC is not present replace CM If 115VAC is present check for 115VAC at DSR 4 DBU to neutral W If 115VAC is not present check for 115VAC at DSR 6 BK to neutral VV If 115VAC is present on DSR 6 BK to neutral W and not on DSR 4 DBU to neutral W replace DSR If 115VAC is present on DSR 4 DBU to neutral W and EvapFM is not energized check EvapFM blades for binding and EvapFM continuity 2 15 min temperature display delay timer terminates 12 min after Comp ConFM and EvapFM energize dEF is replaced by cabinet temperature on display If not replace CM Legend CM control module Comp compressor ConFM condenser fan motor CR compressor relay CTh cabinet thermistor DH defrost heater DrH drain heater DSR door switch relay DT defrost thermostat DTh defrost thermistor EvapFM evaporator fan motors HPS high pressure switch MH mullion heater PH perimeter heater TXV thermostatic expansion valve 25 C Control Module Check 1 Control Module with Remote Display Module Before replacing CM that does not show a visible defect and that you suspect is bad conduct the following check procedure This procedure will hel
9. BL E L ps EE LBU LIGHT BLUE ls ANGE LEE High Pressure Switch ELL Cut out 490 10 PSIG 370 20 PSIG Defrost Thermostat 120 F 5 F 49 C 3 C 70 F 5 F 21 C 3 C 6a CF1B FS and CF3B FS one section side Auxiliary Code A 5 to B 5 B CF1B HS Auxiliary Code A 5 to B 5 A CF3B HS one section side Auxiliary Code B 6 and Later Control Module with 115 60 1 Remote Display Module E 1 060 er DISPLAY BK PERIMETER HEATER MODULE POWER w v v a o SWITCH GY GY St 55 MESSE nen 99572 MULLION HEATER 1 2 DOOR ONLY Bk BK 0 ee Aen Zeg BK BR CONDENSATE w v T PUMP 1 DISPLAY GND CABLE DEFROST CABINET GR THERM THERM L BR GR B a da BK Bk FLOAT SWITCH W BU BU BK LBU 0 Oo 000 am N 5 DOOR SWITCH LBU Na mo DOOR OPEN BK D w 8 7 CONTROL el ODULE BK Ei 6 5 T eu C L L H NF 4 3 2348 6 EE e ENER FAN DOOR SWITCH BK FY RELAY LOO 679 BK GND EVAPORATOR GR n FAN FN w w BK 1 R GND GR BK
10. DBU to neutral W If 115VAC is not present check for 115VAC at DSR 6 BK to neutral W If 115VAC is present at DSR 6 BK to neutral W and not at DSR 4 DBU to neutral VV replace DSR If 115VAC is present at DSR 4 DBU to neutral VV check EvapFM blades for binding and EvapFM continuity d Comp and ConFM Diagnosis Confirm Comp and ConFM energize If not check for 115VAC at CM C1 R to neutral W If 115VAC is not present check CTh status See II D Thermistor Check If CTh ohm reading is in proper range replace CM and DM with HS kit If 115VAC is present at CM C1 R to neutral VV check continuity of HPS If open allow time for HPS to reset If HPS does not reset see e HPS Activation below If HPS is closed check for 115VAC at CR 5 GY to CR 6 neutral W If 115VAC is present check for 115VAC at CR 1 R to neutral W If 115VAC is not present replace CR If 115VAC is present and ConFM is energized but Comp is not check for 115VAC at Comp protector if external internal on 1 section external on 2 section to neutral W If 115VAC is not present give time for Comp protector to cool and reset If Comp protector does not reset replace Comp protector If 115VAC is present check run capacitor start capacitor start relay and Comp motor windings If ConFM is not energized check ConFM fan blades for binding and motor winding continuity If Comp and ConFM are energized and the cabinet does not cool down c
11. 10 PSIG 37020 PSIG 63 120 F 5 F 49 C 3 C 70 F 5 F 21 C43 C 9 CR3B FS HS Receptacle Box Connection 5 WIRE COLOR CODE BK BLACK GR GREEN W WHITE GND U Note Only the top receptacles have povver 10 CF3B FS HS Receptacle Box Connection WIRE COLOR CODE BK BLACK GR GREEN R RED W WHITE GND U L N BK W GR 115 60 1 L N GND BK W 115 60 1 e 115 60 1 GND GND TO SYSTEM TO SYSTEM R BK W GR 208 230 80 1 L L2 N G t 115 6071 EEE GR 115 6071 LI GND L2 GND N TO SYSTEM TO SYSTEM Note Only the top receptacles have power 64
12. B 5 A CR3B HS Auxiliary Code A 5 to B 5 C Control Module with 3 1157 6071 Remote Display Module GND L r DISPLAY BK MODULE v v a POWER li 22 Z cn ove o c o Oo gt o 000 oo BK BK BR CONDENSATE vv A PUMP GND LGR DISPLAY Lo CABLE DEFROST CABINET THERM THERM FLOAT SWITCH BR GR BK BR BR BK LBU BU BU 8 olo ol oo o 000 DOOR SWITCH DOOR SWITCH am 4 Ek DOOR OPEN DOOR OPEN ou ra ra N N mmm M wW i 8 n 7 CONTROL Bk Bk MODULE T SI Ze CABINE DBU l i LIGHT C L L H NF v w 2 3 4 5 6 EVAPORATOR gt i o H FAN ys 9 9 g o DOOR SWITCH CABINE EA RELAY LIGHT m 89 BK v GND EVAPORATOR GR BK FAN 4 BK BK GND R w EVAPORATOR FAN EGR BK BK w vi GND GR w 4 w GY 5 6 w E START CAP 25 COMPRESSOR 280 MFD COMPRESSOR AT L20V T PROTECTOR BK BK S loe v BK R 13 N O 1 14 a R COMPRESSOR RELAY E T MULLION HEATER RELAY BR BK BK 4 WIRE COLOR CODE CONDENSER GND H BK BLACK DAN R MULL ION HEAT
13. Comp run timer starts Once DTh is at or below 32 F 0 C with 4 hr cumulative Comp run timer satisfied Comp energized more than 4 hrs defrost icon turns on and dEF is displayed MH and PH continue DH and DrH energize If on Comp and EvapFM icons turn off Comp ConFM and EvapFM de energize 1b Manually Initiated To initiate a manual defrost press the manual defrost button on display Comp and EvapFM icons turn off Defrost icon turns on and dEF is displayed MH and PH continue DH and DrH energize Comp and EvapFM icons turn off Comp ConFM and EvapFM de energize 2a Temperature Time Initiated Defrost Termination 1 DTh warms to 59 F 15 C Defrost icon dEF MH and PH continue DH and DrH de energize 3 min Comp delay timer starts 7 min EvapFM delay timer starts and 18 min temperature display delay timer starts 2 3 min Comp delay timer terminates dEF MH and PH continue Defrost icon turns off and Comp icon turns on and Comp and ConFM energize 3 4 min later 7 min EvapFM delay timer terminates Comp ConFM dEF MH and PH continue EvapFM icon turns on and EvapFM energizes Note that the 7 min EvapFM delay time is a maximum if the defrost thermistor cools to 25 F 3 9 C before the 7 min EvapFM delay timer terminates EvapFM icon turns on and EvapFM energizes 4 11 min later 18 min temperature display delay timer terminates dEF is replaced by cabinet temperature 2b Manually Init
14. R B5 BU BLUE COMPRESSOR RELAY DBU DARK BLUE PROTECTOR BK j BK GR GREEN e START CAP GY GRAY 4 9701 410 MFD AT 165V w LBU LIGHT BLUE OE OF GND o ORANGE RELAY BR w 4 P PIN R en A R RED R as l ban n V VIOLET GND CONDENSER 1 WHITE DENSER og Y YELLOV R Defrost Thermostat 120 F 5 F 49 C 3 C i 70 F 5 F 21 C 3 C 8b CF2B FS and CF3B FS two section side Auxiliary Code B 5 B and Later CF2B HS and CF3B HS two section side Auxiliary Code B 6 and Later II L ERIMETE HEETE 4 LLI HEATE E I I ITCH Bh een seer Control Module with 1 2 DOOR ONL Integrated Display sf wv ABINET DEFROST r THE THERM FL T ITCH Me gil ur ITCH ITCH E TROL LE Lro L H CF 5 ai SI ABINET LIGHT E T s DBL F l Eee FA 1722 de e ei de HIGH RE E TCH 5 e o Bl Bk L EF T HEATE k k EF T THE TAT E OL E AIN HEATE 41 Bt BLACH AT 280v E D L E B 3 BLUE EXTE AL 3 A BLUE TECT EE mu LB LIGHT BLUE E ANGE ELA d E E el IOLET 2 HITE pre ELL High Pressure Switch Defrost Thermostat 490
15. TXV thermostatic expansion valve 2a Freezer Control Module with Remote Display Module 7 Startup Cool Down MH and PH energize There is a slight delay then Comp ConFM and EvapFM energize Cabinet temperature appears on DM Once DTh cools to 32 F 0 C 4 hr Comp cumulative run timer starts a MH and PH Diagnosis Confirm MH and PH energize Check for 115VAC at MH and PH If 115VAC is not present confirm power supply and continuity of power switch If 115VAC is present check amp draw of MH and PH If an amp reading is not present check continuity of MH or PH If open replace MH or PH b CM and DM Diagnosis Cabinet temperature appears on DM If not check for 115VAC at CM L3 BK to CM N5 neutral W If 115VAC is not present check power switch power cord connections and breaker fuse Confirm wiring connections are secure for both CM L3 BK power supply and CM N5 W neutral If 115VAC is present and DM is off confirm display cable connection is secure If DM is still off replace CM and DM with HS kit c EvapFM Diagnosis Confirm EvapFM energizes If not confirm doors are closed and DS engaged Next check for 115VAC at DSR 8 LBU to 7 neutral W If 115VAC is not present check DS continuity If DS is engaged and contacts are open replace DS If 115VAC is present check for 115VAC at CM F6 BK to neutral W If 115VAC is not present replace CM and DM with new HS kit If 115VAC is present check for 115VAC at DSR 4
16. a10way uim e npojy 104002 4ejeeu UOl NW HIN eu 1504Jep wnwxew JUL JOJOW Joje10de e N JdeA3 euin 1S04jep LUNWIUILW uiu oz p Jose 1s0JJep u LA seziBieue ep duo U UM sugs Jeu YO dwog uru z o 1016111 0 jeuiqeo u 1 9 seziBieue duo u ym sues Loun UO dwog wnwuw UILU Z q JOJOW Ue Jesuepuoo yJuo2 S POW SH uo peuedo si 100p Jaddn USYM pue sjapow S4 uo peuedo s Joop 21 NJde 3 e 4 SJON puaba 2 HIN p zi l u p Mzuo 2 N4UOD p zi s u HIN 2 Wadeag peziBieue ap d lo2 duo 2 Wadena 21 N4uon p zi s u HIN 21 HIN 21 N4uoI 21 HIN peziBieue dwog 2 wadeag 2 Wadena 2 dwog 2 N4deng 1 SMEJS JOWN SIEIS JEU Se Es i 1 I o dwog ulul Z uo dwog ulul Z a 0 1400 Ul UL gt 1 yuo ul ut 1 l 002 4098 1 1 juiodjas og 1 1 Aoqe 1uiodjes mojaq Oct 4 07 0 61 4 9 8 p 0 71 4 6 o 0 71 4 6 01 o SWEM 10 o goe UIQ Su 10 Y SI002 U12 dnueis 1 sa ye Aejaq 1 1 14815 UMOG 1002 TS uoneulul9J 1s0Jjoq el 1504 E p A lu y umog 1002 Z umog 005 dnes L 4 sdeis 31949 eys MOL eouenbes 1oje1eB yey 10 Ajenueui p yenlul ysoz p UBYM 1
17. appliance be sure to pull the plug not the cord and do not jerk the cord Before unplugging a 4 prong plug rotate the plug counter clockwise to unlock it Do not splash pour or spray water directly onto or into the appliance This might cause short circuit electric shock corrosion or failure Do not make any alterations to the appliance Alterations could result in electric shock injury fire or damage to the appliance The appliance is not intended for use by persons including children with reduced physical sensory or mental capabilities or lack of experience and knowledge unless they have been given supervision or instruction concerning use of the appliance by a person responsible for their safety Children should be properly supervised around the appliance Do not climb stand or hang on the appliance or door or allow children or animals to do so Do not climb into the appliance or allow children or animals to do so Death or serious injury could occur or the appliance could be damaged Be careful not to pinch fingers when opening and closing the door Be careful when opening and closing the door when children are in the area Open and close the doors with care Doors opened too quickly or forcefully may cause injury or damage to the appliance or surrounding equipment Do not use combustible spray or place volatile or flammable substances near the appliance They might catch fire Keep the area a
18. detector and then raise the pressure using nitrogen gas 140 PSIG Do not use R 134a or R 404A as a mixture with pressurized air for leak testing 3 Evacuation and Recharge 1 Attach a vacuum pump to the system Be sure the charging hoses are connected to both high and low side access valves IMPORTANT The vacuum level and vacuum pump may be the same as those for current refrigerants However the rubber hose and gauge manifold to be used for evacuation and refrigerant charge should be exclusively for POE oils 2 Turn on the vacuum pump Open the gauge manifold valves Never allow the oil in the vacuum pump to flow backwards 3 Allow the vacuum pump to pull down to a 29 9 Hg vacuum Evacuating period depends on pump capacity 4 Close the low side valve and high side valve on the gauge manifold 42 5 Disconnect the gauge manifold hose from the vacuum pump and attach it to a refrigerant service cylinder Remember to loosen the connection and purge the air from the hose See the nameplate for the required refrigerant charge Hoshizaki recommends only virgin refrigerant or reclaimed refrigerant which meets ARI Standard 700 latest edition be used 6 A liquid charge is required when charging an R 404A system to prevent fractionation and optional when charging an R 134a system Place the service cylinder on the scales if the service cylinder is not equipped with a dip tube invert the service cylinder then place it on
19. on DM MH and PH continue DH and DrH energize Comp ConFM and EvapFM de energize 1b Manually Initiated To initiate a manual defrost press and hold the lower button for 5 seconds dEF appears in the display MH and PH continue DH and DrH energize Comp ConFM and EvapFM de energize 2a Temperature Time Initiated Defrost Termination 1 DTh warms to 59 F 15 C dEF MH and PH continue DH and DrH de energize 3 min Comp ConFM delay timer starts 8 min EvapFM delay timer starts and 13 min temperature display delay timer starts 2 3 min Comp ConFM delay timer terminates Comp ConFM and EvapFM energize 3 5 min later EvapFM delay timer terminates and EvapFM energizes 4 5 min after EvapFM energizes 13 min temperature display delay timer terminates and cabinet temperature appears on DM 2b Manually Initiated Defrost Termination 1 DTh warms to 59 F 15 C MH and PH continue DH and DrH de energize 3 min Comp delay timer starts 3 min EvapFM delay timer starts and 13 min temperature display delay timer starts 2 3 min Comp and EvapFM delay timers terminate Comp ConFM and EvapFM energize 3 10 min after that 13 min temperature display delay timer terminates and cabinet temperature appears on DM Defrost Diagnosis 1a Temperature Time Initiated Has DTh cooled to 32 F 0 C or lower Before proceeding confirm DTh status See II D Thermistor Check Has 4 hr Comp cumulative run t
20. with or around the defrost thermistor on a freezer make sure the defrost Thermistor thermistor wire is not touching the defrost heater Control Module If three dashes appear on the display module when energized the compressor and w Remote display module are off To turn the compressor and display module on press and hold the Display upper and lower buttons until the temperature appears on the display NOTICE The three dashes must be cleared otherwise the compressor will not run and product will be lost C Door Reversal The appliance is provided with a cabinet design which after being delivered to the installation location permits changing of the door swing from left to right or right to left To change the door swing an HS kit from your local Hoshizaki distributor is required See the table below NOTICE Improper installation of the HS kit may result in the doors not closing completely and or the gaskets not sealing correctly For further details contact your local Hoshizaki distributor or Hoshizaki Technical Support at 1 800 233 1940 Door Type Right Hinge to Left Hinge 5045 Full Glass Left Hinge to Right Hinge HS 5046 Full Solid Half Solid Right Hinge to Left Hinge HS 3725 ur Sold Hall Sol Left Hinge to Right Hinge HS 3726 44 V Maintenance WARNING Move the power switch to the OFF position and unplug the appliance before performing maintenance to prevent electric shock or injury by mov
21. 1 HIN pezibieus HA p8z161909 NJde 3 uoneululo Isola s 1soJjeg p p A lu y umog 1002 Z Heya MOL 30uanbas 19279944 2 Freezer umog 000 dnue s Jeyeeu 1ejeuiued Hd Jeyeeu uoinuu HIN JOJOW 401eJode e N JdeA3 Joie lou 1s0JJop u LA Jejeeu ure1p HIG Jejeauy 1soJop Ha 015 JOUIGed YLD JOJOUI ue jesuepuoo N JUu02 Jossaidwoo dwog puabo pezifieue Hd peziB1eue HIN 21 Wadena p zi s u peziBjeue dwog 21 HIN i sugs oun sues 19w 1 I I qo dwog ujw g uo dwog uiu z jonuoo ul 41 0 4 14 UN 4 4 1 1 i 02 dnueis I 1 juiodies e oqe jnejep f4019e4 je I p 2 21 AE 01 uodas m l q SER owg una dwog dr 1 Stu ue JOW uni SWEM ulo 9521 4 Puan uy uou i dwog eAne nuino iy y pue i 01 8009 UL 9 0 4 2 Seyoees ULG 0 91 4 69 01 suem i 9 0 4 2 mojeq 10 1e S UL lieder de pezibieue Hd uo B Service Diagnosis WARNING The appliance should be diagnosed and repaired only by qualified service personnel to reduce the risk of death electric shock serious injury or fire Risk of electric shock Use extreme caution and exercise safe electrical practices Moving parts e g fan blade can crush and cut Keep hands clear Make sure all food zones are clean after the appliance
22. ABINET 2 LIGHT BK V EVAPORATOR i o FAN Bk DOOR SWITCH 4 RELAY La f la GND R w Ler EVAPORATOR FAN Yeo GND len 55 m START CAP HIGH PRESSURE COMPRESSOR 280 MFD COMPRESSOR AT Ten 10 w BK o WIRE COLOR CODE BK BLACK BR BROWN BU BLUE DBU DARK BLUE GR GREEN GY GRAY LBU LIGHT BLUE o ORANGE P PINK R RED V VIOLET W WHITE Y YELLOW 4 COMPRESSOR RELAY PROTECTOR BK BK 5 e R o 13 Ak E 12 START RELAY CONDENSER GND FAN BR BU GR i ER GND L High Pressure Switch 270 10 PSIG 190 20 PSIG 51 2b CR1B FS HS CR3B FS HS Auxiliary Code B 5 B and Later LI En E ITCH m NU e e h LLI HEATE e Control Module with 8 Integrated Display E ATE INET EF T THE THE n m FLOAT ITCH mu m I TCH T L E LE T Ln L HCF m e e B ABINET LIGHT E AT B 2 JOOR SWITCH ELA FA Le 4 TART H CH E E E 28 ITCH AT 1 EXTE L BK 1 E TECT e d oee l N 44 E EL TART ELA IRE L E BI BLACI D d E E n aL E FA 4 4 BLU
23. ConFM is not energized check ConFM fan blades for binding and motor winding continuity If Comp and ConFM are energized and the cabinet does not cool down check for a restriction in the refrigeration circuit correct TXV operation and correct refrigerant charge e HPS Activation Confirm ConFM is energized and fan blade turns freely Confirm condenser coil is not clogged or restricted Confirm there are no restrictions in the refrigeration circuit TXV and drier Let refrigeration circuit pressures equalize If HPS does not reset and pressures are equalized replace HPS If pressures are not equalized reclaim refrigerant and diagnose refrigeration circuit restriction 8 Cool Down Achieved CTh cools to 3 F 1 7 C below setpoint EvapFM and MH continue Comp and ConFM de energize Diagnosis Confirm Comp and ConFM de energize If not and Comp and ConFM were energized longer than 2 min check CTh status See II D Thermistor Check If CTh ohm reading is in range and Comp and ConFM continue longer than 2 min check for 115VAC at CM C1 R to neutral W If 115VAC is present replace CM If 115VAC is not present and Comp and ConFM continue check for 115VAC at CR 1 R If 115VAC is present replace CR 9 Defrost Cabinet temperature is displayed during defrost There is a 20 min minimum defrost time a 1 hr maximum defrost time and a 2 hr minimum defrost interval 1a Time lnitiated When 2 hr cumulative Comp run timer terminate
24. Confirm EvapFM de energizes If not check for 115VAC at CM F5 Y to neutral W If 115VAC is present replace CM 1b Manual Initiation After pressing the manual defrost button check the following 1 CM Diagnosis Confirm Comp and EvapFM icons turn off defrost icon turns on and dEF is displayed If not replace CM 2 DH and DrH Diagnosis Confirm DH and DrH energize If not check for 115VAC at CM H4 O to neutral W If 115VAC is not present replace CM If 115VAC is present check DT continuity If open let cool and reset If DT does not close replace DT If DT is closed check DH and DrH amp draw and continuity 3 Comp and ConFM Diagnosis Confirm Comp and ConFM de energize If not check for 115VAC at CM C1 R to neutral W If 115VAC is present replace CM If 115VAC is not present and Comp and ConFM continue check CR 1 R to neutral W If 115VAC is present replace CR 4 EvapFM Diagnosis Confirm EvapFM de energizes If not check for 115VAC at CM F5 Y to neutral W If 115VAC is present replace CM 2a Temperature Time Initiated Defrost Termination Has DTh warmed to 59 F 15 C If not yet confirmed confirm DTh status See ID Thermistor Check If DTh is in proper range DH de energizes and 3 delay timers start If DTh has not warmed to 59 F 15 C check DT and DH continuity Next check DH amp draw 1 3 min Comp delay timer terminates 3 min after DH de energizes confirm defrost icon turns
25. DRAIN HEATER 2 GY GY A 5 G DEFROST THERMOSTAT and later BK BK BK w 5 DEFROST HEATER 55 START CAP HIGH PRESSURE COMPRESSOR 280 MFD SWITCH INTERNAL AT 120V PROTECTOR L 0 uu BK BK oO R R 14 RZ 12 WIRE COLOR CODE COMPRESSOR RELAY STAR BK BLACK BR BROWN BU BLUE CONDENSER GND DBU DARK BLUE BR Ler GR GREEN 9 BK BU GY GRAY GND LBU LIGHT BLUE Lee o ORANGE S P PINK Defrost Thermostat R RED V VIOLET Cut out 120 F 5 F 49 C 3 C W WHITE Y YELLOW Cut in 70 F 5 F 21 C 3 C 6b CF1B FS and CF3B FS one section side Auxiliary Code A 5 to B 5 B CF1B HS Auxiliary Code A 5 to B 5 A CF3B HS one section side Auxiliary Code B 6 and Later ERIMETE HEATE Control Module with Integrated Display doa ITCH E ig il L ln bd cio LIGHT L vr l E T FA LE B ITCH R ELA FA gt AIN HEATE DEF T TER THE TAT W s BI EF T HEATE eJ es TART HIGH KE E E F ITCH INTERNAL AT I TECT Kal 1 zil eien me E IRE COL E 2 B TART BI BL R 5 B BLUE ENSE L E j 23 EE BK La LIG
26. E 7 EE INE High Pressure Switch E ere 300 10 PSIG SE 190 20 PSIG 52 3a CR2B FG Auxiliary Code A 5 Control Module with Remote Display Module 1157 6071 GND L N D w DISPLAY BK MODULE POWER SWITCH v v a o n o gt CONDENSATE Ov c e E v PUMP ii vu 9 8 x 5 BK M 600 o o GND Ler BK BR o FLOAT SWITCH CABINET LAMP ROCKER CABINET DISPLAY oC og i CABLE DEFROST CABINET 4 BR Ga BK W AE 4 THERM THERM L g l BALLAST LBU BU Ge a FL LIGHTO FL LIGHT O D BR BR BK LBU w BU 80 k 8 olo 00 000 DOOR SWITCH DOOR SWITCH am 4 DOOR OPEN DOOR OPEN Bu N N b ad 4 8 y CONTROL Bk MODULE t e Gs DBU o o 4 3 iL L H N F 2 3 4 5 6 EVAPORATOR 25675 0 DOOR SWITCH amp A RELAY BK EY BK BK GND EVAPORATOR GR BK FAN 4 BK EN BK GND R w EVAPORATOR FAN GR BK 24 BK w 4 GND Je T w 4 w 5 77 START CAP seh PRESSURE COMPRESSOR 280 MFD RM COMPRESSOR AT WRON PROTECTOR 10 e BK R o 0
27. ER 1 2 DOOR ONLY BR BROWN BK BK BU 0 BU BLUE GND Pa DBU DARK BLUE aie SEE GR GREEN MULLION HEATER 172 DOOR ONLY GY GRAY BK 0 0 LBU LTOGHT BLUE MTT AT SEN o ORANGE x ui a PINK High Pressure Switch R RED V VIOLET Cut out 270210 PSIG W WHITE Y YELLOW Cut in 190 20 PSIG 55 4b CR2B FS and CR3B FS Auxiliary Code B 5 C and Later CR2B HS Auxiliary Code A 5 to B 5 B and Later CR3B HS Auxiliary Code B 5 D and Later il Control Module vvith ENSATE Integrated Display AE K L L ITCH ITCH S TROL CL LE BL K AB INE LIGHT L H F E AE TEL n ls ET I E LIGHT E AT R d BI E AT an Le r pe y ldi PRES E E 280 MF EXTERNAL Skopi TECT 2 o 13 M ri C NOW o JL E EL TART LLION HEATE ELA IRE OL E ENSER ND el REE BI BLACI F l HESTE D BL E 2 Tv A LUE le GIES EE LLION HEATE 1 LBY LIGHT BLUE h ORANGE 2 High Pressure Switch IOLET HITE Cut out 300210 PSIG ELL Cut in 190 20 PSIG 56 5a CF1B FG Auxiliary Code B 5 C and Earlier Control Module with Remote Displ
28. HT BLUE ab GE High Pressure Switch Defrost Thermostat 490 10 PSIG 120 F 5 F 49 C 3 C o o 370 20 PSIG Cut in 70 F 5 F 21 C3 C 7 CF2B FG FGY ABINET DEFROST THE THE m i L ERIMETER HEATE LLION HEATE E Br ITCH T L LLION HEATE LE THO RT NTE T L HYCE LLION HEATE 1 KTB k KCI T uk EE ux KI ENSATE T L INET Eg B LIGHT ERN derum LLAST L8 FLOAT SWITCH m dri ti TB K34 3 JFL LI mob 7 ABINET LA KE ITCH T T8 KB3 KDI DIEN SR LB ITCH ITCH E iH Ly E AT F 11 F ITCH ELA E AT FA IRE B LB High Pressure Switch Defrost Thermostat 490 10 PSIG 120 F 45 F 49 C 3 C 370 20 PSIG 70 F 5 F 21 C 3 C 8a CF2B FS and CF3B FS two section side Auxiliary Code A 5 to B 5 A CF2B HS Auxiliary Code A 5 to B 5
29. Hoshizaki America Inc Commercial Series Refrigerated Kitchen Equipment Models Reach In B Series SERVICE MANUAL A Superior Degree of Reliability www hoshizaki com Number 73183 Issued 3 23 201 I Revised 8 5 2014 WARNING Only qualified service technicians should install and service the appliance To obtain the name and phone number of your local Hoshizaki Certified Service Representative visit www hoshizaki com No service should be undertaken until the technician has thoroughly read this Service Manual Failure to service and maintain the appliance in accordance with this manual will adversely affect safety performance component life and warranty coverage Proper installation is the responsibility of the installer Product failure or property damage due to improper installation is not covered under warranty Hoshizaki provides this manual primarily to assist qualified service technicians in the service and maintenance of the appliance Should the reader have any questions or concerns which have not been satisfactorily addressed please call send an e mail message or write to the Hoshizaki Technical Support Department for assistance Phone 1 800 233 1940 770 487 2331 Fax 1 800 843 1056 770 487 3360 E mail techsupport hoshizaki com HOSHIZAKI AMERICA INC 618 Highvvay 74 South Peachtree City GA 30269 Attn Hoshizaki Technical Support Department Web Site www hoshizaki
30. M and EvapFM freezer de energize Check for 115VAC at CM C1 R to neutral W for Comp and ConFM then at CM F5 Y freezer to neutral VV for EvapFM If dEF is displayed and 115VAC is present replace CM 9 Freezer Confirm DH energizes Check for 115VAC at CM H4 O to neutral VV If dEF is displayed and 115VAC is not present replace CM 27 10 Check that the components restart after defrost termination Refrigerator DTh reaches 40 F 4 4 C Comp and ConFM CM C1 R energize If not check DTh status See II D Thermistor Check If DTh ohm reading is in proper range and Comp and ConFM do not energize replace CM Freezer DTh reaches 59 F 15 C 3 min later Comp and ConFM CM C1 R and EvapFM CM F5 Y energize If not check DTh status See II D Thermistor Check If DTh ohm reading is in proper range and Comp ConFM or EvapFM do not energize replace CM 12 min after Comp ConFM and EvapFM energize cabinet temperature appears on CM If components fail to start replace CM Legend CM control module Comp compressor ConFM condenser fan motor CTh cabinet thermistor DH defrost heater DS door switch DTh defrost thermistor EvapFM evaporator fan motors D Thermistor Check The cabinet thermistor is used for cabinet temperature control and the defrost thermistor is used for defrost cycle initiation and termination Thermistor resistance varies depending on temperature The control module monitors t
31. al Defrost Check Press and hold the lower button until JEF appears on DM 8 Confirm Comp ConFM and EvapFM freezer de energize Check for 115VAC at CM C1 R to neutral W for Comp and ConFM then at CM F6 BK freezer to neutral W for EvapFM If dEF is displayed and 115VAC is present replace DM and CM with HS kit 9 Freezer Confirm DH energizes Check for 115VAC at CM H4 BK to neutral W If dEF is displayed and 115VAC is not present replace DM and CM with HS kit 26 10 Check that the components restart after defrost termination Refrigerator DTh reaches 40 F 4 4 C Comp and ConFM CM C1 R energize If not check DTh status See II D Thermistor Check If DTh ohm reading is in proper range and Comp and ConFM do not energize replace DM and CM with HS kit Freezer DTh reaches 59 F 15 C 3 min later Comp and ConFM CM C1 R and EvapFM CM F6 BK energize If not check DTh status See II D Thermistor Check If DTh ohm reading is in proper range and Comp ConFM or EvapFM do not energize replace DM and CM with HS kit 10 min after Comp ConFM and EvapFM energize confirm cabinet temperature appears on DM If components fail to start replace DM and CM with HS kit Legend CM control module Comp compressor ConFM condenser fan motor CTh cabinet thermistor DH defrost heater DM display module DS door switch DTh defrost thermistor EvapFM evaporator fan motors 2 Control Module with Inte
32. ay Module ERIMETER HEATE ASLE EF il HEATE High Pressure Switch 490410 PSIG E L E BI BLACI B BLUE B ARK BLUE REE LB LIGHT BLUE VANGE IN E LET HITE ELL 37020 PSIG I Defrost Thermostat 120 F 5 F 49 C 3 C 70 F 5 F 21 C 3 C 5b CF1B FG FGY Auxiliary Code B 5 D and Later 1 L E ITCH ERIMETE HEATE Control Module with Integrated Display ENSATE FLOAT m Lh SER Be ri 55 ABINET LIGHT E sss ER LIGHT BALLAST 13 p FL LIGHTS L T L ITCH DE E LE Eri L H e FA 3 e 1 IT E AT ELA Ig Br HEATE kk EF T THE TAT Bk e BE L EF T HEATE e MES KR TAST HIGH E E F ITCH INTERNAL AT TECT E et ELA JI E L E BI BLACI ti BL E ENSE
33. ay Scale F or C a Control Module with Remote Display Module To change the temperature display scale follow the steps below 1 Press the upper button for 5 sec The current setting is displayed 2 Press the upper button to change the scale After a few sec the display returns to the current cabinet temperature and the setting is saved The factory default is F 36 b Control Module with Integrated Display To change the temperature display scale follow the steps below 1 Press and hold both the up and down buttons for 5 sec PAS appears briefly in the display then 000 appears 2 Press the up button to change the display to 001 3 Press the SC button EHE appears in the display Press the up or down button until diS is displayed 4 Press the SC button CFu appears in the display Press the SC button again The current temperature display scale setting appears 5 Press the up or down button to change the temperature display scale 6 Press the SC button to save the setting Wait 1 min or press the manual defrost button twice to return to the temperature display C Defrost 1 Control Module with Remote Display Module To initiate a manual defrost press and hold the lower button for 5 sec dEF appears in the display 2 Control Module with Integrated Display To initiate a manual defrost press the manual defrost button briefly The defrost icon and dEF appear in the display 37 D Alarm Sa
34. com NOTE To expedite assistance all correspondence communication MUST include the following information Model Number e Serial Number Complete and detailed explanation of the problem IMPORTANT This manual should be read carefully before the appliance is serviced Read the warnings and guidelines contained in this manual carefully as they provide essential information for the continued safe use service and maintenance of the appliance Retain this manual for any further reference that may be necessary CONTENTS Important sale lee E EE 5 l General een e E 8 Ar Consiueion 8 B Refrigeration Fl w c E 9 Il Sequence of Operation and Service Diagnose 10 A Sequence of Operation Flow Charts 10 IN Iiic PM 10 EG NE UT 11 BSE DIAC c eee Y 12 1a Refrigerator Control Module with Remote Display Module 14 1b Refrigerator Control Module with Integrated Display 16 2a Freezer Control Module with Remote Display 2222 18 2b Freezer Control Module with Integrated Display 22 C Control Module CE T 26 1 Control Module with Remote Display Module 26 2 Control Module with Integrated Display 27 DE Hebeler a a a aaa eege saka gb 28 E Diagnostic Tables insa 29 ENO Ce 29 2 Evaporator Fro
35. d CM control module Comp compressor ConFM condenser fan motor CR compressor relay CTh cabinet thermistor DH defrost heater DM display module DrH drain heater DSR door switch relay DT defrost thermostat DTh defrost thermistor EvapFM evaporator fan motors HPS high pressure switch MH mullion heater PH perimeter heater TXV thermostatic expansion valve 21 2b Freezer Control Module with Integrated Display 7 Startup Cool Down MH and PH energize There is a slight delay then Comp ConFM and EvapFM energize Cabinet temperature appears on display Once DTh cools to 32 F 0 C 4 hr Comp cumulative run timer starts a MH and PH Diagnosis Confirm MH and PH energize Check for 115VAC at MH and PH If 115VAC is not present confirm power supply and continuity of power switch If 115VAC is present check amp draw of MH and PH If an amp reading is not present check continuity of MH or PH If open replace MH or PH b CM Diagnosis Cabinet temperature appears on display If not check for 115VAC at CM L2 BK to CM N3 neutral W If 115VAC is not present confirm wiring connections are secure on CM L2 BK power supply and CM N3 W neutral If 115VAC is present and display is off replace CM c EvapFM Diagnosis Confirm EvapFM energizes If not confirm doors are closed and DS engaged Next check for 115VAC at DSR 8 LBU to DSR 7 neutral W If 115VAC is not present check DS continuity If DS is engaged and contacts a
36. e CM and DM with HS kit If 115VAC is not present and Comp and ConFM continue check for 115VAC at CR 1 R If 115VAC is present replace CR 9 Defrost dEF is displayed during defrost There is a 20 min minimum defrost time a 1 hr maximum defrost time and a 2 hr minimum defrost interval 1a Temperature Initiated DTh cools to 8 6 F 13 C EvapFM and MH continue Comp and ConFM de energize 1b Manually Initiated To initiate a manual defrost press and hold the lower button for 5 seconds dEF appears in the display If energized Comp and ConFM de energize 2 Defrost Termination DTh warms to 40 F 4 4 C EvapFM and MH continue Comp and ConFM energize 2 min temperature display delay timer starts 2 min later cabinet temperature appears on DM Defrost Diagnosis a Defrost Initiation Has DTh cooled to 8 6 F 13 C or lower Confirm DTh status See II D Thermistor Check If DTh is in proper range or manual defrost initiated confirm Comp and ConFM de energize If not check for 115VAC at CM C1 R to neutral W If 115VAC is present and DTh is within proper range replace CM and DM with HS kit If there is no voltage at CM C1 R to neutral W and Comp and ConFM do not de energize check for 115VAC at CR 1 R to neutral W If 115VAC is present at CR 1 R to neutral W and DTh is within proper range replace CR b Defrost Termination Has DTh warmed to 40 F 4 4 C If not yet confirmed confi
37. ect or replace as needed Unit cycles 5 min on 5 min off Defrost thermistor disconnected shorted or open Check connection and continuity Reconnect or replace as needed Unit cycles on and off with cabinet thermistor The compressor de energizes if voltage protection operates The voltage safeties automatically reset when voltage is corrected First try obvious corrections such as closing doors and cleaning the condenser Automatically resets when temperature returns to normal Automatically resets when temperature returns to normal Check the connections at the control module and the display module If connections are good the control module and display module must be replaced The unit operates on a set 5 min on 5 min off cycle until communication is restored Unit compressor off Press and hold the upper and lower buttons until the temperature appears on the display 2 Control Module with Integrated Display Alarm Signals Alarm Code Corrective Action Reset Details Cabinet Thermistor Malfunction Alarm Beeps for 10 sec then silent for 50 sec To silence the alarm press and release the up button Cabinet thermistor has failed Appliance eycles 5 min on 5 min off Defrost Thermistor Malfunction Alarm Beeps for 10 sec then silent for 50 sec To silence the alarm press and release the up button Defrost thermistor has failed Appliance cycles on and off with cabinet therm
38. erature drops to an acceptable range There is a minimum 2 min Comp on time and 2 min Comp off time 1 2 3 4 5 6 Move the power switch to the OFF position Unplug the appliance from the electrical outlet Remove the control box cover Plug the appliance back into the electrical outlet Move the power switch to the ON position wae 2 a Confirm 115VAC at the power switch On 3 section models also confirm proper supply voltage at the receptacle box 115VAC for refrigerator 208 230VAC for freezer Continue to the appropriate section ILB 1a Refrigerator Control Module with Remote Display Module Il B 1b Refrigerator Control Module with Integrated Display ILB 2a Freezer Control Module with Remote Display Module ILB 2b Freezer Control Module with Integrated Display 1a Refrigerator Control Module with Remote Display Module 7 Startup Cool Down EvapFM and MH energize There is a slight delay then Comp and ConFM energize Cabinet temperature appears on DM a EvapFM Diagnosis Confirm EvapFM energizes If not confirm doors are closed and DS engaged Next check for 115VAC at DSR 8 LBU to 7 neutral W If 115VAC is not present check DS continuity If DS is engaged and contacts are open replace DS If 115VAC is present check for 115VAC at DSR 4 DBU to neutral W If 115VAC is not present check for 115VAC at DSR 6 BK to neutral W If 115VAC is present at DSR 6 BK to neutral W and n
39. euun ejep 9NUIUI G JEU SI eunjeredujej olyeuluL 50 USYM SJJEJS 12W ejep ejdsip aunyesodwi9 apnulu g y Ajpenuew payeniul soap USYM Jon Aejap aynulw E zaw SI eunjejeduue uone l Ll 180 UBYM SVEIS 1euun ejop N Jde 3 auw 6 Aejdsig ajnpoy j031u023 42w SI lnyel d l 1 150 UBYM sues Jeuun Aejap ejdsip ainyesodwe eynuiw E y lenueul Dee lut J5014jSP USYM awy 3JNUIUI 6 zaw SI einjejeduuej UONEUIWJ9 50 USYM syes Aejap NHdeng einuiu g 6 ejdsig 3j0ua3yY uin 10002 OW SI UONBUIUIJE 501 UBYM sues Ael p NJuo9 duJo2 ue I oun JSOOP wnwxew JUL QUN JSOUJOP WNUWIU W UILU G p seziBieue ep duo u ym sugs JAW YO duo uwnuwlulu uru z o 8 21 duo u ym syeis wuy UO dwog wnwuju 10 2 q 9 SH uo peuedo si Joop 1eddn uaym pue sj pow S4 uo peuedo si Joop USYM 21 NHderg e S1ON 1eye 21 Wadena 2 N4Hdeng Aejap Jaye p zi l u yJuo5 2 N4U0D 1eye 21 dwog 21 dwog peziBieue ep N4UOD p zi s u p HIG 2 Hd 2 dwog p zi s u p HA 21 HIN 2 Hd Hd 21 HAG 21 HIN 2
40. feties Alarm signals are designed to protect the appliance and food product These alarms give information or warnings in the event the appliance is operating out of acceptable parameters Should one of the alarms occur follow the instructions in the table below to address the alarm The alarm code flashes once every second with audible alarm To silence the alarm press and release the upper button 1 Control Module with Remote Display Module Alarm Signals Alarm Code Corrective Action Reset Details Cabinet Thermistor Malfunction Alarm ech Cabinet thermistor has failed Defrost Thermistor Malfunction Alarm Defrost thermistor has failed High Voltage Alarm 135SVAC 5 or more UH Lo Low Voltage Alarm 96VAC 5 or less High Temperature Alarm Note When power is turned on a high temperature alarm may occur Refrigerator Cabinet temperature has exceeded the setpoint temperature by 10 F 5 6 C for more than 2 hr Freezer Cabinet temperature has exceeded the setpoint temperature by 27 F 15 C for more than 2 hr Low Temperature Alarm Refrigerator amp Freezer Cabinet temperature has remained below the setpoint temperature by 8 F 4 4 C for more than 2 hr Communication Error Alarm Communication between the control module and the display module has been interrupted or disconnected Compressor Off Cabinet thermistor disconnected shorted or open Check connection and continuity Reconn
41. grated Display Before replacing CM that does not show a visible defect and that you suspect is bad conduct the following check procedure This procedure will help you verify your diagnosis Always choose a neutral VV to establish a good neutral connection when checking high voltages Also confirm there is a good power supply and neutral connection to CM 115VAC at CM L2 BK to CM N3 VV Alarm Reset To silence the alarm press and release the up button vvith povver on For alarm information see 11 Alarm Safeties Startup Cool Dovvn 1 Check all wiring connections Confirm the CTh and DTh are properly connected 2 Move the power switch to the ON position 3 Check for 115VAC at CM L2 BK to CM N3 neutral W If 115VAC is not present check power supply wire connections and power switch 4 Check that cabinet temperature is displayed If not replace CM 5 Freezer Check that EvapFM is energized Make sure doors are closed and DS engaged Next check for 115VAC at CM F5 Y to neutral If 115VAC is not present replace CM 6 Check that Comp and energize If not check CTh status See II D Thermistor Check If CTh ohm reading is in proper range check for 115VAC at CM C1 R to neutral W If 115VAC is not present replace CM Defrost 7 Manual Defrost Check Press the manual defrost button briefly If on Comp and EvapFM icons turn off Defrost icon turns on and dEF is displayed 8 Confirm Comp ConF
42. he thermistors to control system operation No adjustment is required In the event the cabinet thermistor reading is out of range E1 alarm the compressor operates on a fixed time basis of 5 min on and 5 min off In the event the refrigerator defrost thermistor reading is out of range E2 alarm defrost initiation occurs every 4 hr of cumulative compressor run time and terminates on 20 min minimum defrost timer In the event the freezer defrost thermistor reading is out of range E2 alarm defrost initiation occurs every 4 hr of cumulative compressor run time and terminates based on cabinet thermistor temperature To check thermistor resistance follow the steps below 1 Move the power switch to the OFF position then unplug the appliance 2 Remove the control box cover 3 Disconnect and remove the thermistor in question 4 Immerse the thermistor sensor portion in a glass containing ice and water for 2 to 3 min 5 Check the resistance between the wires at the thermistor connector Normal reading is within 16 0 to 16 7 kO If outside the normal reading replace the thermistor 6 Reconnect and replace the thermistor in its correct position See IV B Important Notes for Component Replacement 7 Plug the appliance back in Move the power switch to the ON position 28 E Diagnostic Tables Check for correct appliance installation per the instruction manual and proper voltage per appliance nameplate 1 Not Co
43. heck for a restriction in the refrigeration circuit correct TXV operation and correct refrigerant charge e HPS Activation Confirm ConFM is energized and fan blade turns freely Confirm condenser coil is not clogged or restricted Confirm there are no restrictions in the refrigeration circuit TXV and drier Let refrigeration circuit pressures equalize If HPS does not reset and pressures are equalized replace HPS If pressures are not equalized reclaim refrigerant and diagnose refrigeration circuit restriction 18 8 Cool Down Achieved CTh cools to 3 F 1 7 C below setpoint EvapFM MH and PH continue Comp and ConFM de energize Diagnosis Confirm Comp and ConFM de energize If not and Comp and ConFM were energized longer than 2 min check CTh status See II D Thermistor Check If CTh ohm reading is in range and Comp and ConFM continue longer than 2 min check for 115VAC at CM C1 R to neutral W If 115VAC is present replace CM and DM with HS kit If 115VAC is not present and Comp and ConFM continue check for 115VAC at CR 1 R to neutral W If 115VAC is present replace CR 9 Defrost dEF is displayed during defrost There is a 5 min minimum defrost time and a 1 hr maximum defrost time 1a Temperature Time Initiated DTh cools to 32 F 0 C 4 hr cumulative Comp run timer starts Once DTh is at or below 32 F 0 C with 4 hr cumulative Comp run timer satisfied Comp energized more than 4 hrs dEF appears
44. iated Defrost Termination 1 DTh warms to 59 F 15 C Defrost icon dEF MH and PH continue DH and DrH de energize 3 min Comp ConFM and EvapFM delay timer starts and 15 min temperature display delay timer starts 2 3 min Comp ConFM and EvapFM delay timer terminates dEF MH and PH continue Defrost icon turns off Comp and EvapFM icons turn on and Comp ConFM and EvapFM energize 3 12 min later 15 min temperature display timer terminates dEF is replaced by cabinet temperature 23 Defrost Diagnosis 1a Temperature Time Initiation Has DTh cooled to 32 F 0 C or lower Before proceeding confirm DTh status See II D Thermistor Check Has 4 hr Comp cumulative run timer satisfied 1 CM Diagnosis Confirm defrost icon turns on dEF is displayed and Comp and EvapFM icons turn off If not replace CM 2 DH and DrH Diagnosis Confirm DH and DrH energize If not check for 115VAC at CM H4 O to neutral VV If 115VAC is not present replace CM If 115VAC is present check DT continuity If open let cool and reset If DT does not close replace DT If DT is closed check DH and DrH amp draw and continuity 3 Comp and ConFM Diagnosis Confirm Comp and ConFM de energize If not check for 115VAC at CM C1 R to neutral W If 115VAC is present replace CM If 115VAC is not present and Comp and ConFM continue check CR 1 R to neutral W If 115VAC is present replace CR 4 EvapFM Diagnosis
45. imer satisfied 1 DM Diagnosis Confirm dEF appears on DM If not replace CM and DM with HS kit 2 DH and DrH Diagnosis Confirm DH and DrH energize If not check for 115VAC at CM H4 BK to neutral W If 115VAC is not present replace CM and DM with HS kit If 115VAC is present check DT continuity If open let cool and reset If DT does not close replace DT If DT is closed check DH and DrH amp draw and continuity 3 Comp and ConFM Diagnosis Confirm Comp and ConFM de energize If not check for 115VAC at CM C1 R to neutral W If 115VAC is present replace CM and DM with HS kit If 115VAC is not present and Comp and ConFM continue check CR 1 R to neutral If 115VAC is present replace CR 4 EvapFM Diagnosis Confirm EvapFM de energizes If not check for 115VAC at CM F6 BK to neutral W If 115VAC is present replace CM and DM with HS kit 1b Manually Initiated After pressing the lower button for 5 sec check the following 1 CM and DM Diagnosis Confirm dEF appears on DM If not replace CM and DM with HS kit 2 DH and DrH Diagnosis Confirm DH and DrH energize If not check for 115VAC at CM H4 BK to neutral W If 115VAC is not present replace CM and DM with HS kit If 115VAC is present check DT continuity If open let cool and reset If DT does not close replace DT If DT is closed check DH and DrH amp draw and continuity 3 Comp and ConFM Diagnosis Confirm Comp and ConFM de energize If n
46. ing parts To reduce the risk of electric shock do not touch the power switch or plug with damp hands Before performing maintenance move all foods into another clean refrigerator or freezer 1 Condenser Check the condenser once a year and use a brush or vacuum cleaner to clean the condenser as required 2 Power Supply Connection If a plug power cord or receptacle three section models is damaged replace it Be sure to connect the ground wire 45 VI Preparing the Appliance for Periods of Non Use WARNING When preparing the appliance for long storage prevent the doors from closing to reduce the risk of children getting trapped To reduce the risk of electric shock do not touch the attachment plug or power switch with damp hands When shutting down the appliance for more than one week move the power switch to the OFF position and unplug the appliance Do not plug in unplug the appliance to start stop operation Make sure the power switch is in the OFF position before plugging in or unplugging the appliance to reduce the risk of electric shock 1 Before shutting down the appliance move the stored food into another refrigerator or freezer 2 Reach over the front panel and move the power switch to the OFF position The appliance will shut down 3 Unplug the appliance IMPORTANT When preparing the appliance for long storage clean the cabinet interior door gaskets and shelves
47. is serviced NOTICE The appliance is not intended for outdoor use Normal operating ambient temperature must be within 45 F to 100 F 7 C to 38 C The appliance must not be located next to ovens grills or other high heat producing equipment The appliance must not be located in a corrosive environment The appliance must be a minimum of 4 11 cm from side walls A minimum of 10 25 cm overhead clearance must be provided for proper ventilation The diagnostic procedure is a sequence check that allows you to diagnose the electrical system and components Before proceeding check for correct installation and proper voltage per nameplate Always choose a neutral W to establish a good neutral connection when checking high voltages If the display is in alarm see ID Alarm Safeties IMPORTANT The maximum allowable voltage variation is 10 percent of the nameplate rating 115VAC is used as a reference voltage when checking voltage to components Voltage may vary depending on power supply 12 1 Factory Default Settings a Temperature Settings Refrigerator 36 F 2 C Freezer 4 F 20 C b Temperature Display Scale F For further details see IC Control Module Check or III Controls and Adjustments Note e When exposed to high temperatures a high temperature alarm Hi may occur at startup To silence the alarm press and release the upper button Alarm automatically resets when temp
48. istor High Temperature Alarm Beeps for 10 sec then silent for 50 sec To silence the alarm and clear Hi from the display press and Refrigerator Cabinet temperature has release the up button The alarm icon stays on remained above 57 F 13 9 C for more Automatically resets when temperature returns to Hi than 2 hr normal Freezer Cabinet temperature has remained above 26 F 3 3 C for more than 2 hr Low Temperature Alarm Beeps for 10 sec then silent for 50 sec To silence the alarm and clear Lo from the display press and Refrigerator Cabinet temperature has release the up button The alarm icon stays on remained below 26 F 3 3 C for more than 2 hr Automatically resets when temperature returns to normal Freezer Cabinet temperature has remained below 23 F 30 6 C for more than 2 hr 39 E Safety Devices 1 Compressor External or Internal Protector If combined temperature amperage value is above the limit specified by the compressor manufacturer the compressor external or internal protector operates independently to turn off the compressor The compressor external or internal protector de energizes the compressor until the temperature amperage value returns to an acceptable level e f the condenser fan motor is operating and the compressor is off it is most likely that the compressor external or internal protector opened If both the compressor and condenser fan motor are off it is mos
49. lay Fig 2 32 b Control Module with Remote Display Module Connections All models are pretested and factory set NOTICE The control module is fragile handle very carefully Do not change wiring and connections Never misconnect terminals Do not short out power supply to test for voltage Refrigerator Control Module Freezer Control Module To Display Module La Ee Module 5 Display Cable Display Cable Defrost Thermistor Defrost Thermistor Cabinet Thermistor Cabinet Thermistor i se i C LLHIHNIF C LLHMNF 123456 123456 Fi F6 Evaporator Fan N5 Neutral W Motor BK L3 Power Supply BK N5 Neutral W H4 Defrost Heater BK L3 Power Supply BK C1 Compressor R C1 Compressor R Fig 3 33 2 Control Module with Integrated Display All models are pretested and factory set NOTICE The control module is fragile handle very carefully Do not change wiring and connections Never misconnect terminals Do not short out power supply to test for voltage a Display Icons Control Module Icons Compressor Compressor running Defrost Appliance is in defrost cycle See II B Service Diagnosis for details Evaporator Fan Motor Icon is Applicable to Freezers Only Evaporator fan motor is running Evapora
50. nFM is not energized check ConFM fan blades for binding and motor winding continuity 20 2 8 min EvapFM delay timer terminates 5 min after Comp and ConFM energize confirm EvapFM energizes If not confirm doors are closed and DS engaged Next check for 115VAC at CM F6 BK to neutral W If 115VAC is not present replace CM and DM with HS kit If 115VAC is present check for 115VAC at DSR 4 DBU to neutral W If 115VAC is not present check for 115VAC at DSR 6 BK to neutral W If 115VAC is present on DSR 6 Bk to neutral W and not on DSR 4 DBU to neutral W replace DSR If 115VAC is present on DSR 4 DBU to neutral W and EvapFM is not energized check EvapFM blades for binding and EvapFM continuity 3 13 min temperature display delay timer terminates 5 min after EvapFM energizes dEF is replaced by cabinet temperature on display If not replace CM and DM with HS kit 2b Manually Initiated Defrost Termination Has DTh warmed to 59 F 15 C If not yet confirmed confirm DTh status See II D Thermistor Check If DTh is in proper range DH de energizes and 3 delay timers start If DTh has not warmed to 59 F 15 C check DT and DH continuity Next check DH amp draw 1 3 min Comp ConFM and EvapFM delay timers terminate 3 min after DH de energizes confirm Comp ConFM and EvapFM energize If Comp and ConFM do not energize confirm cabinet temperature is warm enough for Comp and ConFM operation
51. off Comp icon turns on and Comp and ConFM energize If not confirm cabinet temperature is warm enough for Comp and ConFM operation Next check for 115VAC at CM C1 R to neutral W If 115VAC is not present check CTh status See II D Thermistor Check If CTh ohm reading is in proper range replace CM If 115VAC is present check for 115VAC at CR 4 BK to neutral W and CR 1 R to neutral W If 115VAC is present at CR 4 BK to neutral W but not at CR 1 R to neutral W replace CR If 115VAC is present at CR 1 R and Comp or ConFM are not energized check Comp start components Comp protector internal on 1 section external on 2 section and Comp motor winding continuity If ConFM is not energized check ConFM fan blades for binding and motor winding continuity 24 2 7 min EvapFM delay timer terminates note that the 7 min EvapFM delay time is a maximum if the defrost thermistor cools to 25 F 3 9 C before the 7 min EvapFM delay timer terminates EvapFM icon turns on and EvapFM energizes 4 min after Comp and ConFM energize confirm EvapFM icon turns on and EvapFM energizes f not confirm doors are closed and DS engaged Next check for 115VAC at CM F5 Y to neutral W If 115VAC is not present replace CM If 115VAC is present check for 115VAC at DSR 4 DBU to neutral VV If 115VAC is not present check for 115VAC at DSR 6 BK to neutral VV If 115VAC is present on DSR 6 BK to neutral W and n
52. oling three section receptacle box only top receptacles have power b ive 2 Cord and Plug a Loose connection On three section model check receptacle box cord and plug and one section and two section cords and plugs 77777 rer ET 5 Control Module a In alarm or shown on display module on models with remote display See III D Alarm Safeties and IC module 6 Door Switch a Not engaged b Defective Defective 7 Door Switch Relay a Loose connection b Defective 9 High Pressure Switch a Dirty condenser b Ambient temperature too warm c Condenser fan motor not operating d Refrigerant overcharge e Refrigerant lines or components restricted f Defective 11 Compressor Protector a Dirty condenser Condenser fan motor not operating Compressor capacitor or start relay defective Defective 12 Compressor a Defective 13 Condenser Dirty 14 Evaporator a Clogged or frozen See 2 Evaporator Frozen Up 15 Refrigerant Refrigerant Lines a Refrigerant leak b Refrigerant lines restricted 29 2 Evaporator Frozen Up 2777581 d NES i b Component restriction TXV cap tube drier 3a Defrost Control Module with Remote Display Module Refrigerator Defrost Fails to Initiate Possible Cause 1 Defrost Thermistor Confirm a Defrost initiation temperature 8 6 F 13 C not achieved See 1 Not DTh status See II D Thermistor Cooling Check b Out of posi
53. ot check for 115VAC at CM C1 R to neutral W If 115VAC is present replace CM and DM with HS kit If 115VAC is not present and Comp and ConFM continue check CR 1 R to neutral W If 115VAC is present replace CR 4 EvapFM Diagnosis Confirm EvapFM de energizes If not check for 115VAC at CM F6 BK to neutral W If 115VAC is present replace CM and DM with HS kit 2a Temperature Time Initiated Defrost Termination Has DTh warmed to 59 F 15 C If not yet confirmed confirm DTh status See ID Thermistor Check If DTh is in proper range DH de energizes and 3 delay timers start If DTh has not warmed to 59 F 15 C check DT and DH continuity Next check DH amp draw 1 3 min Comp delay timer terminates 3 min after DH de energizes confirm Comp and ConFM energize If not confirm cabinet temperature is warm enough for Comp and ConFM operation Next check for 115VAC at CM C1 R to neutral W If 115VAC is not present check CTh status See II D Thermistor Check If CTh ohm reading is in proper range replace CM and DM with HS kit If 115VAC is present check for 115VAC at CR 4 BK to neutral W and CR 1 R to neutral W If 115VAC is present at CR 4 BK to neutral W but not at CR 1 R to neutral W replace CR If 115VAC is present at CR 1 R and Comp or ConFM are not energized check Comp start components Comp protector internal on 1 section external on 2 section and Comp motor winding continuity If Co
54. ot at DSR 4 DBU to neutral W replace DSR If 115VAC is present at DSR 4 DBU to neutral W check EvapFM blades for binding and EvapFM continuity b MH Diagnosis Confirm MH energizes Check for 115VAC at MH If 115VAC is not present confirm power supply and continuity of power switch If 115VAC is present check amp draw of MH If an amp reading is not present check the continuity of MH If open replace MH c CM and DM Diagnosis Cabinet temperature appears on DM If not check for 115VAC at CM L3 BK to CM N5 neutral W If 115VAC is not present check power switch power cord connections and breaker fuse Confirm wiring connections are secure for both CM L3 BK power supply and CM N5 W neutral If 115VAC is present and DM is off confirm display cable connection is secure If DM is still off replace CM and DM with HS kit d Comp and ConFM Diagnosis Confirm Comp and ConFM energize If not check for 115VAC at CM C1 R to neutral W If 115VAC is not present at CM C1 R to neutral W check CTh status See II D Thermistor Check If CTh ohm reading is in proper range replace CM and DM with HS kit If 115VAC is present at CM C1 R to neutral W check continuity of HPS If open allow time for HPS to reset If HPS does not reset see e HPS Activation below If HPS is closed check for 115VAC at CR 5 GY to CR 6 neutral W If 115VAC is present check for 115VAC at CR 1 R to neutral W If 115VAC is not pre
55. ot on DSR 4 DBU to neutral W replace DSR If 115VAC is present on DSR 4 DBU to neutral VV and EvapFM is not energized check EvapFM blades for binding and EvapFM continuity 3 18 min temperature display delay timer terminates 11 min after EvapFM energizes dEF is replaced by cabinet temperature on display If not replace CM 2b Manually Initiated Defrost Termination Has DTh warmed to 59 F 15 C If not yet confirmed confirm DTh status See II D Thermistor Check If DTh is in proper range DH de energizes and 2 delay timers start If DTh has not warmed to 59 F 15 C check DT and DH continuity Next check DH amp draw 1 3 min Comp ConFM and EvapFM delay timers terminate 3 min after DH de energizes confirm defrost icon turns off Comp and EvapFM icons turn on and Comp ConFM and EvapFM energize If not confirm cabinet temperature is warm enough for Comp and ConFM operation Comp and ConFM Check for 115VAC at CM C1 R to neutral W If 115VAC is not present check CTh status See II D Thermistor Check If CTh ohm reading is in proper range replace CM If 115VAC is present check for 115VAC at CR 4 BK to neutral VV and CR 1 R to neutral W If 115VAC is present at CR 4 BK to neutral W but not at CR 1 R to neutral VV replace CR If 115VAC is present at CR 1 R and Comp or ConFM are not energized check Comp start components Comp protector internal on 1 section external on 2 section
56. p you verify your diagnosis Always choose a neutral VV to establish a good neutral connection when checking high voltages Also confirm there is a good power supply and neutral connection to CM 115VAC at CM L3 BK to neutral CM N5 VV Alarm Reset To silence an alarm press and release the upper or lower button with power on For alarm information see ID Alarm Safeties NOTICE When replacing the display module or control module on appliances with a control module with remote display module a conversion kit must be ordered Refrigerator HS 5079 Freezer HS 5078 Startup Cool Down 1 Check all wiring connections Confirm DM cable CTh and DTh are properly connected 2 Move the power switch to the ON position 3 Check for 115VAC at CM L3 BK to CM N5 neutral W If 115VAC is not present check power supply wiring connections and power switch continuity 4 Check that the cabinet temperature is displayed on DM If not and DM cable is connected replace DM and CM with HS kit 5 Freezer Check that EvapFM is energized Make sure doors are closed and DS engaged Next check for 115VAC at CM F6 BK to neutral W If 115VAC is not present replace DM and CM with HS kit 6 Check that Comp and energize If not check CTh status See II D Thermistor Check If CTh ohm reading is in proper range check for 115VAC at CM C1 R to neutral W If 115VAC is not present replace DM and CM with HS kit Defrost 7 Manu
57. pproved container Do not discharge the refrigerant into the atmosphere 41 2 Brazing WARNING R 134a and R 404A themselves are not flammable at atmospheric pressure and temperatures up to 176 F 80 C e R 134a and R 404A themselves are not explosive or poisonous However when exposed to high temperatures open flames R 134a and R 404A can be decomposed to form hydrofluoric acid and carbonyl fluoride both of which are hazardous Do not use silver alloy or copper alloy containing arsenic Use an electronic leak detector or soap bubbles to check for leaks Add a trace of refrigerant to the system if using an electronic leak detector and then raise the pressure using nitrogen gas 140PSIG Do not use R 134a or R 404A as a mixture with pressurized air for leak testing 1 Braze all fittings while purging with nitrogen gas flowing at a pressure of 3 to 4 PSIG NOTICE Always install a new drier every time the sealed refrigeration system is opened Do not replace the drier until after all other repair or replacement has been made Install the new drier with the arrow on the drier in the direction of the refrigerant flow When brazing protect the drier by using a wet cloth to prevent the drier from overheating Do not allow the drier to exceed 250 F 121 C 2 Use an electronic leak detector or soap bubbles to check for leaks Add a trace of refrigerant to the system if using an electronic leak
58. r off To turn the appliance on again press the upper and lower button together for 5 sec until the cabinet temperature appears on the display module NOTICE The three dashes must be cleared otherwise the compressor will not run and product will be lost 2 Temperature Setpoint The temperature setpoint is the value for the average cabinet temperature The temperature differential for the compressor to turn on and off is 3 F 1 7 C of the temperature setpoint For example for a refrigerator temperature setpoint of 36 F 2 C the compressor comes on at 39 F 3 7 C and the compressor goes off at 33 F 0 3 C If necessary adjust the temperature setpoint as follows 1 Press and hold the upper or lower button briefly then release The current temperature setpoint flashes 2 Press the upper or lower button until the desired value is displayed After a few sec the display returns to the current cabinet temperature and the temperature setpoint is saved For refrigerators the temperature setpoint is adjustable between 34 F and 52 F 1 C and 11 C Factory default is 36 F 2 C For freezers the temperature setpoint is adjustable between 15 F and 12 F 26 C and 11 C Factory default is 4 F 20 C Note Do not adjust the temperature setpoint outside of the factory specified range Adjustment outside of this range may prevent the appliance from operating correctly 3 Changing the Temperature Displ
59. r Fan Shroud Model Shown CR1B FS B Refrigeration Flow Chart Condenser c C Condenser Fan High Pressure Thermostatic Expansion Valve FF Drier High Side Access Valve Condensate Pump Low Side 2 or 3 depending on model Thermistor Compressor Access P Valve Evaporator Fans Defrost Evaporator d l Cabinet Thermistor J Defrost Thermostat B c Lu freezer only Reservoir Condensate Pump Float Switch lagnosis ll Sequence of Operation and Service D A Sequence of Operation Flow Charts 1 Refrigerator jsouyap Buunp pe ejdsip I ejdsig po1e4691U uim 1onuoo Jew SI uomneululJ8 50 UBYM sues 1euun Aejap ejdsip enyejeduue u z 1 Aejdsig
60. re open replace DS If 115VAC is present check for 115VAC at CM F5 Y to neutral W If 115VAC is not present replace CM If 115VAC is present check for 115VAC at DSR 4 DBU to neutral W If 115VAC is not present check for 115VAC at DSR 6 Y to neutral W If 115VAC is present at DSR 6 Y to neutral W and not at DSR 4 DBU to neutral W replace DSR If 115VAC is present at DSR 4 DBU to neutral W check EvapFM blades for binding and EvapFM continuity d Comp and ConFM Diagnosis Confirm Comp and ConFM energize If not check for 115VAC at CM C1 R to neutral W If 115VAC is not present check CTh status See II D Thermistor Check If CTh ohm reading is in proper range replace CM If 115VAC is present at CM C1 R to neutral W check continuity of HPS If open allow time for HPS to reset If HPS does not reset see e HPS Activation below If HPS is closed check for 115VAC at CR 5 GY to CR 6 neutral W If 115VAC is present check for 115VAC at CR 1 R to neutral W If 115VAC is not present replace CR If 115VAC is present and ConFM is energized but Comp is not check for 115VAC at Comp protector if external internal on 1 section external on 2 section to neutral W If 115VAC is not present give time for Comp protector to cool and reset If Comp protector does not reset replace Comp protector If 115VAC is present check run capacitor start capacitor start relay and Comp motor windings If ConFM i
61. rm DTh status See II D Thermistor Check If DTh is in proper range have Comp and ConFM energized If not see 7d Comp and ConFM Diagnosis above 2 min temperature delay timer terminates temperature appears on display If temperature does not appear on display after 2 min replace CM and DM with HS kit Legend CM control module Comp compressor ConFM condenser fan motor CTh cabinet thermistor DM display module DS door switch DSR door switch relay DTh defrost thermistor EvapFM evaporator fan motor HPS high pressure switch MH mullion heater 1b Refrigerator Control Module with Integrated Display 7 Startup Cool Down There is a slight delay cabinet temperature appears on display Comp ConFM EvapFM and MH energize a EvapFM Diagnosis Confirm EvapFM energizes If not confirm doors are closed and DS engaged Next check for 115VAC at DSR 8 LBU to 7 neutral W If 115VAC is not present check DS continuity If DS is engaged and contacts are open replace DS If 115VAC is present check for 115VAC at DSR 4 DBU to neutral W If 115VAC is not present check for 115VAC at DSR 6 BK to neutral W If 115VAC is present at DSR 6 BK to neutral W and not at DSR 4 DBU to neutral W replace DSR If 115VAC is present at DSR 4 DBU to neutral VV check EvapFM blades for binding and EvapFM continuity b MH Diagnosis Confirm MH energizes Check for 115VAC at MH If 115VAC is not present confirm power s
62. round the appliance clean Dirt dust or insects in the appliance could cause harm to individuals or damage to the appliance Do not throw anything onto the shelves or load any single shelf with more than 120 Ib 54 5 kg of product They might fall off and cause injury WARNING continued Do not place anything on top of the appliance Foreign objects or moisture could enter the appliance and result in electric shock or fire The appliance is designed only for temporary storage of food Employ sanitary methods Use for any other purposes for example storage of chemicals or medical supplies such as vaccine and serum could cause deterioration of stored items Do not block air inlets or outlets otherwise cooling performance may be reduced Do not tightly pack the cabinet Allow some space between items to ensure good air flow Also allow space between items and interior surfaces Do not put warm or hot foods in the cabinet Let them cool first or they will raise the cabinet temperature and could deteriorate other foods in the cabinet or overload the appliance All foods should be wrapped in plastic film or stored in sealed containers Otherwise foods may dry up pass their smells onto other foods cause frost to develop result in poor appliance performance or increase the likelihood of cross contamination Certain dressings and food ingredients if not stored in sealed containers may accelerate corrosion of the e
63. rrect and unreasonable use Failure to service and maintain the appliance in accordance with this manual will adversely affect safety performance component life and warranty coverage To reduce the risk of death electric shock serious injury or fire follow basic precautions including the following Only qualified service technicians should install and service the appliance The appliance must be installed in accordance with applicable national state and local codes and regulations The appliance requires an independent power supply of proper capacity See the nameplate for electrical specifications Failure to use an independent power supply of proper capacity can result in a tripped breaker blown fuse or damage to existing wiring This could lead to heat generation or fire To reduce the risk of electric shock do not touch the plug or power switch with damp hands Make sure the power switch is in the OFF position before plugging in or unplugging the appliance to reduce the risk of electric shock Before servicing move the power switch to the OFF position Unplug the appliance from the electrical outlet For 115VAC Models THE APPLIANCE MUST BE GROUNDED The appliance is equipped with a NEMA 5 15 three prong grounding plug to reduce the risk of potential shock hazards It must be plugged into a properly grounded independent 3 prong wall outlet If the outlet is a 2 prong outlet it is your personal re
64. s A WARNING Repairs requiring the refrigeration circuit to be opened must be performed by properly trained and EPA certified service personnel Always recover the refrigerant and store it in an approved container Do not discharge the refrigerant into the atmosphere Use an electronic leak detector or soap bubbles to check for leaks Add a trace of refrigerant to the system if using an electronic leak detector and then raise the pressure using nitrogen gas 140 PSIG DO NOT use R 134a or R 404A as a mixture with pressurized air for leak testing NOTICE Do not leave the system open for longer than 15 min when replacing or servicing parts The Polyol Ester POE oils used in R 134a and R 404A appliances can absorb moisture quickly Therefore it is important to prevent moisture from entering the system when replacing or servicing parts Always install a new drier every time the sealed refrigeration system is opened Do not replace the drier until after all other repair or replacement has been made Install the new drier with the arrow on the drier in the direction of the refrigerant flow When brazing protect the drier by using a wet cloth to prevent the drier from overheating Do not allow the drier to exceed 250 F 121 C 1 Refrigerant Recovery The appliance is provided with refrigerant access valves Using proper refrigerant practices recover the refrigerant from the access valves and store it in an a
65. s defrost starts off cycle EvapFM and MH continue Comp and ConFM de energize 1b Manually Initiated To initiate a manual defrost press the manual defrost button on display Defrost icon turns on and if energized Comp and ConFM de energize Cabinet temperature is displayed during defrost 2 Defrost Termination DTh warms to 40 F 4 4 C EvapFM and MH continue Comp and ConFM energize Defrost Diagnosis a Defrost Initiation Has DTh cooled to 8 6 F 13 C or lower Confirm DTh status See II D Thermistor Check If DTh is in proper range or manual defrost initiated confirm Comp and ConFM de energize If not check for 115VAC at CM C1 R to neutral W If 115VAC is present and DTh is within proper range replace CM If there is no voltage at CM C1 R to neutral W and Comp and ConFM do not de energize check for 115VAC at CR 1 R to neutral W If 115VAC is present at CR 1 R to neutral W and DTh is within proper range replace CR b Defrost Termination Has DTh warmed to 40 F 4 4 C If not yet confirmed confirm DTh status See II D Thermistor Check If DTh is in proper range have Comp and ConFM energized If not see 7d Comp and ConFM Diagnosis above Legend CM control module Comp compressor ConFM condenser fan motor CR compressor relay CTh cabinet thermistor DS door switch DSR door switch relay DTh defrost thermistor EvapFM evaporator fan motors HPS high pressure switch MH mullion heater
66. s not energized check ConFM fan blades for binding and motor winding continuity If Comp and ConFM are energized and the cabinet does not cool down check for a restriction in the refrigeration circuit correct TXV operation and correct refrigerant charge e HPS Activation Confirm ConFM is energized and fan blade turns freely Confirm condenser coil is not clogged or restricted Confirm there are no restrictions in the refrigeration circuit TXV and drier Let refrigeration circuit pressures equalize If HPS does not reset and pressures are equalized replace HPS If pressures are not equalized reclaim refrigerant and diagnose refrigeration circuit restriction 22 8 Cool Down Achieved CTh cools to 3 F 1 7 C below setpoint EvapFM MH and PH continue Comp and ConFM de energize Diagnosis Confirm Comp and ConFM de energize If not and Comp and ConFM were energized longer than 2 min check CTh status See II D Thermistor Check If CTh ohm reading is in proper range and Comp and ConFM continue longer than 2 min check for 115VAC at CM C1 R to neutral W If 115VAC is present replace CM If 115VAC is not present and Comp and ConFM continue check CR 1 R to neutral W If 115VAC is present replace CR 9 Defrost The defrost icon turns on and dEF is displayed during defrost There is a 5 min minimum defrost time and a 1 hr maximum defrost time 1a Temperature Time Initiated DTh cools to 32 F 0 C 4 hr cumulative
67. sent replace CR If 115VAC is present and ConFM is energized but Comp is not check for 115VAC at Comp protector 14 to neutral W If 115VAC is not present give time for Comp protector to cool and reset If Comp protector does not reset replace Comp protector If 115VAC is present check Comp start capacitor start relay and Comp motor windings If ConFM is not energized check ConFM fan blades for binding and motor winding continuity If Comp and ConFM are energized and the cabinet does not cool down check for a restriction in the refrigeration circuit correct TXV operation and correct refrigerant charge e HPS Activation Confirm ConFM is energized and fan blade turns freely Confirm condenser coil is not clogged or restricted Confirm there are no restrictions in the refrigeration circuit TXV and drier Let refrigeration circuit pressures equalize If HPS does not reset and pressures are equalized replace HPS If pressures are not equalized reclaim refrigerant and diagnose refrigeration circuit restriction 14 8 Cool Down Achieved CTh cools to 3 F 1 7 C below setpoint EvapFM and MH continue Comp and ConFM de energize Diagnosis Confirm Comp and ConFM de energize If not and Comp and ConFM were energized longer than 2 min check CTh status See II D Thermistor Check If CTh ohm reading is in range and Comp and ConFM continue longer than 2 min check for 115VAC at CM C1 R to neutral W If 115VAC is present replac
68. sponsibility to have a qualified electrician replace it with a properly grounded independent 3 prong wall outlet Do not remove the ground prong from the plug and do not use an adapter plug Failure to follow these instructions may result in death electric shock or fire WARNING continued For 208 230VAC Models THE APPLIANCE MUST BE GROUNDED The appliance is equipped with a NEMA L14 20 four prong locking grounding plug to reduce the risk of potential shock hazards It must be plugged into a properly grounded independent 4 prong wall outlet If the outlet is a 3 prong outlet or a 4 prong non locking outlet it is your personal responsibility to have a qualified electrician replace it with a properly grounded independent 4 prong locking wall outlet Do not remove the ground prong from the plug and do not use an adapter plug After plugging in twist the plug clockwise to lock it into place Failure to follow these instructions may result in death electric shock or fire For All Models The GREEN ground wire in the factory installed power cord is connected to the appliance If it becomes necessary to remove or replace the power cord be sure to connect the power cord s ground wire Do not use an extension cord Do not use an appliance with a damaged power cord The power cord should not be altered jerked bundled weighed down pinched or tangled Such actions could result in electric shock or fire To unplug the
69. t likely the appliance is off or the high pressure switch has opened For further details see ID Service Diagnosis On refrigerators the compressor external protector is integrated with the start relay On 1 section freezers the compressor protector is an internal protector On 2 section freezers the compressor protector is an external protector 2 Short Cycle Protection There is a 2 min minimum off time and on time for the compressor Note Time may vary vvith compressor protector or high pressure svvitch activation 3 High Pressure Switch If pressure on the high side of the appliance exceeds Hoshizaki specifications the high pressure switch activates and interrupts the compressor circuit de energizing the compressor until the pressure returns to an acceptable level F Mullion Perimeter Heater Refrigerators and freezers with mullions are equipped with mullion heaters Freezers are also equipped with perimeter heaters The heaters are energized as soon as the power switch is turned on 40 IV Replacement of Components WARNING The appliance should be diagnosed and repaired only by qualified service personnel to reduce the risk of death electric shock serious injury or fire Move the power switch to the OFF position then unplug the appliance from the electrical outlet before servicing Make sure all food zones in the appliance are clean after the appliance is serviced A Service for Refrigerant Line
70. the scales Open the high side valve on the gauge manifold 7 Allow the system to charge with liquid until the proper charge weight is met 8 If necessary add any remaining charge to the system through the low side NOTICE To prevent compressor damage use a throttling valve or liquid dispensing device to add the remaining liquid charge through the low side access valve with the appliance running 9 Close gauge manifold valves and disconnect the hoses 10 Cap the access valves to prevent a possible leak 43 B Important Notes for Component Replacement NOTICE When replacing a component listed below see the notes to help ensure proper operation When replacing a control module or display module on an appliance with a control module with remote display module an HS conversion kit is required Refrigerator HS 5079 Freezer HS 5078 Component wees Compressor Install a new start relay start capacitor and compressor protector compressor protector is integrated with the start relay on refrigerators internal on 1 section freezers external on 2 section freezers Compressor WARNING To reduce the risk of electric shock be sure to reconnect the Evaporator component s ground wire Fan Motor Condenser Fan Motor Expansion Valve l Attach the expansion valve bulb to the suction line in the same location as the previous bulb Secure the bulb with the clamp and holder then insulate it Defrost After working
71. tion or defective Refrigerator Defrost Fails to Terminate Possible Cause 1 Defrost Thermistor Confirm a Defrost termination temperature 40 F 4 4 C not achieved DTh status See ID Thermistor Check b Defective 2 Compressor Relay a Defective 3 Control Module a Defrost thermistor connection loose b Defective Freezer Defrost Fails to Initiate Possible Cause 4 Control Module a Defective 6 Refrigerant Charge Reirigeran Lines 1 Defrost Thermistor Confirm a Defrost initiation temperature 32 F 0 C not achieved See 1 Not DTh status See II D Thermistor Cooling Check b Out of position or defective 2 Compressor 4 hr cumulative run a Check compressor operation See 1 Not Cooling timer not satisfied Freezer Defrost Fails to Terminate Possible Cause 1 Defrost Thermistor Confirm a Defrost termination temperature 59 F 15 C not achieved Check 2577 17807 30 3b Defrost Control Module with Integrated Display Refrigerator Defrost Fails to Initiate Possible Cause 1 Defrost Thermistor Confirm a Defrost initiation temperature 8 6 F 13 C not achieved See 1 Not DTh status See II D Thermistor Cooling Check b Out of position or defective Refrigerator Defrost Fails to Terminate Possible Cause 1 Defrost Thermistor Confirm a Defrost termination temperature 40 F 4 4 C not achieved DTh status See ID Thermistor Check b Defecti
72. tor fan motor de energizes when door is open and when appliance is in defrost Alarm Appliance is in alarm See III D Alarm Safeties for details b Display Layout Manual Up Defrost Compressor Icon Button Button HOSHIZAKI ALA is 6 n a aya oF PIN UG BACC SC Defrost Evaporator Fan Alarm Down Front Button Icon Motor Icon Icon Button Panel 34 c Control Module with Integrated Display Connections m 1 y Cabinet Thermistor Defrost Thermistor Cabinet Thermistor Defrost Thermistor ooo O O ooo ooo D D B A GONT ROL MODULE C CL ON CHO CF 2 3 4 5 6 C1 Compressor R F5 Evaporator Fan Motor Y L2 Power Supply BK Freezer N3 Neutral vv H4 Defrost Heater O Freezer 35 B Temperature The temperature default scale is F but it can be changed to read C To change see III B 3 Changing the Temperature Display Scale F or C below 1 Default Settings a Temperature Setting Refrigerator 36 F 2 C Freezer 4 F 20 C b Temperature Display Scale F Note CM with remote DM Pressing the upper and lower button at the same time for 5 sec or until appears on the display module turns the compressor condenser fan motor and evaporator fan motor freeze
73. upply and continuity of power switch If 115VAC is present check amp draw of MH If an amp reading is not present check the continuity of MH If open replace MH c CM Diagnosis Cabinet temperature appears on display If not check for 115VAC at CM L2 BK to CM N3 neutral W If 115VAC is not present check power switch povver cord connections and breaker fuse Confirm vviring connections are secure for both CM L2 BK power supply and CM N3 VV neutral If 115VAC is present and display is off replace CM d Comp and ConFM Diagnosis Confirm Comp and ConFM energize If not check for 115VAC at CM C1 R to neutral W If 115VAC is not present at CM C1 R to neutral W check CTh status See II D Thermistor Check If CTh ohm reading is in proper range replace CM If 115VAC is present at CM C1 R to neutral VV check continuity of HPS If open allow time for HPS to reset If HPS does not reset see e HPS Activation below If HPS is closed check for 115VAC at CR 5 GY to CR 6 neutral W If 115VAC is present check for 115VAC at CR 1 R to neutral W If 115VAC is not present replace CR If 115VAC is present and ConFM is energized but Comp is not check for 115VAC at Comp protector 14 to neutral W If 115VAC is not present give time for Comp protector to cool and reset If Comp protector does not reset replace Comp protector If 115VAC is present check Comp start capacitor start relay and Comp motor windings If
74. vaporator resulting in failure Do not store items near the air outlet They might freeze up and crack or break causing a risk of injury or contamination of other food NOTICE Protect the floor when moving the appliance to prevent damage to the floor Keep ventilation openings in the appliance enclosure or in the built in structure clear of obstruction Do not place anything on top of the appliance Blockage of airflow could negatively affect performance and damage the appliance To prevent deformation or cracks do not spray insecticide onto the plastic parts or let them come into contact with oil To avoid damage to the gasket use only the door handle when opening and closing L General Information A Construction Thermostatic Expansion Valve Power Switch Condensate Pump Gondenser Fan Motor Compressor 4 p I r 1 Condenser Control Box EN F me Control Module I SATT Me l with Remote Tm lt lt ront Pane Display Module I 1 Door Lock L Display Module ud RER Control Module Power Cord _4 With Integrated 2277 Display Reservoir and Condensate Pump 2 MG Door Float Switch models only E Light Door Switch Door Gasket Evaporator Cabinet Thermistor Defrost Thermistor Evaporato
75. ve 2 Compressor Relay a Defective 3 Control Module a Defrost thermistor connection loose b Defective Freezer Defrost Fails to Initiate Possible Cause 1 Defrost Thermistor Confirm a Defrost initiation temperature 32 F 0 C not achieved See 1 Not DTh status See II D Thermistor Cooling Check b Out of position or defective 2 Compressor 4 hr cumulative run a Check compressor operation See 1 Not Cooling timer not satisfied 3 Control Module a Defective Freezer Defrost Fails to Terminate Possible Cause 1 Defrost Thermistor Confirm a Defrost termination temperature 59 F 15 C not achieved DTh status See II D Thermistor Check b Defrost thermistor connection loose 31 Ill Controls and Adjustments A Control and Display Modules When the power switch is moved to the ON position there is a slight delay then the current cabinet temperature is displayed From the display module the cabinet setpoint and temperature display scale can be changed Note When exposed to high temperatures a high temperature alarm Hi may occur at start up To silence the alarm press and release the upper button Alarm clears once temperature is within factory parameters For details see 11 Alarm Safeties 1 Control Module with Remote Display Module a Remote Display Module Layout Display Module To Control Module Display Cable Upper and Lower Buttons LED Disp
76. zen RT seeren aaa 30 Defrost Control Module with Remote Display Module 30 3b Defrost Control Module with Integrated Display 31 IL Controls and Al MENS arsenal 32 A Control and Display Modules 32 1 Control Module with Remote Display Module 32 a Remote Display Module Layout ee 32 b Control Module with Remote Display Module Connections 33 2 Control Module with Integrated Display AEN 34 CUM lel o RE ER 34 b Display MN 34 c Control Module with Integrated Display Connections 35 B Temp rat re ENE ET NE e 36 1 Default E 36 2 Temperature Setpoint 36 3 Changing the Temperature Display Scale F or C 36 a Control Module with Remote Display 36 b Control Module with Integrated Display AAA 37 ODE 37 1 Control Module with Remote Display Module 37 2 Control Module with Integrated Display AEN 37 3 D Al rm Safelles Luna ee eu ee n eee telas eee mtu adel ak baya 38 1 Control Module with Remote Display 12 38 2 Control Module with Integrated Display 39 Safety DE NES e ss 40 F Mullion Perimeter Heater Luavssemesmimsssenemsnseeumun tub i d b si 40 IV Replacement ot

Service Manual

Contents

Download Pdf Manuals

Related Search

Related Contents