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Service Manual MCD-Z120 (CA) MCD

1. LA9250M LC78602bE LA6541D PIN DC VOLTAGE PIN NAME PIN DC VOLTAGE PIN NAME 1 21V FINZ 1 OV DEFI PIN DC VOLTAGE PIN NAME 2 24 V FIN1 2 3V 5V 1 8 6 V Vcc 3 1 6 V E 3 2 DV MUTE 4 1 6 V F 4 VVss 3 23V VIN1 5 0 6 V TB 5 1 65 V ISET 4 24V VG1 6 245 V 6 49 V VVDD 5 39 V OUT 1 9 7 245 V E 7 0 1 V FR 6 40 V OUT 1 9 8 12V TEST 8 Vss 7 0 V GND 9 2 45 V SCH 9 2 45 V EFMO 8 0 V GND 10 075 V TH 10 23 V EFMIN 9 0 V GND 11 2 0 V TA 11 TMCO 10 39 V OUT 2 9 12 2 35 V D 12 15 V CLV 11 39 V OUT 2 13 2 45 V TD 13 HFL 12 24V VG2 14 22 V JP 14 TES 13 24V VIN2 15 24V TO 15 4 8 V TOFF 14 49 V REG OUT 16 16 4 8 V TGL 15 8 V REG IN 17 24V FD 17 13V JP 16 49 V RES 18 245 V FD 18 DV LASER 17 47 V CD 19 2 45 V FA 19 0 4 V FSTA 18 23 V VIN3 20 1 55 V 9 20 0 4 V EFBAL 19 24V VG3 21 2 45 V FE 21 SPB 20 4V OUT 219 22 2 45 V FE 22 4 9 V VDD 21 4V OUT 3 23 0
2. Indoor unit s address alarm message 1 second 2 second 050 0059 Fig 36 of 4 alarm messages be accessed by pressing either HH as follows NOTE Pressing this Reset switch will clear all the service history Reset switch accessed in order of Present Past Pr sent Past MM accessed in order of Past Present Past Present 051 0059 Fig 37 For example if the last four alarm messages were order of occurance from oldest to most recent P1 P9 P4 and most recently E1 then the display would look as shown below as you pressed HH four times The 5th time you pressed HH you would start the display cycle over and the first message would be shown again O ni ni ni nmi Lt LI ni c Ou E EL dues UI P alarm message Fig 38 052 0059 If there no alarm messages the display shows nmi Alarm Message Fig 39 053 0059 5 700064 62 4 SERVICE PROCEDURES 4 1 7 E IMPORTANT Never press CHK CHNG button unless you want to erase the accessed data in memory Follow the procedure below only when erasing is necessary Q To erase accessed data press the CHK CHNG button When erasing is finished shows on the remote control unit s dis play After checking the alarm messages be sure to set the SERVICE switch back to its original position E Che
3. W YEL RED RED WHT WHT BLU Buu BRN PNK CONNECTOR 6P RED BLR REO GRY Btu ORG BRN vit 15 CN010 BRN DV 5 6 THERM STOR ary fifi DISCHARGE GAS 22 BRY CN028 T2 YEL TH5 THERMI STOR BLK G9 ECH BLK TEMPERATURE THA THERM STOR OUTDOOR coll Ci ocooo SEI CONNECTOR RUNNING 12P WHT CAPACITOR rees PNK WHT YEL BRY Beem 12 CN014 CN025 connecror P 1 e 3 4 6 7 8 cowwEcroe 1T2 e 112 CONNECTOR aptwit s ife s e e 7 s 2P vec gt 1 2 8 5212127 47 9 T3 BLK REO WHT BLU PNK 8RY WHT YEL BLK BLK BRN YLT BLK BLK FOUR WAY HIGH PRESSURE GRW YEL VALVE 1 SWITCH 83PH 64 COMPRESSOR MOTOR CRANK CASE OUTOOOR FAN MOTOR AND MEATER AND COMPRESSOR MOTOR OUTDOOR FAN MOTOR THERMAL PROTECTOR PROTECTOR 49FO 49C 187 THERMISTOR BLK OUTDOOR BLE cot C2 THE THERMISTOR BLX BLK DISCHARGE GAS Fig 28 5 700064 37 3 ELECTRICAL DATA 3 5 3 5 Outdoor Unit Ass y Component List POW 30CH SYMBOLS SYMBOLS DESCRIPTION SE DESCRIPTION SPECIFICATIONS SYMBOLS DESCRIPTION SPECIFICATIONS 8006 COMPOSITE P
4. NOTE In case there are no sensor equipped with the unit C is shown on the display d Resetting the remote control unit display back to normal To reset the display when you are finished press both HH and MM buttons at the same time for 3 seconds then the remote control unit will return to clock display mode and show the present time D Past service history display The remote control unit can store the 4 most recent alarm codes so you can see what kind of problems the unit has had if any Knowing what has already happened and been fixed helps you know what to check at present This function is usable even if the unit is not working 1 To display the past error codes follow the procedure below Procedure Turn ON the SERVICE switch on the back of the P C B Ass y in the remote control unit See Section 4 1 7 A in this chapter for exact location D When the switch is turned ON a change from the normal display to service check display takes place as shown in the table below NORMAL Dep au Display Un9T9 SERVICE CHECK DISPLAY Set temp XX C Group address Unit Number Hours Indoor unit s address Minutes Alarm Message SM700064 S61 4 SERVICE PROCEDURES 4 1 7 D The panel now shows this display and cycles automatically as shown below When group control is ON each unit s address is displayed oi ui mio c
5. 5 What to Do for Each Alarm Message 46 6 Procedures for When a Specific Component Does Not Work at All 56 7 Using the Remote Control 58 4 2 Checking the Electrical Components 64 1 Measurement of Insulation Resistance 64 2 Checking of Protective Devices 0 0040 01 65 3 Checking of Electrical Parts 66 4 Arrangement of Electrical Parts and Thermistor Location 69 5 Thermistor Characteristic Curve ar 71 6 Checking the P C B Ass y a 72 As for the above 3 items preceded by refer to Electric Wiring Diagrams in Fig 27 and Fig 28 SM700064 39 4 SERVICE PROCEDURES 4 1 4 1 Troubleshooting This section explains What the LED codes mean What the remote control unit display screen messages mean How to use the flow charts to find and solve problems How to use the self diagnostic tests to find parts that aren t working right This unit is made to be trouble free and not need much service However with time moving parts wear out electronic components break down and sometimes misuse damages the unit The purp
6. or less Because this appliance heats a room by utilizing the heat of the outside air heat pump system the heating efficiency will fall off when the outdoor temperature is very low If sufficient heat cannot be obtained with this heat pump use another heating appliance in conjunction with this unit When the outdoor temperature is low frost or ice may form on the outdoor heat exchanger coil reducing the heating performance When this happens a microcomputer controlled defrosting system operates At the same time the fan on the indoor unit stops or runs at very low speed in some cases and the STANDBY indicator appears on the display until defrosting is completed Heating operation then restarts after several minutes This interval will vary slightly depending upon the outdoor temperature and the way in which frost forms For several minutes after the start of heating operation the indoor fan will not start running or it will run at very low speed in some cases unti the indoor heat exchanger coil has warmed up sufficiently This is because a cold draft prevention system is operating During this period the STANDBY indicator remains displayed STANDBY remains displayed during defrosting or when the compressor has been turned off or when the unit is running at very low speed by the thermostat when the system is in the heating mode Upon completion of defrosting and when the compressor is turned on again STANDBY
7. 4 4 5 0 15 5 5 40 3 0 5 5 12 2 5 45 2 5 5 Coil resistance Thermal cut off temperature C Thermistor Coil sensor Coil resistance Q Thermistor Room or coil sensor SDT 500B6 2 xi PTC 51H SI Coil resistance Q 0 16 3 5 40 2 6 5 60 13 8 5 90 5 1 5 590 12 5 5 45 2 1 5 70 C 9 7 5 100 3 8 5 10 9 9 5 50 1 8 5 75 8 2 5 110 C 2 8 5 20 6 3 5 55 1 5 5 80 C 7 045 120 2 2 5 30 4 0 5 85 C 5 9 5 130 C 1 7 5 FMCA 1S MY2F T1 AC 220 240 V DC 12 V AC 440 V 13A AC 240 V 1160 15 Coil rated Contact rating Coil resistance at 25 C Solenoid control valve or coil Solenoid control valve MOZS076BO LB60012 Solenoid coil 5 700064 2412 1 4 1 SPECIFICATIONS Data SPW T252GH5 imensiona 1 4 D UOISU LUIQ 6c 9c9 029 q O woe 88S eqni epiM A Indoor Uni uonoeuuoo ueg 6679 9 eqni MOLEN seb 185 i e 0611 330 1108 HOHONV S31OH P 829 v 40 L ONI
8. 3 CORE SHIELD W R P HEAD TO REC CN201 645 025 1894 6P AWG28UL WIRE CN1103 TO CD MECH 645 041 6491 FLAT WIRE 4435044 CN103 TO CNP103 645 041 6507 FLAT WIRE 4 60 4 CN101 TO CNP101 645 041 6514 FLAT WIRE 4 60 4 CN801 TO CNP801 645 041 6521 FLAT WIRE 4 60 4 CN102 TO CNP102 645 041 6538 15P FILM CABLE C1101 TO PICK UP ASSY 645 017 0195 CABLE TIE 4 FOR PWR TRANS WIRE 645 0170195 CABLE TIE 4 ON OFF WIRE 645 0170195 CABLE TIE 4 SPK WIRE 645 0170195 CABLE TIE 4 DECK TO WIRE 645 016 5160 WIRE TIE FOR WIRE DRESS DISPLAY P W BOARD ASSY REF NO PART NO DESCRIPTION 71 614 312 9370 ASSY PWB DISPLAY CTL KEY CA Only initial 71 614 3137221 ASSY PWB DISPLAY CTL KEY Except initial CNP20 645 042 4250 F WIRE UL TO CD MAIN CN20 CP104 645 041 6477 13P FLAT WIRE UL CNP104 TO CD MAIN CN104 D0701 645 016 8956 SW DIODE D0702 645 016 8956 SW DIODE D0703 645 016 8956 SW DIODE 00704 645 016 8956 SW DIODE D0705 645 016 8956 SW DIODE D0706 645 016 8956 SW DIODE DP701 645 025 2044 LED DISPLAY LD701 645 027 7856 LED SEL 2310G PLAY LD702 645 027 7856 LED SEL 2310G PROG LD703 645 027 7856 LED SEL 2310G REPEAT 00701 645 016 9205 TRANSISTOR 00702 645 025 1634 TR 25 1317 00703 645 016 9205 TRANSISTOR Except 00704 645 025 1634 TR 25 1317 RX701 645 036 2170 REMOTE RECEIVER SPS444 1 SW701 645 041 4596 TACT SW KTL TC 0103 PLAY PAUSE SW702 645 041 4596 TACT SW KTL TC 0103 PROG SW703 645 041 4596 TACT SW KTL TC 0103 STOP SW704 645
9. 220V 60Hz KR 110V 60Hz TW DC 12 V 8 D size batteries Dimensions 440 x 173 x 235 mm W x H x D Weight approx 3 2 kg without batteries Specifications subject to change without notice REFERENCE No SM5810126 SAFETY PRECAUTION CAUTION USE OF CONTROLS OR ADJUSTMENTS OR PERFORMANCE OF PROCEDURES OTHER THAN THOSE SPECIFIED HEREIN MAY RESULT IN HAZARDOUS RADIATION EXPOSURE LASER 0 6 mW Max CW WAVELENGTH 790 nm TUNER ADJUSTMENTS PART LOCATION CLASS 1 LASER PRI LUOKAN 1 LASEI KLASS 1 LASERAPI CAUTION INVISIBLE LASER RADIATION WHEN OPEN AND INTERLOCKS DEFEATED AVOID EXPOSURE TO BEAM ADVARSEL USYNLIG LASER STRALING VED ABNING NAR SIKKERHEDSAFBRYDERE ER UDE AF FUNKTION UNDGA UDS ETTELSE FOR STRALING VARNING OSYNLIG LASER STRALNING NAR DENNA DEL AR OPPNAD OCH SPARR AR URKOPPLAD STRALEN AR FARLIG VORSICHT UNSICHTBARE LASERSTRAHLUNG TRITT AUS WENN DECKEL GEOFFNET UND WENN SICHERHEITSVERRIEGELUNG UBERBRUCKT IST NICHT DEM STRAHL AUSSETZEN VARO AVATTAESSA JA SUOJALUKITUS OHITETTAESSA OLET ALTTIINA NAKYMATTOMALLE LASERSATEILYLLE ALA KATSO SATEESEEN 1 AM IF ADJUSTMENT AM LOOP ANT n BAND STEP SING RADIO ADJUST REMARKS Re FRE SETTING MENT IC801 AM IF 1 455 2 T802 ADJUST FOR m CA PA
10. 3 000 Hz 2 Press the PLAY button 3 Use a flat tip screwdriver to turn the SVR located inside the rear of the motor to adjust SVR so that the frequency counter become 3 000 Hz MOTOR SPEED ADJ RS NS 4 CHECKING THE MECHANISM TORQUES AND TENSION Clean the head capstan and pinch roller before making any measurement Take up torque Cassette for PLAY CT 120M PLAY CT W measurement FF REW CT F PLAY 30 70 gr cm 1 0 6 0 gr cm F FWD 55 gromormore 2 DEN 55gromormoe EXPLODED VIEW CABINET amp CHASSIS P T 96 s A zoa Di 0 90 ac DN Ug d S e dl E 01A vL 22 lt gt _60 HL terme S02 PARTS LIST PRODUCT SAFETY NOTICE EACH PRECAUTION IN THIS MANUAL SHOULD BE FOLLOWED DURING SERVICING COMPONENTS IDENTIFIED WITH THE IEC SYMBOL IN THE PARTS LIST AND THE SCHEMATIC DIAGRAM DESIGNATE COMPONENTS IN WHICH SAFETY CAN OF SPECIAL SIGNIFICANCE WHEN REPLACING A COMPONENT IDENTIFIED USE ONLY THE REPLACEMENT PARTS DESIGNATED OR PARTS WITH THE SAME RATINGS OF RESISTANCE WATTAGE OR VOLTAGE THAT ARE DESIGNATED IN THE PARTS LIST IN THIS MANUAL LEAKAGE CURRENT OR RESISTANCE MEASUREMENTS MUST BE MADE TO DETERMINE THAT EXPOSED PARTS ARE ACCEPTABLY INSULATED FROM THE SUPPLY CIRCUIT BEFORE RETURNING THE PRODUCT TO THE CUSTOMER CAUTION Regular type resistors and capacitors are not listed
11. OFF OFF 019 0059 Fig 19 When the Compressor has stopped while in AUTO mode the 4 way valve switches with different delays according to the following conditions Compressor has stopped under the operation of AUTO mode condition Has compressor stopped more than 1 hour 4 way valve delays its switching for 50 seconds after compressor has been turned ON 4 way valve delays its switching for 30 seconds after compressor has been turned ON Fig 20 020 0059 2 12 Automatic Restart after Power Interruption When the power comes back on after a power failure the air conditioner will start again automatically at the same settings as before the failure In order for the settings to be saved the battery back up switch must be set to ON as described below Set the battery back up switch to ON The battery back up switch is located on the back of the P C B Ass y on the reverse side of the remote control unit See Fig 21 OFF Back up switch BAT BKUP Back up battery 021 0059 Fig 21 5 700064 28 2 PROCESSES AND FUNCTIONS 2 13 14 2 13 Electronic Refrigerant Control Valve This valve allows very precise and smooth control of the amount of refrigerant flowing in the system Since the valve is operated by a step motor the control circuits can open or close it in very exact amounts so the degree of heating or cooling can be ch
12. R061 RESISTOR CARBON 5600 5 1 4w CAPACITOR JP002 JUMPER 5 RO62 RESISTOR CARBON 5600 5 1 4W CAPACITOR 50V 1001 COIL 1 10909 101 10KN 5 1 44 CAPACITOR 50 L003 COIL 1 10909 101 10KN 5 174w CAPACITOR 002 5 1 4W C034 CAPACITOR 1004 20 16 003 PHOTOCOUPLER PC8178 RESISTOR CARBON 10Kn 5 1 4W C035 CAPACITOR 0 01 25 005 PHOTOCOUPLER PC817B RESISTOR CARBON 10kn 5 1 4W C036 CAPACITOR 0 022 25V 006 PHOTOCOUPLER PC817B i0kn 55 1 4w C037 CAPACITOR 1004 20 16V PC007 PHOTOCOUPLER 10KQ 5 1 4W CAPACITOR 0001 TRANSISTOR 10kn 5 1 4 CAPACITOR 003 TRANSISTOR 10kn 5 1 4W CAPACITOR 0 047 uF 0007 TRANSISTOR 10 5 1 4W C046 CAPACITOR 10uF 20 50 i0kn 5 1 4 047 CAPACITOR 0 00144 10 50 10 5 1749 0 0014 10 50V 0010 TRANSISTOR 4 7Kn 5 1 4W CAPACITOR 15PF 5 50V G011 TRANSISTOR 4 7 5 1 4W 0012 TRANSISTOR 15 0 5 1 4 C051 CAPACITOR 0 1 25 0013 3 3kn 5 2 CAPACITOR 0014 TRANSISTOR GVE 12HME K CAPACITOR 0015 C055 CAPACITOR 0016 0017 TRANSISTOR 50141 Suks1120 4 4 C057 CAPACITOR 5002 Iewen 5555012 3 i20Kn 5X 2w SSSGM22 CAPACITOR 0 047 F 50V R006 5600 5 1 4w CT4229205 30 CAPACITOR R007 RESISTOR CARBON 10Kn 5 1 4W CAPACITOR 8010 CAPACITOR 2011 CAPACITOR R012 RESISTOR CARBON 5600 5 1 4 CN002 CONNECTOR JBP B R013 RESISTOR CARBON 10 5 1 4W VA004 VARISTOR CN003 CONNECTOR J8P B R021 RESISTOR CARBON
13. 39Kn 5 1 4 001 CRYSTAL CONNECTOR J5289 2A WH 4 3kn 1 1 4W 023 RESISTOR METAL 4 7 1 Lag Sa CONNECTOR JBP B R024 RESISTOR METAL 4 7KQ 1X 1 4W si CONNECTOR R025 RESISTOR METAL 4 Kn 1 1 4W cm etj CONNECTOR J82636 0202 G R026 4 3kn 1 174 oer ue e CONNECTOR J8263B 0202 R R027 RESISTOR CARBON 10Kn 5 1 4W x CN024 CONNECTOR J8263B 0202 W R028 RESISTOR OXIDE 300kn 5 24 R029 RESISTOR CARBON 5600 5 1 4W Ee 030 RESISTOR CARBON i0kn 5 Lag a eee CONNECTOR J8263B 0202 B R031 RESISTOR OX DE 300kn 5 24 ie oM CN029 CONNECTOR JSB2P HVQ CA R 8032 RESISTOR CARBON 5600 5 1 4W HE el EE CONNECTOR JSB2P HVQ CA B R033 RESISTOR CARBON 10Kn 5 174W im ieee 522 JSB2P HVQ CA 8034 Ikn 5X 174 AE NI 482638 0302 R035 2 2 5 1 4W pow om el J82638 0302 R R036 c u Tp 38 SM700064 4 SERVICE PROCEDURES 4 1 Troubleshooting dos do tpe 40 1 Check before and after Troubleshooting 41 2 General Troubleshooting Flow Chart Diagnosis and Remedy 42 3 Meanings of the Remote Control Unit Alarm Messages 43 4 LED Indication on the Outdoor Unit s P C B ASS Y 45
14. Elec Refrigerant Control Valve Rated conditions Refrigerant control Operation sound Indoor Hi Me Lo dB A 45 41 37 Outdoor Hi dB A 52 Refrigerant tubing connections Flare type Max allowable tubing length at shipment 4 m ft Max 50 164 D Limit of tubing length m ft 50 164 Refrigerant tube Narrow tube mm in 6 35 1 4 diameter Wide tube mm in 15 88 5 8 Refrigerant tubing kit Accessories Optional Mounting plates DIMENSIONS amp WEIGHT Indoor Unit Outdoor Unit Unit dimensions Height mm in 185 7 1 4 _ 885 34 7 8 Width mm in 1 270 50 870 34 1 4 Depth mm in 670 26 3 8 300 11 3 4 Net weight 28 61 EM 72 158 Shipping weight kg Ib 36 79 86 190 Shipping volume m ft3 10 3 125 DATA SUBJECT TO CHANGE WITHOUT NOTICE Cooling Indoor air temperature 27 C DB 19 5 C WB Outdoor air temperature 35 C DB Outdoor air temperature 7 C DB 6 C WB Heating Indoor air temperature 21 C DB SM700064 1 SPECIFICATIONS 1 2 4 1 2 Major Component Specifications A Indoor Unit MODEL No SPW T252GH5 Source 220 230 240 V 1 50Hz Remote control unit RCS X252GH Microprocessor Controller P C B Ass y POW X252GH Microprocessor
15. SERVICE PROCEDURES 4 2 6 6 Checking the P C B Ass y Make sure that the setting of switches S on P C B Ass y is positioned ON and OFF as follows Indoor P C B Ass y S1 SLV Set to NORMAL e 52 BLK Set to OFF 1 through 4 53 Set to as the table below Table Model No 1 2 3 4 SPW T252GH5 EI OFF ON OFF e 54 BLK Set to as the table below Model No 1 2 3 SPW T252GH5 OFF OFF S5 BLK Set to 1 S6 Set to 1 Fig 55 Cool 8005 1 2 3 4 1 078_0059 Indoor P C B Ass y POW X252GH SM700064 72 4 SERVICE PROCEDURES 4 2 6 Outdoor P C B Ass y e 1 GRN Set to as the table below Model No 1 2 3 4 SPW C252GH8 ON OFF ON OFF 52 SLV Set to NORMAL 953 BLK Set as the table below Model No 1 2 SPW C252GH8 EI OFF Fig 56 A TWWYON 1009 077 0059 Outdoor Ass y POW 30CH SM700064 73 5 INSTRUCTION MANUAL Contents Product Information Alert Symbols Installation Location Electrical Requirements Safety Instructions Names of Parts Control Panel Display Control Panel Operation Setting the Timer Adjusting the Airflow Direction Care and Cleaning Troubleshooting Tips for Energy Saving Product Informat
16. TUNER P W BOARD ASSY REF NO 76 76 AFCO1 C0807 C0817 00803 00804 00805 801 0801 0802 0803 0804 SW801 T0801 T0802 T0803 ZD801 PART NO 614 311 4338 614 313 7207 645 014 1966 645 020 3503 645 023 7935 645 026 5693 645 027 3063 645 014 0945 403 056 8905 645 020 3138 645 016 9236 645 016 8956 645 016 8956 645 036 1890 645 020 9338 645 014 1089 645 014 1072 645 014 1041 645 014 0990 645 037 2896 645 025 1733 645 025 1757 645 025 1740 645 036 2804 DESCRIPTION ASSY PWB TUNER CA Only initial ASSY PWB TUNER Except CA Only initial SCREW FOR PVG TEST PINS FOR AM ANT TOOTH WASHER FOR PVC Except CA SCREW 2 6X5 FOR PVC SCREW 2 6X6 FOR PVC Except CA AFC FV 1043 AFC Except CA POLYESTER 1000P M 50V POLY CAP 120PF 50V SW DIODE SW DIODE SW DIODE IC LA1828 FM COIL FM COIL FM COIL FCC OSC A 20 PVC AM FM SWITCH AM FM FM ST MIXER 0749 IFT AM IFT 0754 IFT FM DET 0750 ZENER 4 7V BATTERY P W BOARD ASSY REF NO 77 PART NO 614 292 1043 645 025 2013 DESCRIPTION ASSY PWB BATT Only initial BATTERY SPRING EXPLODED VIEW amp PARTS LIST TAPE MECHANISM TM03 5 I IC BLOCK DIAGRAM amp DESCRIPTION 101 LA4227 2 channel AF power VCC OUT1 BS1 NF1 1 PRE GND THERMAL SHUT DOWN PROTECTION STANDBY OUT2 BS2 NF2 IN2 DC 801 LA1828 Single chip tuner
17. 95 V SP 23 0v FSEQ 22 0 V GND 24 2 85 V SPC 24 23 DV GND 25 18 V 25 4 9 V SLOF 24 0 V GND 26 24 V SPD 26 OV SLED 25 4 V OUT 4 9 27 2 25 V SLED 27 SLED 26 39 V OUT 419 28 2 45 V SLD 28 PUIN 27 24V VG4 29 20 V SL 29 2 45 V DOUT 28 23V VINA 30 1 55 V 50 30 OV NC 29 24V Vref 31 0 35 V OSC 31 4 9 V SEG 8 30 8 6 V Vcc 32 DV NC 32 28 V SEG 7 33 49 V SLOF 33 2 8 V SEG 6 34 DV TGRF 34 07 V SEG 5 35 DV SPS 35 0 75 V SEG 4 36 04 V EFBAL 36 2 8 V SEG 3 IC TA7668 37 04 V FSTA 37 0 75 V SEG 2 38 DV LASER 38 0 45 V SEG 1 39 OV NC 39 OV VSS PIN NO DC VOLTAGE 40 15V TJP 40 27 V VDD 1 0 V 41 48 V TGL 41 1 2 V DIG 2 2 79 V 42 48 V TOFF 42 12V DIG 1 3 0 V 43 DV TES 43 2 0 V PROG 4 31 V 44 HFL 44 20 V KEYIN 5 13 V 45 15 V CLV 45 DV NC 6 12 V 46 DV 46 DV NC 7 0 1 V 47 16 V RF 47 DV RAMDOM 8 0 48 2 45 V RF 48 0 V RMTSL 3 9 0 49 23 V SLC 49 0 V EFLG 10 0 Vv 50 245 V SLI 50 DV FSX 11 13 V 51 0 V DEF 51 DV AMUTE 12 13 V 52 DV DRF 52 44 V REMOTE 13 3 1 V 53 2 0 V FSC 53 0v RMTSL 2 14 0 54 23 V TBC 54 17 V LCHO 15 0 9 V 55 255 55 42 V L RVDD 16 8 0 V 56 49 V 2 56 DV L RVSS 57 20 V REFI 57 17 V RCHO 58 245 V VR 58 DV CLOSE 59 0 45 V LF2 59 DV RMTSL 1 60 0 85 V PH1 60 15 V XOUT 61 03 V BHi 61 0 35 V XIN 62 48 V LDD 62 38 V XVDD 63 DV LDS 63 45 RES 64 DV NC 64 DV DRF LA1828 LA4227 DC VOLTAGE PIN NO DC VOLTAGE PIN NAME PIN NO DC VOLTAGE PIN NAME BING FM A
18. B250AC103100 0001 DIODE 01 R037 RESISTOR CARBON 2 2kn 5 1 4W C004 CAPACITOR 4 74F 20 50 D002 DIODE GMA01 R038 RESISTOR OXIDE ikna 5 2 C005 CAPACITOR 4 20 50 0004 DIODE GMA01 2039 RESISTOR CARBON 10Kn 5 1 4 0005 DIODE GMAO 1 1 1 4 0006 DIODE OSK10E 87 RO41 RESISTOR METAL 1 6Kn 1 1749 0007 Diob bDskioe BT Ro42 RESISTOR METAL 5600 1 1749 0008 010 8007 035 8043 RESISTOR CARBON 1Kn 5X 1749 0009 DIODE Si ikn 5X 174 C012 CAPACITOR 0 022 F 25V D010 DIODE RO45 RESISTOR CARBON 47Kn 5 1 44 10kn 5 1749 014 CAPACITOR 0012 6100 7 oor O CAPACITOR D013 6100 6441 CAPACITOR 0 0015 DIODE CAPACITOR 0 0906 DioDE 5188 Roso RESISTOR CARBON 10 5 174w CAPACITOR 0 0017 olobe ste 1818 o R051 RESISTOR CARBON 10 5 1 4W CAPACITOR 0 0018 __ __ SiP 1818 052 10kn 5X 1 4 C020 CAPACITOR 0 O22uF 25V 80001 BRIOGE DIODE R053 5 1 4 CAPACITOR 0 8054 RESISTOR CARBON i0Kn 5 174w CAPACITOR 0 F001 FUSE RO55 RESISTOR CARBON 10 5 174 CAPACITOR 0 F002 FUSE 2507 5 R056 RESISTOR CARBON 10Kn 5 174W CAPACITOR 0 1 001 IC L7805ML RESISTOR CARBON 10Kn 5 1 4w CAPACITOR 0 1C002 IC UPD78214CW RESISTOR CARBON 10KN 5 1 4W CAPACITOR 0 1 003 181233 RO59 RESISTOR CARBON 5600 5 174W CAPACITOR 1C004 IC M5295L C028 CAPACITOR 0 1 25
19. BEST IF WAVE 460KHz FORM d 460KHz CAPA WAVE FORM FIG 1 2 FM IF ADJUSTMENT 10 5 BAND STEP SING RADIO ADJUST REMARKS FRE SETTING MENT FM IF 1 10 7MHz T801 ADJUST FOR T803 BEST IF seg WAVE FORM amp S CURVE WAVE FORM MHZ FIG 2 ODUCT LATE PARAT TUNER ADJUSTMENTS 3 TUNING FREQUENCY RANGE ADJUSTMENT FM BAND FM SG OSCILLOSCOPE AM BAND OSCILLOSCOPE 4 AM TRACKING ADJUSTMENT Signal Generator FM Band Set the internal modulation of Singnal generator to 1 KHz Dev 22 5KHz NO BAND SING ADJUST FOR ADJUSTMENT FRE 1 FM 87MHz MAXIMUM L803 CA PA SENSITIVITY 87 35MHz Except CA PA 2 FM 109MHz CA PA MAXIMUM TC1 PVC 108 5MHz SENSITIVITY TRIMMER Except CA PA 3 REPEAT STEP 1 AND 2 SEVERAL TIMES AM Band Set the internal modulation of Singnal generator to 30 1KHz NO BAND SING ADJUST FOR ADJUSTMENT FRE 4 AM 515KHz MAXIMUM L804 SENSITIVITY 5 AM 1740KHz CA MAXIMUM TC3 PVC 1640KHz SENSITIVITY TRIMMER Except CA 6 REPEAT STEP 4 AND 5 SEVERAL TIMES Connects to the AM ANT Coil througt the loop antenna Adjust for the indication of VTVM of the wave form scope to be maximum AM SG OSCILLO
20. Detection Circuit Q The Compressor Current Detection Circuit detects the compressor current and depending on the current range can shut down the compressor motor so it will not be damaged from too much current Too much current can be caused by several factors particularly mechanical seizing of the compressor or liquid backflow Either of these conditions can hold the compressor to run and thus drawing so much current that the motor can burn out Comp Amps A Locked Comp Cut off Range 5 15 Overload Protection Range Is x 1 25 ls p Normal Operation Range 4 D caren valje E SC Fig 22 Rated Current Value Overload Protection Locked Compressor Cut off Outdoor Model Is A Is x 1 25 A Is x 1 5 A SPW C252GH8 6 7 8 9 4 Chart Summary and Explanations Overload Protection When the detected current is 1 25 1 5 times greater than the rated current value Is and continues for 30 seconds both compressor and outdoor fan Stop Thermostat OFF After 3 minute pause if the air conditioner is ready for Thermostat ON it starts again However if the function mentioned above repeats twice within 30 minutes the remote control unit displays the alarm message H1 compressor overload Locked Compressor Cut off When the detected current is 1 5 times greater than the rated current value Is and continues for 2 seconds both compressor and outdoor fan stop Thermostat OFF Afte
21. Fan Number diameter Centrifugal 4 0 130 Fan Motor Model Nominal output KFG4Q 41 40 W Source 220 230 240 V 1 50Hz No of pole rpm 230V High 4 1 198 Coil resistance BRN WHT 175 1 ORG YEL 70 9 Ambient temperature 20 C WHT VLT 43 6 YEL PNK 15 6 VLT ORG 27 0 Safety devices Operating temperature 130 8 Close 79 15 C Run capacitor uF 440 V 2 5pF Electronic Refrigerant Control Valve Solenoid control model Rated DKV MOZS076B0 12 V 6 3 W Coil resistance at 20 C ORG GRY 46 YEL GRY 46 RED GRY 46 BLK GRY 46 Solenoid control valve model DKV 2471 Aluminum plate fin Copper tube Rows fin pitch mal s29 Face area 0 186 Auto louver motor MC8 D Rated 200 240 50 Hz W 3 3 rpm Coil resistance at 25 C 14 900 Q 8 Dew proof heater 240 V 15 W 5 700064 1 SPECIFICATIONS 1 2 SS B Outdoor Unit Unit Model No SPW C252GH8 Source 380 400 415 V 3 50 Hz Controller P C B Ass y POW 30CH Microprocessor Control circuit fuse 250V 5A Compressor Rotary Hermetic Model Code No C R224H8U 806 577 88 Nominal output 2 400 Compressor oil 1 350 Coil resistance at 25 C T R 5 54 R S 5 54 S T 5 54 Crank case
22. MAIN POLYESTER 2200P M 50V CD MAIN POLYESTER 0 033U M 50V CD MAIN POLYESTER 6800P M 50V CD MAIN POLYESTER 3300P J 50V CD MAIN POLYESTER 0 1U J 50V CD MAIN POLYESTER 0 1U J 50V CD MAIN POLYESTER 0 1U J 50V CD MAIN 2P WAFER TO BATT 5P WAFER TO DISPLAY 13P WAFER CD MAIN TO DISPLAY BD 3P WAFFR H TYPE TO REC BD 12P WAFER TO REC BD RECTIFIER RECTIFIER RECTIFIER RECTIFIER RECTIFIER CSA APP RECTIFIER CSA APP RECTIFIER SW DIODE SW DIODE 1N4148 Except CA SW DIODE 1N4148 Except CA SW DIODE GMB01 BT CD MAIN SW DIODE GMB01 BT CD MAIN SW DIODE CD MAIN 1 6A APP FUSEDIA5X20 250V TIME LAG Except CA 7668 BEAD COIL 25UH FCC BEAD COIL 25UH FCC BEAD COIL 25UH FCC BEAD COIL 25UH FCC BEAD COIL 25UH FCC BEAD COIL 25UH FCC AM COIL BEAD COIL 25UH FCC CHOKE COIL 10UH RADIAL TYPE CHOKE COIL 10UH RADIAL TYPE BEAD COIL 25UH FCC 15P CONNECTOR CD CN1101 TO PICK UP 6P WAFER CD CN1103 TO SPINDLE MOT 2P WAFER CD CN1105 TRANSISTOR TR 2SD882 TR 2SA1317 CD MAIN TR 2SA1346 AC CD MAIN TR 2SA1346 AC CD MAIN TR 2SB764E CD MAIN SWITCH IC LA9250M CD MAIN IC LA6541D CD MAIN IC LC78602YE CD MAIN CERAMIC RESONATOR CSA16 93MXZ040 C CERAMIC RESONATOR ZTA16 93MX ZENER CD SWITCH P W BOARD ASSY REF NO 75 SW001 PART NO 614 311 4352 645 036 2026 645 025 1818 DESCRIPTION ASSY PWB CD SWITCH Only initial 2P J WIRE AWG26UL CNP105 TO MAIN 1105 MICRO SW LF 101 0 CD DOOR SW BD
23. R703 ag 000 S O bt i F F O PROG gt Hd BF SW706 R710 58 88 raa TI L NANS HL e ett See 7 070 BE STT e 8 L O R701 8 i Ka R706 CNP104 D GE DISPLAY CA MODEL 2120 KEY BOARD 8 1 PLAY 001 01201 700 In _ E 5 9 1 04 10 9652 DSP701 PLAY PAUSE REPEAT gt S KL eS AP R703 F F PROG foil SW706 ST 58 ss 9 2 58 28 Ss a 1 8705 O O O Joel E BE x L k 8707 SW704 R701 5 R706 SW O 55 0704 Joo Ke DISPLAY Except CA 22 WIRING DIAGRAM TUNER E 0 5 1AD4B10C9640C TUNER CA TUNER Except CA 23 WIRING DIAGRAM POWER AMP CD SWITCH v kd kd 2 N9 C C C lt 2 CNP101 D603 oen R604 C502 2 E 2 g 5 a z ae o Sa 10105 SSVg 10545 509 4 LY 7 ch e L105 C103 19 LOYA lt ovr m POWER AMP CNP105 51 CD SWITC H 24 SANYO SANYO Technosound Co Ltd May 00 2350 BB Printed in Japan Osaka Japan 1 SPECIFICATIONS 1 1 Unit Specifications eee eene 8 1 2 Major Component Specifications ENEE 9 A Indoor Unit EENE
24. Single Processor 58 1 60 57 56 55 5453 52 51 50 17 20 212223 24 Pick up photo diode connection pin Added to FTN Pin to gene 1 PINE RF signal subtracted from FTN1 pin to generate the FE signal E Pick up photo diode connection pin the TE signal Pick up photo diode connection pin TE signal DC component input pin TE PIN which connect the TE signal gain setting resistor between and TE pin 7 signal output pin TSEI TES Track Error Sense comparator input pin The TE signal is thorough a band pass filter 9 501 Shock detection input pin 10 TH Tracking gain time constant setting pin TA amplifier output pin 12 Pin for configuring the tracking phase compensation constant the TD and VR pin 14 JP Tracking jump signal kick pulse amplitude setting pin Pin for configuring the focusing phase between the FD and FA 19 FA Pin for configuring the focusing phase compensation constant and FA pins 20 FA Pin for configuring the focusing phase compensation constant the FAS and FE pins FE signal output pin 22 FE En which connects the FE signal setting resistor between this pin Pick up photo diode connection pin Subtracted from F pin to 27 28 2930 3132 25 26 No PIN NAME Sled servo off control input pin Pin for setting the function on off which function is tracking gd following to RF level Switch control pin for
25. between indoor and outdoor unit e n H1 Compressor motor is overloaded Tt e Tt e H2 Compressor motor is locked Tt Ill e Tt Tt Wl H3 Compressor current detection circuit is abnormal fe Yt Yr Tt F4 F9 Thermistor in outdoor unit is either open circuited or short circuited NOTE Xt LED lamps ON lights up LED lamps OFF LED 2 LED 1 Fig 30 A REFRIGERANT SHORTAGE Note particularly that a shortage of refrigerant is only shown by the outdoor P C B Ass y LEDs and the Alarm Message does not appear on the Indoor Remote Control Unit The compressor keeps running even when the refriger ant is less so when you find the LED indication on the outdoor P C B stop the air conditioner immediately to avoid the compressor damage SM700064 45 4 SERVICE PROCEDURES 4 1 5 5 What Do for Each Alarm Message This section gives a procedure to track down and fix most air conditioner problems For each Alarm Message that might appear on the remote control unit when a problem hap pens you have a specific procedure to follow There are 13 Alarm categories explained and some have two sets of procedures A and B which may take up two different pages Nothing is displayed on the remote control unit and the air conditioner does not operate 1 A Does DC 12V appear between No 2 12 and No 3 GND of Refer to 1B 3P terminal plate for remote the n
26. coil temp C1 TH6 cannot be F6 detected Outdoor coil temp C2 TH7 cannot be F7 detected Outdoor air temp TH5 cannot be detected F8 Fault with Compressor motor is overloaded H1 Compressor 5 00 ps Compressor motor is locked H2 and its Circuit Compressor current detection circuit is abnormal H3 Either a crossed wiring or tubing between the indoor and outdoor unit is detected H7 The serial communication errors are errors in the control signal which goes between the outdoor and indoor units or between the Remote Control Unit and Indoor unit 44 5 700064 4 SERVICE PROCEDURES 4 1 4 4 LED Indication on the Outdoor Unit s P C B Ass y If something goes wrong with the outdoor unit LED lamps on the outdoor P C B Ass y light up to show the cause of the trouble in addition to the Alarm message on the remote control unit p s pu Es Possible cause of trouble e e Normal operation e e Tt No Display Refrigerant shortage e 6 Recieving fault of serial signal e e xt Tt E7 Transmitting fault of serial signal 2 Thermal protector either in outdoor fan motor or compressor is working Tt e Yt P3 Discharge gas temperature is abnormal Yr Yr e P4 High pressure switch is working e o3 it i P5 Negative phase protector is working Tt e e e P6 Wrong model combination
27. exchanger coil and other electrical components SM700064 77 5 INSTRUCTION MANUAL Remote Control Unit 299908019 MODE button Temperature FAN AIM button setting buttons FAN SPEED SWEEP button button TIME SENSOR GA V S RR TIMER button Timer setting buttons TEST RUN button Operation lamp ON OFF operation button This button is for turning the air conditioner on and off ON OFF operation button Operation lamp MODE button This lamp lights when the appliance is turned on Use this button to select one of the following five operations AUTO Used to automatically set cooling or heating operation temperature range 17 27 C HEAT Used for normal heating operation temperature range 16 26 C DRY Used for dehumidifying without changing the room temperature temperature range 18 30 C COOL Used for normal cooling operation temperature range 18 30 C FAN Used to run the fan only without the heating or cooling operation Temperature setting buttons Press this button to increase the set temperature Press this button to decrease the set temperature FAN SPEED button AUTO The air conditioner automatically decides the fan speed High fan speed MED Medium fan speed LO Low fan speed TIMER button Use this button while the unit is operating
28. fuse s on P C B Ass y in the outdoor unit blown YES Replace the fuse Does cut off or contact fault occur to either lead wires or connector 6P RED in the outdoor unit Repair either the wiring or connector 6P Replace the P C B Ass y in the outdoor unit 037 0089 SM700064 53 4 SERVICE PROCEDURES 4 1 5 9 3 CHECK and H7 are displayed on the remote control unit Q Crossed wires or refrigerant supply tubes between indoor and outdoor units When the group of units are installed is there any miscrossed inter unit control wiring or refrigerant tubing between the indoor and outdoor units Rewire or retube so the outdoor and indoor units are correctly connected to each other Charge with proper amount of gas Replace the valve 038 0059 A shortage of refrigerant Is the electronic refrigerant control valve working all right CHECK and are displayed on the remote control unit Incorrect capacity matching Is the switch on P C B Ass y in both indoor and outdoor unit properly set Indoor P C B Ass y S3 Outdoor P C B Ass y S1 Refer to 4 2 6 Checking the P C B Ass y Adjust the setting of switch properly YES Replace either the indoor or outdoor unit to choose the proper combination Is the combination between indoor model and outdoor model
29. heater 240 V 25 W Refrigerant amount at shipment R 22 3 700 Safety devices Overload relay models Internal type Operating temperature open 120 5 Close C 98 11 High pressure switch ACB JB22 Set pressure OFF kg cm 30 22 ON kg cm 24 2 0 Fan Number diameter Fan motor Model Nominal output W mm Propeller 1 0460 SFC6T 71B5P 70 W No of pole rpm 230 V High Coil resistance Ambient temperature 20 C Safety device 6 778 rpm BRN WHT 80 4 VLT YEL WHT VLT 27 4 YEL PNK 10 52 6 30 Operating temperature 130 8 79 15 Run capacitor 440V 5 uF Heat exchanger Coil Aluminum plate fin Copper tube Rows fin pitch 2 2 0 Face area 0 616 SM700064 10 1 SPECIFICATIONS 1 3 1 3 Other Component Specifications Indoor Unit ATR III265Q Outdoor Unit 125 Power Transformar Rated Primary V Hz AC 230 V 50Hz AC 230 50Hz Secondary 112 03 20 F 10V 1 0A 13 503 V 0 95 A 10V 0 2A 10 8 0 3V 0 32 WHT WHT 44 8 1 28 167 4 1 RED RED 0 28 YEL YEL 144 145 145 PBC 41E S14 PBC 41E S4 209 40 1 5 10 9 9 5 10 24 4 5 20 6 5 5 5 19 3 5 30
30. once every six months If the filter gets blocked the efficiency of the air conditioner drops greatly The frequency with which the filter should be cleaned depends on the environment in which the unit is used 1 Take hold of the finger hold on the air intake grille and press it to the rear and the grille will open downward 2 Take hold of the finger hold on the air filter first lift it and then pull it toward you to release it from the catch Air intake grille Air filter finger hold Use a vacuum cleaner to remove light dust If there is sticky dust on the filter wash the filter in lukewarm soapy water rinse it in clean water and dry it 1 Certain metal edges and the condenser fins are sharp and may cause injury if handled improperly special care should be taken when you clean these parts 2 Periodically check the outdoor unit to see if the air outlet or air intake is clogged with dirt or soot 3 The internal coil and other components of the outdoor unit must also be cleaned periodically Consult your dealer or service center Check the indoor and outdoor unit air intakes and outlets for blockage if there is a blockage remove it Operate the fan for half a day to dry out the inside Disconnect the power supply and also turn off the breaker Ciean the air filter and replace it in its original position Outdoor unit internal components must be checked and cleaned periodically Contact your local dea
31. plug Replace P C B Ass y in the indoor unit 55 Connect firmly 141 0070 SM700064 4 SERVICE PROCEDURES 4 1 6 0 0 9 i Procedures for When a Specific Component Does Not Work at All Indoor fan is not running at all Is fan motor capacitor normal Is there voltage output of P C B Ass y for fan motor Check resistance of fan motor winding OUT Replace the fan motor Flaps in indoor unit s air outlet does not operate even if you press SWEEP button Is auto louver motor normal Replace the motor YES Replace the capacitor Replace the P C B Ass y in the indoor unit 041 0059 NO is 15P connector socket RED being attached to panel connected firmly with 15P plug Connect firmly Replace P C B Ass y in the indoor unit Flap does not operate if you press FAN AIM button When you press 142 0070 SWEEP button flap operates NO Is limit switch normal Replace the switch Is 15P connector socket RED being attached to panel connected firmly with 15P plug Connect firmly Replace P C B Ass y in the indoor unit 143 0070 SM700064 56 4 SERVICE PROCEDURES 4 1 6 3 5 4 Compressor motor is not running at all Is compressor motor magnetic contactor 52 normal Check resistance of compressor motor winding OUT Replace the compressor Replace t
32. spindle 8cm 12cm mode EFBAL E F balance control signal input FSTA Focus search control signal input LASER Laser on off control input 40 Input pin for tracking jump signal from DSP 41 TGL Input pin for tracking gain control signal from DSP Gain is lo TGL is high Input pin for tracking off control signal from DSP Tracking ser when is high Output pin for TES signal to DSP 44 HFL The High Frequency Level is used to determine whether the m is positioned over a pit or over the mirrored surface 45 Input pin for CLV error signal from DSP 48 RF RF gain setting and EFM signal 3T compensation constant set along with the RF pin 49 SLC Slice Level Control is an output pin that control the date slice by the DSP for the RF wave form 54 TBC Tracking Balance Control E F balance adjustment variable ra setting pin 55 FSS Focus Search Select focus search mode search search reference voltage switching pin capacitor connection pin for reference voltage Reference voltage output pin Disc defect detection time constant setting pin 60 RF signal peak hold capacitor connection pin RF signal bottom hold capacitor connection pin 62 LDD circuit output pin 63 LDS APC circuit input pin WIRING CONNECTION L CH SPEAKER R CH SPEAKER WHITE BLACK RED BLACK REC SWITCH P W B R P HEA
33. the control circuit stops the compressor for 3 minutes the compressor is not controlled by the room sensor Thermo ON When room temperature goes to 2 C 1 C when set on body sensor above the set temperature T 2 C or 1 when set on body sensor Compressor gt Thermo OFF When the room temperature is equal to or below the set temperature Compressor OFF 16 If you change the operation mode HEAT DRY COOL or during the cooling cycle For 5 minutes after the compressor is first turned on and for 3 minutes after it is turned off B Heating REMOTE CONTROL SENSOR THERMO ON SE 2 PROCESSES AND FUNCTIONS 2 1 B THERMO ON THERMO OFF THERMO OFF THERMO ON T 1 C SET TEMP T C THERMO OFF THERMO OFF BODY SENSOR THERMO ON THERMO ON THERMO ON 41 C SET TEMP 4 C SHIFT H T 2 C SET TEMP T C MORE THAN MORE THAN 3 MINU 5 MINUTES 3MINUTES COMPRESSOR OFF ON OFF ON orr x1 OUTDOOR FAN 1 x ies OFF ON OFF ON or SET SPEED 2 INDOOR FAN 2 STANDBY OFF 31 C INDOOR HEAT EXCH COIL TEMP E2 25 C SOLENOID COIL 4 WAY TEMP OPERATION BUTTON 27 C 17 ON REVERSING CYCLE 1 Refer to 2 4 Outdoor Fan Motor Control 2
34. to switch between timer settings TIMER OFF The air conditioner stops at the set time TIMER ON The air conditioner starts at the set time PROGRAM TIMER The air conditioner stops and starts or starts and stops at the set times every day 5 700064 78 5 INSTRUCTION MANUAL Remote Control Unit continued TEST RUN button This button is used only when servicing the air conditioner CAUTION Do not use the TEST RUN button for normal operation FAN AIM button Use this button to set the airflow direction at a specific angle Airflow direction is displayed on the remote control unit Operation mode Number of airflow direction settings COOL or DRY 3 HEAT or FAN 5 AUTO Cooling mode 3 Heating mode 5 CAUTION e cool mode and dry mode if the flaps are set in a downward position condensation may form and drip around the vent e Do not move the flap with your hands SWEEP button Use this button to make the airflow direction sweep to up and down automatically airflow direction is displayed CHECK CHANGE button Use this button to change the time indication for the timer or real time clock This button works regardless of whether the unit is turned on or off Timer setting buttons HH Press this button to set the hours indication for the timer or real time clock MM Press this button to set the minutes indication for the timer or real time clock UNI
35. 0 Monitoring time 25 minutes 8 minutes is required to detect frost in the freezing UP range Defrosting Release of defrosting Timing Chart for Defrosting OUTDOOR COIL TEMP C1 C Y RELEASE OF Freezing UP RANGE Refer to timing chart Occurs either when the temperature of C1 the outdoor heat exchanger coil has reached 10 C or above or when the maximum defrosting time 9 minutes has elapsed Fig 16 016 0059 1MINUTE pa 9 MINUTES a MINUTE COMPRESSOR SOLENOID COIL 4 WAY VALVE OUTDOOR FAN H OR L INDOOR FAN SET SPEED STANDBY INDICATOR Defrosting Release of Fig 17 Start Defrosting 017 0059 During the defrost cycle STANDBY appears on the remote control unit Cold Draft Prevention may operate occasionally 5 700064 26 2 PROCESSES AND FUNCTIONS 2 11 2 11 4 Way Valve Solenoid Control The basic function of the 4 way valve is to direct the refrigerant in the correct direction according to the Operation Mode COOLING or HEATING selected Refer to Section 1 5 Refrigerant Flow Diagram The following two charts show conditions of the controls and functions listed in the left hand column when the solenoid is ON or OFF Chart A on this page shows the relationships when the temperature control is in NORMAL mode and Chart B on the next page shows th
36. 03 D0501 D0502 D0503 D0504 D0505 D0506 D0508 D0551 D0552 D0601 D1301 D1302 D1304 FU001 IC201 L0501 L0502 L0503 L0504 L0505 L0506 L0805 L1601 L1603 L1604 L1605 N1101 N1103 N1105 Q0201 Q0501 Q1101 Q1301 Q1302 Q1601 SW401 U0101 U0201 U0301 X1301 or ZD501 PART NO 403 061 9607 403 061 9607 403 060 5204 403 057 1905 403 057 1905 403 057 1202 403 059 0708 403 060 5204 403 060 5204 403 059 4409 403 060 8908 403 063 0800 403 060 5204 403 057 1905 403 057 1905 403 057 1905 645 020 6771 645 042 4274 645 027 7900 645 014 1225 645 042 4281 645 016 9250 645 016 9250 645 016 9250 645 016 9250 645 016 9250 645 016 9250 645 016 9250 645 016 8956 645 016 8956 645 016 8956 645 025 1689 645 025 1689 645 016 8956 645 014 1447 645 041 6408 645 041 6422 645 041 6422 645 041 6422 645 041 6422 645 041 6422 645 041 6422 645 038 2307 645 041 6422 645 042 4243 645 042 4243 645 041 6422 645 036 2118 645 017 2052 645 016 9342 645 016 9205 645 036 1937 645 025 1634 645 025 1641 645 025 1641 645 025 1627 645 037 2896 645 036 1913 645 025 1580 645 036 4105 645 036 3573 645 041 6552 645 025 1696 DESCRIPTION POLYESTER 0 047U J 50V CD MAIN POLYESTER 0 047U J 50V CD MAIN POLYESTER 3300P J 50V CD MAIN POLYESTER 0 1U J 50V CD MAIN POLYESTER 0 1U J 50V CD MAIN POLYESTER 0 01U M 50V CD MAIN POLYESTER 0 018U M 50V CD MAIN POLYESTER 3300P J 50V CD MAIN POLYESTER 3300P J 50V CD
37. 041 4596 TACT SW KTL TC 0103 F B SW705 645 041 4596 TACT SW KTL TC 0108 REPEAT SW706 645 041 4596 TACT SW KTL TC 0103 F F REC SWITCH P W BOARD ASSY REF NO 72 C0203 C0204 C0205 C0206 C0225 C0226 C0401 CN201 CP202 CP203 0401 00401 SW201 ZD401 PART NO 614 312 9394 403 056 8905 403 056 8905 403 063 0800 403 063 0800 403 060 6904 403 060 6904 403 061 9003 645 017 2045 645 038 0730 645 042 4267 645 014 1058 645 025 1665 645 014 1133 645 017 1703 DESCRIPTION ASSY PWB REC SW AC BIAS Only initial POLYESTER 1000P M 50V PRE AMP POLYESTER 1000P M 50V PRE AMP POLYESTER 6800P M 50V POLYESTER 6800P M 50V POLYESTER 3300P M 50V POLYESTER 3300P M 50V POLYESTER 4700P M 50V AC BIAS 4P WAFER R P HEAD 3P D SHIELD WIRE UL CNP202 TO MAIN CN202 12P F WIRE UL CNP203 TO MAIN CN203 BIAS OSC AC BIAS AHK809461 TR 2SC3330U AC BIAS PUSH SWITCH ZENER AC BIAS AMP P W BOARD ASSY REF NO 73 C0113 C0114 CN006 CN010 D0509 D0510 D0603 IC101 JACK1 L0103 L0104 Q0101 Q0102 SW101 SW501 VR101 PART NO 614 312 9356 645 041 6972 403 057 1905 403 057 1905 645 025 1917 645 027 7658 645 016 8956 645 016 8956 645 016 8956 645 036 1906 645 036 4372 645 041 6422 645 041 6422 645 025 1658 645 025 1658 645 026 5563 645 020 3176 645 038 0716 DESCRIPTION ASSY PWB AMP POWER Only initial HEAT SINK FOR 101 POLYESTER 0 1U J 50V POLYESTER 0 1U J 50V 4P WAFER MOTOR 3P WAFER SPK SW DIODE PR
38. 063 0059 D Indoor fan motor thermal protector 49 Indoor unit Disconnect connector WHT which leads to the indoor fan motor FMI Check the socket s terminals between No 3 GRY lead wire and No 4 GRY lead wire 2 Compressor motor thermal protector 49C Outdoor unit Disconnect both 8P connector WHT 12 connector WHT in the outdoor unit Check terminal between 8P plug s No 3 GRY lead wire and 12 socket s No 10 GRY lead wire Outdoor fan motor thermal protector 49FO Outdoor unit Disconnect both 8P connector WHT which leads to the outdoor fan motor FMO Check socket s terminal between No 3 GRY lead wire and No 4 GRY lead wire High pressure switch 63 Outdoor unit Disconnect 2P connector WHT which leads to the high pressure switch 63PH Check the socket s terminal between No 1 BLK lead wire and 2 BLK lead wire 5 700064 65 4 SERVICE PROCEDURES 4 2 3 o 3 Checking of Electrical Parts D Power transformer TR1 Indoor unit Measure the coil resistance Primary Measure the resistance between No 1 and No 2 WHT lead wires terminals of 2P WHT socket jointed to power transformer Secondary 10 8V Measure the resistance between No 1 and No 2 YEL lead wires 13 5V Measure the resistance between No 3 and No 4 BRN lead wires 11 2V Measure the resistance bet
39. 1 2 312 3 3 2 152 lt 007 110 6 110 4 CONTROLLER POW X252GH cowwecroe 4 3 a i P 4 3 2 1 5 CONNECTOR ory o Switce sv AUTO LOUVER MOTOR RIED P 1TzT3T4 conwecron s ii 2 3 4 4P cen PROOF HEATER AG JP002 HEAT PUMP COOL 4P003 LL L 059 GRY YEL ORG s sT4 s 2 1 cowwecron 5141 3 21 5 GRY YEL ORG ELECTRO REF CONTROL VALVE cose JPO08 R084 oO 6 C SHIFT 006 GROUP ADRESS ni THERMISTOR ROOM TEMP SENSOR TH2 THERMISTOR seo BLK Gv ECH TEMP REO BLK SENSOR E1 TH3 THERMISTOR BLK SENSOR E2 Fig 27 SM700064 3 ELECTRICAL DATA 3 3 3 3 Indoor Unit P C B Ass y Component List POW X252GH SYMBOLS DESCRIPTION SPECIFICATIONS SYMBOLS DESCRIPTION SPECIFICATIONS SYMBOLS DESCRIPTION SPECIFICATIONS SYMBOLS DESCRIPTION SPECIFICATIONS C001 CAPACITOR 2200 F 20 25 C081 CAPACITOR 0 001uF 10 50v PC002 PHOTOCOUPLER PC8178 2064 RESISTOR CERMET 4 7K
40. 8P terminal plate in the outdoor unit Check the power supply wires are correctly connected between terminal No 1 and 2 on the 3P terminal plate in the indoor unit and terminal No 1 and 2 on the 8P terminal plate in the outdoor unit Check inter unit wiring 0 Check that inter unit control wiring DC low voltage is correctly connected between the indoor unit and outdoor unit Power Supply 50 Hz 3 phase 380 400 415V Indoor Unit Outdoor Unit B EE Inter unit TO power wiring Line voltage 2 hese EEN 8 v Earth Inter unit e 4 Power control wiring supply Low voltage 7 2 2 R OO 6 5 23 2 7 T SE A Neutral Remote control line unit 131 1070 Fig 29 Check power supply Q Check that voltage is within the specified range 10 of the rating Check that power is being supplied AN WARNING If the following troubleshooting must be done with power being supplied be careful about any uninsulated live part that can cause ELECTRIC SHOCK Check the lead wires and connectors in indoor and outdoor units Check that the coating of lead wires is not damaged 1 Check that lead wires are firmly connected at the terminal plate Q Check that wiring is correct SM700064 241 4 SERVICE PROCEDURES 4 1 2 2 General Troubleshooting Flow Chart Diagnosis and Remedy When you have found a
41. 8W 001 RELAY G2R 1 12V CAPACITOR 0 022 50V CN013 R005 RESISTOR OXIDE 820n 5 2w RY002 RELAY G2R 1 12V CAPACITOR 47uF 20 16V CN014 CONNECTOR A ko 5 1 8W RY003 RELAY G2R 1 12V CAPACITOR 0 001uF 10 50V CNO16 CONNECTOR 4 o 5 1 8W 006 RELAY GVE 12HME K CAPACITOR 0 01uF 10 50 CNO18 CONNECTOR J8263 0414 2 1KQ 5 1 8W 008 RELAY GVE 12HME K C023 CAPACITOR 0 001 F 10 50V CN019 CONNECTOR JB5P SHF 1AA R009 1 5Kn 5 1 4W GVE 12HME K C024 CAPACITOR 22 F 20 50V CN021 CONNECTOR J8263 0214 1 5600 5 1 8W GVE 12HME K CAPACITOR 47 10 50 CNO22 CONNECTOR J82638 0202 G RESISTOR CERMET 5600 5 1 8W RYO11 GVE 12HME K CAPACITOR 15PF 5 50v CN023 CONNECTOR 182638 0202 R012 RESISTOR CERMET 4 yo 5 1 8W RY012 RELAY G2R 1 12V CAPACITOR 15PF 5 50V CN024 R013 RESISTOR CERMET ko 5 1 8W S001 SWITCH SSSU12 CAPACITOR 0 001 F 10 50 CNO25 CONNECTOR R014 RESISTOR CERMET 4 o 5 1 8W S002 SWITCH 5556 14 CAPACITOR 0 O01uF 10 50V CNO28 CONNECTOR J8180 6P R015 RESISTOR CERMET 1 8 5 1 4W 5003 SWITCH SJK51120 0404 CAPACITOR 0 01 F 10 50v 0001 DIODE DSK10E BT RO16 RESISTOR CERMET 5 6Kn 5 1 4W SWITCH SSSGM23 C033 CAPACITOR 0 01 F 10 50 0002 iKn 5 1 4W SWITCH SKDS10 412 C034 CAPACITOR 0 01 F 10 50V D004 4 ko 5 1 8W SWITCH SRRQVA S C035 CAPACITOR 0 01 10 50V 0005 DIODE DSK10E BT 4 7 5 1 8W THERMISTOR HO2AR181M265 C036 CAPACITOR 0 001 F 10 50 0006 DIODE SLP 2818 R020 RESISTOR CE
42. CAL DATA 3 1 Indoor and Outdoor Units 3 1 Schematic Diagram 134 AdVITIXNY 2107110 900A8 H9ZSZ2X A0d AVA 8003 431V3H 3573 ANVI 1102 YOOON SOLSINYAHL SOLS IWA3HL WOON AOLSINAZHL S3NAOISNVAL 33A0d 579 394YVHOSIQ NOIS INS3HL 80112 4 2 ONINNNS 801231044 TWWY3HL YOLOW YOOONI HO LORN YOOONI WP 1 10044 Han aoon ony wn LINN 300091 N101d149S30 5708 5 1014192530 S 108MAS SS GKI om es 7 SEL 2 25 55 j H IZGZX MOd LINA 8OOQNI 4004100 Nisa AlddNS 43803 5 700064 34 3 ELECTRICAL DATA 3 2 3 2 Electric Wiring Diagram Indoor Unit POWER SUPPLY TO OUTDOOR UNIT TO OUTDOOR UNIT i ioi TERMINAL PLATE 2P TERMINAL 1 REMOTE CONTROL UNIT RCS T2528H TERMINAL PLATE 3P 2 POVER TRANSFORMER CONNECTOR 2P BLX CONNECTOR P WHT GRN YEL RUMNING CAPACITOR RC1 BRN 11213 41516 71 8 611213141516 7 6 ercwnr gt BRN ORG GRY YEL INDOOR FAN MOTOR 000 MOTOR THERMAL PROTECTOR 40F 1 1 eecred 1 5 3
43. D L J DISPLAY P W B TAPE DECK MOTOR MECHANISUM D SWITCH PHONES Gate SF CN201 CN105 BEER En JACKI CNG 11 2 4 3P 4P CN101 Es LI 2P 2P K CNA CN104 AMP 2 13P P W B CNP102 CN102 13 13 kn CD MAIN P W B CNS m GP CNP103 CN103 Loy 4 4 3 104 1 pos wi FM ROD ANT BLACK CD MECHANISM 6P BATTERY P W B BATTERY Let 2V AC IN 120V 60Hz 230V 50Hz XE 220V 60Hz KR 230 240V 50Hz AU 110 120 220 240V 50 60Hz PA VOLTAGE SELECTOR Y i E i 10 VOLTAGE OF IC amp TRANSISTOR
44. DOOR FAN SPEED x ju d VertyLow L Low H High Fig 9 Heating 18 OUTDOOR AIR TEMP C 14 OUTDOOR FAN SPEED 010 0059 L Low High Fig 10 5 700064 20 2 PROCESSES AND FUNCTIONS 2 5 2 5 Freeze Prevention Cooling Freeze Prevention keeps the indoor heat exchange coil from freezing Freezing reduces the efficiency of the unit and frost buildup on the coil blocks cool air circulation from the indoor unit s fan 3 INDOOR UNIT COIL TEMP 2 J EITHER E1 OR ES 1 1 1 0 2 MINUTES COMPRESSOR ELECTRONIC REF RIG CONTROL VALVE Minimum minutes 011 0059 Fig 11 Chart Explanations and notes This chart shows when the electronic refrigerant control valve opens to regulate the temperature of the indoor unit coil to prevent freezing Freeze prevention is controlled by the temperature of the indoor heat exchanger coil as sensed by either sensor E1 located at the entrance of the coil or sensor E2 located in the middle of the coil Whichever sensor has the lower temperature controls the freeze prevention cycle When the coil temperature falls below 2 C the electronic refrigerant control valve opens in 5 intervals at 30 steps 30seconds until the temperature reaches 3 C If the
45. During Defrosting ENEE 29 2 15 Compressor Current Detection Circuit 222 30 2 16 Dry Operation Dehumidification 9 em 31 2 17 Air Flap Control 92 5 700064 29150 2 PROCESSES AND FUNCTIONS 2 1 A waw C N N csr HTwrrrrr E 2 1 Room Temperature Control The Unit adjusts room temperature by cycling the compressor in the outdoor unit ON and OFF This process is controlled by the thermostat located in the indoor unit The diagrams on this and the next page show how each part of the system acts as the temperature of the room changes and the thermostat calls for the compressor to start thermo ON or stop thermo OFF Diagram A tells about the cooling cycle and Diagram B tells about the heating cycle A Cooling THERMO OFF THERMO OFF ROOM TEMP THERMO ON REMOTE CONTROL SENSOR 1 THERMO OFF THERMO OFF THERMO ON ROOM TEMP THERMO ON BODY SENSOR T 2 C Tim Tse SET TEMP T C MORE THAN MORE THAN MORE THAN 5 MINUTES 3 MINUTES 5 MINUTES 3 MINUTES 5 MINUTES COMPRESSOR Ke OUTDOOR FAN H L OR LL INDOOR FAN DEW PROOF HEATER 1 Refer to 2 4 Outdoor Fan Speed Control 193 0070 Fig 4 Chart Summary and Explanations Once the compressor starts it keeps running for 5 minutes Once the compressor stops it will not start running again for 3 minutes
46. E AMP SW DIODE PRE AMP SW DIODE IC LA4227 ST PHONE JACK EJS 7 1535B BEAD COIL 25UH FCC FOR R111 BEAD COIL 25UH FCC FOR R112 TR 2501936 0 TR 2501936 0 SWITCH EX 13G A BASS W LOCK SWITCH SK43D01 G9 CD TAPE TUNER ROTARY VOL XV0141 CD MAIN P W BOARD ASSY REF NO 74 74 C0056 C0213 C0214 C0215 C0216 C0301 C0302 C0821 C0822 C1101 C1104 6 PART NO 614 312 9349 614 313 7214 645 014 1355 645 014 2246 645 016 1971 645 025 2037 645 025 2396 645 026 5716 645 036 2675 645 041 6309 403 061 9003 403 061 9003 403 061 9003 403 061 9003 403 061 9003 403 061 9003 403 061 9003 403 057 1202 403 057 1202 403 057 1905 403 060 8908 DESCRIPTION ASSY PWB CD MAIN PRE AMP CA Only initial ASSY PWB CD MAIN PRE AMP Except CA Only initial EYELET AC IN FUSE HOLDER FOR FUSE Except CA FERRITE BAR BAR ANTENNA HOLDER SCREW 3X8 FOR Q501 HEAT SINK NUT M3 FOR Q501 HEAT SINK HEAT SINK B 9298 FOR Q501 ASSY BAR ANT TUNER POLYESTER 4700P M 50V AC BIAS POLYESTER 4700P M 50V POLYESTER 4700P M 50V POLYESTER 4700P M 50V POLYESTER 4700P M 50V POLYESTER 4700P M 50V Except CA POLYESTER 4700P M 50V Except CA POLYESTER 0 01U M 50V TUNER POLYESTER 0 01U M 50V TUNER POLYESTER 0 1U J 50V CD MAIN POLYESTER 0 033U M 50V CD MAIN PARTS LIST REF NO C1106 C1107 C1108 C1109 C1113 C1114 C1115 C1116 C1121 C1123 C1125 C1130 01142 C1144 C1301 C1302 CN005 CN020 CN104 CN202 CN2
47. G 9 B Outdoor Unit ENEE 10 1 3 Other Component Specifications ENEE 11 1 4 Dimensional Data ce eerte rtt _________ 12 A Indoor Unit nennen 12 B Outdoor Unit EEN 13 1 5 Refrigerant Flow Diagram eee 14 1 6 Operating Range ENEE 14 SM700064 1 SPECIFICATIONS 1 1 1 1 Unit Specifications SPW T252GH5 MODEL NO Indoor Unit Outdoor Unit SPW C252GH8 POWER SOURCE 380 400 415 V 3 g 50 Hz PERFORMANCE Cooling Heating Capacity BTU h 25 000 27 000 7 33 7 91 Air circulation Hi Me Lo m h 1 140 1 020 840 Moisture removal High Liters h 4 2 ELECTRICAL RATINGS voltage rating V 380 400 415 Available voltage range V 342 456 Running amperes A 47 47 45 47 45 4 3 Power input w 2 740 2 770 2 790 2 630 2 660 2 670 Power factor 86 86 87 85 85 86 E E R 9 15 9 02 8 90 Starting amperes 27 29 30 FEATURES Controls Temperature control Microprocessor LC thermostat Timer Fan speeds Indoor Outdoor Airflow direction Indoor Air filter Compressor Refrigerant Amount charged at shipment zl am 5 0 50 5 ON OFF 24 hours amp Program 3 and Automatic control Automatic Remote control Washable easy access
48. LOAD PREVENTION FUZZY CONTROL CONTROL OUTDOOR FAN SPEED ELECTRONIC REF CONTROL VAVLE GE REFER TO 2 13 Electronic Refrigerant Control Vaive 013 0059 Fig 13 Chart Explanations and notes This chart shows how the outdoor fan speed and the electronic refrigerant control valve react to coil temperature to keep the indoor heat exchanger coil from overloading When sensor E2 rises above 60 C the electronic refrigerant control valve opens at 50 steps 30 seconds until E2 falls below 59 C Sensor E2 is located in the middle of the indoor unit heat exchange unit When sensor E2 rises above 62 C the control circuit stops the outdoor fan motor SM700064 22 2 PROCESSES AND FUNCTIONS 2 8 2 8 Discharge Temperature Control Cooling and Heating This function prevents the compressor motor from burnout by overheating 110 100 T DISCHARGE GAS TEMP go COOL HEAT 88 85 80 OUTDOOR FAN SPEED COMPRESSOR ELECTRONIC REF CONTROL VALVE Alarm P3 appears 014 0059 Fig 14 Chart Summary and Explanations Discharge temperature is controlled by TH8 discharge gas sensor in COOLING mode and TH4 discharge gas sensor in HEATING mode When the temperature rises above 90 C the electronic refrigerant control valve opens at 50 steps 30 seconds until the temperatur
49. M 1 11 0 V Vcc2 7 GND 1 125 V 1 25 V AM RF 2 5 7 V OUT 1 8 0 V IN 2 2 125 V 125 V REG 3 10 5 V 6 1 9 12V NF 2 3 34 V 39 V AM OSC 4 12V NF 1 10 10 5 V B S 2 4 37 V 39 V 1 5 DV IN 1 11 57 V OUT 2 5 37V 39 V FM MIN 6 11 0 V RIPPLE 12 12 0 V 6 DV DV GND 1 7 3 7 V 3 9 V AM MIX 8 DV DV TUN LED 5 A A TRANSISTOR VOLTAGE TABLE 10 1 25 V 12V FM IF INPUT 11 12V 12V AM IF INPUT PATRS NO B IS u FM DET qz 07 ov ov 14 2 3 PILOT DET Q 101 0 65 V oy 15 3 0 V 0 V PHASE COMP Q 102 065 V 16 10 V 10 V L ch OUTPUT Q 501 93 V TUS V BN Q 701 DV 0 V 3 95 V 17 10 V 10 V R ch OUTPUT 18 0 6 V 0 6 V MPX INPUT Q 1101 und m 280 19 12 V 0 15 AM FM IF OUTPUT Q 1301 LON 0658 50 085 V 37V FM OSC Q 1302 0 55 V 49 V 49 V A 1601 80 V 49 V 87 V 21 0 9 V 39 V VCC 2 22 0 9 V 39 RF OUTPUT Q 702 20 V 12 704 2 0 V 11V 27V 23 DV DV GND 2 24 0 8 V DV EM ANT INPUT WIRING DIAGRAM REC SWITCH DISPLAY O 7120 SW BD R 0 lt S ts ABS S RM Mu t0 E LU lt s 5121 5 alg 5505 9 kao SEI CNP203 CN201 SWITCH OP MODEL 7120 TOT SW703 0701 KEY BOARD R100 PLAY 8 qo op 001 01202 700 A 4 b DSP701 701 0705 WF O m 8 5 LED703 PLAY PAUSE REPEAT O sw O e
50. MORY CD MECHANISM DA11 13930400 DA11 DESCRIPTION SCREW CASS DOOR EJECT GEAR SCR 2 6X6 PLAY KNOB TO KEY SCREW F PANEL TO PCB SCREW SPK CLIP SCREW 2X4 REC SW BD TO CASS DECK SCREW CASS DECK TO F CAB SCREW 3X8 VOL PCB TO CD BKT FIBER WASHER HEADPHONE JACK SCREW HEADPHONE JACK SCR 3X8 PCB BKT TO VOL PCB SCREW 3X8 MAIN PCB TO CD BKT SCREW 3X8 CD OPEN SW SCR 2 6X8 FOR CD OPEN SW L BKT SCR 2 6X8 FOR CD GEAR SCR 2 6X8 CD MECH TO CD BKT SCREW CD MECHA SCREW DIAL BKT TO PCB SCREW 3X8 TUNER BD TO BKT SCREW TUN KNOB amp TUN GEAR SCREW PWR TRANS SCREW FOR AC LINE CORD FIBER WASHER AC LINE CORD SCR 2 6X8 FM ANT SPRING SCR 3X20 FOR REAR CAB TO F CAB SCR 3X35 REAR CAB TO F CAB SCREW REAR CAB TO CD BKT SCR 3X8 FM ANT TO REAR CAB PARTS LIST ELECTRIC PARTS REF NO PART NO DESCRIPTION 51 645 036 2835 4 SPK W SIL CAP 52 645 037 2889 PWR TRANS CSA APP W APP FUSE CA 52 645 039 6830 PWR TRANS CSA APP W APP FUSE XE AU 52 645 037 8423 PWR TRANS CSA APP W APP FUSE PA 53 645 020 3534 ROD ANTENNA 54 645 036 2019 CORD UL 54 A 645 037 8454 CORD UL 54 A 645 022 1576 AC CORD UL APP AU 54 645 037 9468 AC CORD UL 58 A 645 042 6520 VOLTAGE SELECTOR PA 645 026 5648 FERRITE CORE FCC PWR TRANS SEC W 645 026 5648 FERRITE CORE FCC SPK WIRE 645 026 5648 FERRITE CORE FCC FOR CN103 645 041 6446 3P J WIRE AWG26UL SPK TO CN10 645 027 8020 J WIRE AWG26UL MOTOR TO CN3 645 041 6453
51. OM TEMP ROOM TEMP C 42 C 1 SET TEMP SET TEMP INDOOR FAN INDOOR FAN SPEED SPEED i 5 i KR H High Medium L Fig 7 Chart Explanations and notes Each time the fan speed changes it stays at the speed it changes to L M or H for at least 3 minutes even if during that time the temperature changes to another speed s range B Heating When set on body sensor When set on remote control sensor SET TEMP SET TEMP x 1 ROOM TEMP ROOM TEMP C C 1 INDOOR INDOOR SPEED SPEED H W L 145 0070 Fig 8 Chart Explanations and notes 3 Each time the fan speed changes it stays at the speed it changes to L M or H for at least 1 minute even if during that time the temperature changes to another speed s range SM700064 19 2 PROCESSES AND FUNCTIONS 2 4 2 4 Outdoor Fan Speed Control To optimize the performance of air conditioner the outdoor fan speed is selected automatically according to the outside temperature Q Note that in both Cooling and Heating modes the fan comes on at first at high speed H mode for 5 seconds Since outdoor conditions sometimes make it difficult for the fan to start this sudden surge of power may be necessary These charts show how the outdoor fan speed changes with the change outdoor temperature A Cooling OUTDOOR AIR TEMP C OUT
52. RMET 4 o 5 1 84 TH003 THERMISTOR H61GO6AR150M C037 CAPACITOR 0 001 F 10 50 0007 DIODE 1818 15Kn 1 1 10 001 VARISTOR ERZC140K681W C038 CAPACITOR 0 001 F 10 50V 5 1 8W X001 CRYSTAL AT 51 10M C039 CAPACITOR 0 001 F 10 50 D010 DIODE DSK10E BT Roe9 RESISTOR CERMET 47Kn 5 1 8W C040 CAPACITOR 0 001 F 10 50 D011 RO30 RESISTOR CERMET 47Kn 5X 1 8V C041 CAPACITOR 0 001uF 10 50 0013 010 05B010 TA 8031 RESISTOR CERMET 47Kn 5 178w CAPACITOR 0 001uF 10 50V 2 parlo CAPACITOR 0 001 10 50 0040 47KQ 5 1 8 CAPACITOR 0 O22 uF 50V D041 DIODE DSK10C BT RESISTOR CERMET 5 178 CAPACITOR 47uF 20 25V D042 DIODE DSK10C BT R035 RESISTOR CERMET 47 5 1 8W CAPACITOR 0 001uF 10 50V 0043 DIODE 058010 R036 i10Kn 5 1 8W C048 CAPACITOR 0 01 F 10 50 8D001 BRIDGE DIODE DBA10C R037 10 5 1 8w 20 25V 809 RESISTOR CERMET 10ko 5 1 4w C057 CAPACITOR 0 O22uF 50V 100 5 1 8W CAPACITOR F001 R041 RESISTOR CERMET 4 3kn 1 1710 CAPACITOR 100uF 20 16V HS001 HEAT SINK T2200 CAPACITOR 0 047 F 10 50v 1C001 IC L7805ML RO43 RESISTOR CERMET 33Kn 1 1 10W CAPACITOR 0 022 4F 10 50V tcooz 17812 5 4 7 1 1 10W CAPACITOR 0 O47 uF 10 50 Roas RESISTOR CERMET 4 7K 1 1 10W C063 CAPACITOR 0 022uF 10 50v ico ic 1 1 8V C064 CAPACITOR 0 047uF 10 50 68kn 1 1 8W C065 CAPACI
53. Refer to 2 2 Cold Draft Prevention Heating 133 0070 Fig 5 Chart Summary Explanations Once the compressor starts it keeps running for 5 minutes Once the compressor stops it will not start running again for 3 minutes If you change the operation mode HEAT DRY COOL or FAN during the heating cycle the control circuit stops the compressor for 3 minutes For 5 minutes after the compressor is first turned on and for 3 minutes after it is turned off the compressor is not controlled by the room sensor When set on remote control sensor Thermo ON When room temperature is equal to or below the set temperature Compressor ON Thermo OFF When the room temperature is 1 C above the set temperature T 7 19 Compressor OFF When set on body sensor NOTE In case of Body sensor operating temperature is shifted to setting temperature 4 C and the difference is set to 3 C SM700064 17 2 PROCESSES AND FUNCTIONS 2 2 2 2 Cold Draft Prevention Heating Cycle The cold draft prevention function controls indoor fan speed so a strong draft of cold air will not blow out before the indoor heat exchange coils have warmed up Q STANDBY shows on the remote control unit when the indoor fan speed is LL very low or OFF This condition happens in the following 3 cases During Thermo OFF refer to 2 1 B Room Temperature Control Heating During the defrosting operation refer to 2 10 Defrosting C
54. Replace the P C B Ass y the Remote Control Unit and indoor unit been cut off Replace the wire The RED lead wire between the YES in the indoor unit 139 0070 CHECK and E1 E2 or E3 are displayed on the CONTROL PANEL Remote Control Unit and indoor unit is loose or broken Check the Remote Control Unit by using selfdiagnostic function Refer to 4 1 7 E Checking the Remote Control Unit for correct operation Is microprocessor affected by YES electric interference Replace the P C B Ass y in the indoor unit 47 Rewire the lead wire correctly Replace the Remote Control Unit e Remove the electric noise generation source Replace the lead wires being attached to Remote Control Unit for shielded one dde SM700064 4 SERVICE PROCEDURES 4 1 5 CHECK and E4 are displayed on the remote control unit Are the inter unit control wiring between indoor and outdoor unit wired properly Refer to Fig 28 Are the wires loose or broken at each 2P terminal plates Rewire the wiring properly Be sure the terminal plates are clean and tight YES Measure the voltage between No 1 and No 2 of 2P terminal plate in the outdoor unit Is the pointer of multimeter about DC 12V 2 Measure the voltage of the outdoor power transformer s secondary 4P T11 connector Is the proper DC v
55. SCOPE AC EVM ooo 000 our FIG 4 5 FM RF TRACKING ADJUSTMENT Signal Generator FM SG OSCILLOSCOPE BAND STEP SING ADJUST FOR ADJUSTMENT FRE 1 600KHz MAXIMUM ANT COIL SENSITIVITY AM 2 1400KHz MAXIMUM TC4 PVC SENSITIVITY TRIMMER 3 REPEAT STEP 1 AND 2 SEVERAL TIMES Connects to the FM ANT JACK FM IN through the dummy BAND STEP SING ADJUST FOR ADJUSTMENT FRE 1 90MHz MAXIMUM L802 SENSITIVITY FM 2 106MHz MAXIMUM TC2 PVC SENSITIVITY TRIMMER 3 REPEAT STEP 1 AND 2 SEVERAL TIMES TAPE DECK ADJUSTMENTS 1 HEAD REPLACEMENT After replacement demagnetize the heads by using a degausser Be sure to clean the heads before attempting to make any adjustments All wiring should be returned to the original position after work is completed 2 HEAD AZIMUTH ADJUSTMENT 1 Load the test tape VTT 703 etc 10 kHz for azimuth adjustment 2 Press the PLAY button 3 Use a cross tip screwdriver to turn the screw for azimuth adjustment so that the left and right output are maximized 4 Press the STOP button 5 After completion of the adjustment use thread lock TB 1401B to secure the azimuth adjustment screw TEST TAPE 3 MOTOR SPEED ADJUSTMENT 1 Insert the test tape TCC 119 etc
56. SNL 116 872 Or 061 1116 0 21 MOVE ONIGNL 111 0064 Fig 1 5 700064 EL 1 SPECIFICATIONS 1 4 B B Outdoor Unit SPW C252GH8 J3 9 5 lo gt R 4 13 37 FOR ANCHOR BOLT 65 70 870 _ 97 300 TUBING ENTRY TUBING ENTRY Dimension mm Refrigerant gas line Wide tube O D 15 88 5 8 Sa MEWA Refrigerant liquid line Narrow tube 4 O D 6 35 1 4 5 Power supply entry Fig 2 5 700064 ENS cos 1 SPECIFICATIONS 1 5 6 1 5 Refrigerant Flow Diagram Outdoor Unit SPW C252GH8 Indoor Unit SPW T252GH5 Compressor Accumulator 7 Accumulator service valve Gas line OD 215 88mm nipple exa 15 High i pressure switch OID Heat exchanger Check port Heat exchanger Distributor 7 Strainer Electronic x Distributor ref control POE valve 1 Liquid line service valve Liquid line op 26 35mm nipple J 1 4 E Cooling Cycle Heating Cycle Fig 3 1 6 Operating Range Temperature Indoor air intake temp Outdoor air intake temp Maximum 35 C DB 25 C WB 45 C DB Co
57. STEP 1 To start the air conditioner Press the operation button ON OFF button STEP 2 Setting the mode Press the MODE button to select the mode of your choice AUTO HEAT DRY COOL or FAN STEP 3 Setting the fan speed Press the FAN SPEED button to select the fan speed of your choice AUTO HI MED or LO AUTO is selected the fan speed switches automatically STEP 4 Setting the temperature Use the COOL or WARM button as appropriate to change the temperature setting as desired COOL reduces the temperature and WARM increases the temperature STEP 5 Setting the airflow direction To adjust the airflow direction press either the FAN AIM or SWEEP button as appropriate Using the FAN AIM button to set the airflow direction SWEEP button to circulate air STEP 6 To stop the air conditioner Press the operation button ON OFF button again SM700064 81 5 INSTRUCTION MANUAL DRY Operation How it works Heating Operation Heating performance Defrosting STANDBY on the display Special remarks Once the room temperature reaches the level that was set the unit repeats the cycle of turning on and off automatically In order to prevent the humidity in the room from rising again the indoor fan also turns off when the unit stops operating The fan speed is set to LOW automatically and cannot be adjusted DRY operation is not possible if the outdoor temperature is 15
58. SY PCB MTG BKT CASS BUTTON 6 PAUSE CASS BUTTON 5 STOP EJECT CASS BUTTON 4 FFWD CASS BUTTON 3 REW CASS BUTTON 2 PLAY CASS BUTTON 1 REC VOL PCB MTG BKT PUSH BUTTON BASS XPANDER KNOB SLIDE FUNCTION LID CD MAGNET HOLDER Z90 KNOB ROTARY VOLUME ASSY CABINET TOP CD DOOR SPRING Z120 HANDLE CD DOOR OPEN BUTTON CD OPEN BUTTON HOLDE OPEN BUTTON BKT GEAR CD DOOR ASSY CD BRACKET 9503 CD MAIN CD DECK MTG BKT CD RUBBER CUSHION SOFT CD RUBBER CUSHION HARD REF NO PART NO 38 645 041 6828 39 645 041 6644 40 645 025 2259 41 645 041 6699 42 645 038 1201 43 645 041 6675 44 645 041 6910 45 645 042 4199 47 645 041 2387 48 645 042 4311 49 645 042 4373 55 645 041 6811 56 645 036 2767 FIXING PARTS REF NO PART NO 01 645 016 5078 Y02 645 036 2590 Y03 645 018 0613 Y05 645 016 5078 Y06 645 026 6164 Y07 645 016 5078 Y08 645 025 2365 Y09 645 025 2433 Y10 645 016 5078 Y11 645 036 2644 Y12 645 025 2365 Y13 645 025 2365 Y14 645 041 6958 Y15 645 036 2606 Y16 645 036 2606 Y19 645 034 4992 Y20 645 016 5078 Y24 645 025 2365 Y25 645 016 5078 Y26 645 016 5108 Y27 645 016 5078 Y28 645 025 2433 Y29 645 041 6958 Y30 645 036 2620 Y31 645 041 6965 Y32 645 018 3690 Y33 645 036 2644 DESCRIPTION DIAL BRACKET DIAL POINTER TUNING GEAR SMALL Z100 KNOB SLIDE BAND VC GEAR Z110 KNOB ROTARY TUNING ANT CONTACT SPRING ASSY CABINET REAR LID BATTERY CASS DOOR LENS DISPLAY LENS BKT W REMOTE HOLE CD BUTTON SET REPEAT ME
59. Service Manual CD Portable Radio Stereo Cassette Recorder SPECIFICATIONS CASSETTE DECK SECTION Track System AC bias 4 track stereo Erasing System Magnet erase Tape speed 4 75 cm sec Fast forward and Rewind time 110sec C60 tape Frequency range 80 12 000 Hz Normal tape CD SECTION Channels ees 2 channel SIN fatio teet ets 73 dB Wow 8 Flutter Undetectable Sampling frequency 44 1 kHz Quantization 16 bits linear ch Pickup light source Semi conductor laser Pickup wave length 790 nm S O MCD Z120 MCD Z120F AU PA KR TW PRODUCT CODE No 164 049 01 MCD Z120 CA 164 049 02 MCD Z120F XE 164 049 03 MCD Z120F AU 164 049 04 MCD Z120F PA 164 049 05 MCD Z120F KR 164 049 06 MCD Z120F TW RADIO SECTION Tuning range FM 87 109 MHz CA PA 87 35 108 5 MHz Except CA PA AM 515 1 740 kHz CA PA 515 1 640 kHz Except CA PA Antenna Built in ferrite bar and Telescope rod GENERAL Output power 50W P W P O Speaker 10 cm x 2 8 ohms Terminal impedance PHONES 32 ohms Power source AC 120V 60Hz CA 230V 50Hz XE 230 240V 50Hz AU 110 120 220 240V 50 60Hz PA
60. T button NOTE When more than one indoor unit is connected this button is used to select a unit when adjusting the airflow direction This button cannot be used when there is only one indoor unit and one outdoor unit LOCATION button NOTE Although the remote control unit has LOCATION button this mode cannot be selected with this model SM700064 79 5 INSTRUCTION MANUAL Display Remote Control Unit AIR FLOW LOCATION TIMER SET Description A When the unit is in the heating standby mode the STANDBY indicator appears B The currently selected operation mode is displayed C When the unit is turned off the current time is displayed When the unit is turned on the current time and selected timer mode are displayed D The currently selected FAN SPEED FAN AIM and SWEEP are displayed E This is displayed only if an abnormality occurs within a unit F This indicates the number of indoor units connected when using group control G Displays the position of the air outlet 5 700064 80 5 INSTRUCTION MANUAL Operation LOCATION AUTO e6ouran M See C EL od a STEP 3 TIMER SET CLOCK FFON TIME SENSOR CHNG OFFON TIME Zeen tte CC PROGRAM 58 1a OMR H TEST RUN STEP 1 6 NOTE To warm up the system the power mains must be turned on at least five 5 hours before operation
61. TOR 0 022uF 10 50 1 006 IC LB1234 33Kn 1 1 8W C066 CAPACITOR 0 O1 uF 50 1C007 1C L81234 15 1 1 8W C067 CAPACITOR 0 O1uF 50 1C008 IC 2 4KQ 1 1 8W C068 CAPACITOR 0 50V JP001 SHORT BAR 1 5 1075 1 8051 RESISTOR CERMET 10KQ 1 17 8W C069 CAPACITOR 0 Oluf 50V JP002 SHORT BAR 1 5 1075 1 052 RESISTOR CERMET 100kn 1 1 8W C070 CAPACITOR 0 O1 F 50v JP003 SHORT BAR 1 5 1075 1 053 24Kn 1 1 8W 71 CAPACITOR 100uF 20 16V JP004 SHORT BAR 5 1075 1 R054 RESISTOR CERMET 5 6Kn 1 1 8 L CAPACITOR 0 JP005 SHORT BAR 1PS 1075 1 RESISTOR CERMET 2 4 1 1 8W CAPACITOR 0 001uF 10 50V JP006 SHORT BAR 5 1075 8056 RESISTOR CERMET 10Kn 1 1 8W CAPACITOR 0 001uF 10 50v JP008 68kn 1 1780 CAPACITOR 0 001uF 10 60 JP009 33kn 1 1 8w CAPACITOR 0 001uF 10 50v L001 AF FILTER RO59 RESISTOR CERMETO 16Kn 1X 178w L003 AF FILTER R061 RESISTOR CERMETO i10kn 5 178 O014F 10 50V L004 AF FILTER 8062 RESISTOR CERMET i0Kn 5X 1 8W 001 10 50v _ RESISTOR CERMET 47 5 1 8w 36 SM700064 3 ELECTRICAL DATA 3 4 3 4 Electric Wiring Diagram Outdoor Unit INDOOR UNIT POVER SUPPLY TO INDOOR UNIT bod i 1 i Pod CONNECTOR 0o oooo3ocmm en ll E RED 15 3 BLU 4 MN il tH H ji POW C30GH P COMPRESSOR MOTOR MAGNETIC CONTACTOR POWER TRANSFORMER BRN rova on RED RED
62. To know those values refer to the schematic diagram Regular type resistors are less than 1 4W carbon type and 0 ohm chip resistors Regular type capacitors are less than 50V and less than 1000uF of Ceramic type and Electrolytic type PACKING amp ACCESSORY REF NO PART NO 645 041 6989 645 041 6996 645 025 4314 645 042 4427 645 042 6582 645 042 6599 645 042 6575 645 042 6605 645 042 4410 645 042 6544 645 042 6551 645 042 6537 645 042 6568 645 042 4236 CABINET amp CHASSIS REF NO O O Q IN PART NO 645 041 6590 645 042 4328 645 041 6903 645 042 4182 645 042 4380 645 042 4359 645 042 4366 645 041 6354 645 041 6835 645 041 6804 645 041 6798 645 041 6781 645 041 6774 645 041 6767 645 041 6750 645 041 6880 645 041 6712 645 041 6705 645 041 6606 645 036 2798 645 041 6682 645 042 4205 645 041 7078 645 042 4335 645 041 6743 645 041 6866 645 041 6897 645 041 6347 645 025 2556 645 041 6842 645 037 3022 645 037 3039 DESCRIPTION CUSHION TOP CUSHION BOTTOM POLYBAG FOR PACKING USE CARTON CASE CA CARTON CASE XE CARTON CASE AU CARTON CASE PA CARTON CASE KR INSTRUCTION MANUAL INSTRUCTION MANUAL INSTRUCTION MANUAL INSTRUCTION MANUAL INSTRUCTION MANUAL KR REMOCON Z120 HS GY 225 CA XE AU PA DESCRIPTION LID CASS DISPLAY LENS CASS DOOR SPRING ASSY CABINET CD BUTTON HOLDER CD BUTTON SET PLAY PAUSE CD BUTTON SET STOP SKIP SEARCH GEAR CASS DOOR AS
63. and No 4 BLU lead wire terminals of 6P WHT socket connected to auxiliary relays Refer 1 3 B Other component specifications Solenoid coil of 4 way valve 20S Outdoor unit Measure the coil resistance Measure the resistance between No 1 BLK lead wire and No 2 BLK lead wire terminals of 2P YEL socket jointed to the solenoid coil Refer 1 3 B Other component specifications SM700064 67 4 SERVICE PROCEDURES 4 2 3 9 Fuse on indoor and outdoor P C B Ass y Both in indoor and outdoor unit Check the continuity Remove the P C B Ass y from the electrical component box Then pull out the fuse from the P C B Ass y Fig 46 AES Indoor P C B Ass y 467 0089 Outdoor P C B Ass y Fig 46 Then check for continuity of the fuse by using the multimeter Fig 47 Fuse 067 0059 Fig 47 SM700064 68 4 SERVICE PROCEDURES 4 2 4 4 Arrangement of Electrical Parts and Thermistor Location Indoor unit SPW T252GH5 Electrical parts Ass y Power transformer TR1 Fan motor capacitor 112 0004 Fig 48 Thermistor location SS a Z lt lt TH1 Room thermistor TH3 E2 107 0064 H3 0004 Fig 49 TH2 E1 TH3 E2 Cool Entrance Middle Heat Exit Middle SM700064 69 4 SERVICE PROCEDURES 4 2 4 Out
64. anged by just a little or changed very quickly or slowly Completely close 0 step Full open 500 20 step Min open Max open COOL WERT i25step 480 step SPW T252GH5 100step Fuzzy Control Fuzzy Control is a special kind of decision making built into the control system It regulates the functions of heating and cooling as well as some of the processes inside the unit by taking account of many different conditions of temperature fan speed etc These control circuits work automatically to send just the right amount of refrigerant through the Electronic Refrigerant Control Valve 2 14 Compressor Discharge Gas Temperature A Cooling Indoor temp 20 25 Outdoor temp C 13 or less 14 16 27 35 36 43 Compressor discharge gas temp C 40 80 40 90 60 100 70 105 Heating Except During Defrosting Indoor temp C 18 21 22 25 26 30 Outdoor temp C 0 or less 1 10 Oorless 1 10 11 21 Oorless 1 10 11 21 Compressor discharge gas temp C 40 80 50 90 40 90 50 100 60 105 50 90 60 100 70 105 0 Operate the unit at least 30 minutes to stabilize the discharge temperature Q The above discharge temperature was measured with a 15m tubing length The temperature may vary with tubing length 5 700064 20 2 PROCESSES AND FUNCTIONS 2 15 2 15 Compressor Current
65. cking the control panel for correct operation The remote control unit has a self diagnostic function to check if it works properly Use this procedure to find out if the remote control unit itself in defective Turn ON the RCU CK switch on the back of the P C B Ass y in the remote control unit See section 4 1 7 for exact location The appearance of the display will tell you whether or not the remote control unit is working correctly or not Q Normal condition All displays appear for 10 seconds then disappear Q Abnormal condition All displays flash ON and OFF for 10 seconds then disappear ANE After checking the panel be sure to set the RCU CK switch to this original OFF position SM700064 63 4 SERVICE PROCEDURES 4 2 1 4 2 Checking the Electrical Components 1 Measurement of Insulation Resistance The insulation is in good condition if the resistance exceeds 1 MO D Power Supply Wires Clamp the earthed wire of the Power Supply wires with a lead clip of the insulation resistance tester and measure the resistance by placing a probe on either of the power wires Fig 40 Then measure the resistance between the earthed wire and the other power wires Fig 40 Q Indoor Unit Clamp an aluminum plate fin or copper tube with the lead clip of the insulation resistance tester and measure the resistance by placing a probe on D and then 2 and then on the terminal
66. door unit SPW C252GH8 Electrical parts Outdoor P C B Ass y Auxiliary relay 1Y 2Y POW 30CH Fan motor capacitor RC2 Power transformer TR2 Compressor motor Magnetic contactor 52C 070_0059 Fig 50 TH8 Discharge gas Cooling Outdoor coil C2 TH4 Discharge gas Heating 5 Outdoor air temp TH6 Outdoor coil C1 071 0059 63PH High pressure switch Fig 51 205 Solenoid coil of 4 way valve SM700064 70 4 SERVICE PROCEDURES 4 2 5 5 Thermistor Characteristic Curve CD Room temp sensor TH1 SDT 500B Indoor heat exch coil sensor TH2 E1 TH3 E2 Outdoor air temp sensor TH Outdoor heat exch coil sensor TH6 C1 TH7 C2 PCB 41E 40 V 35 30 Resistance 25 N 20 lt N A QO N 15 Resistance 10 15 20 25 30 35 40 5 Temperature C 072 0059 20 15 10 5 0 5 10 15 20 gt Temperature C 072 Fig 52 Fig 53 Compressor discharge gas temp sensor TH8 Cooling Compressor discahrge gas temp sensor TH4 Heating PTC 51H Resistance 80 90 100 110 120 130 gt Temperature C SM700064 93 4
67. e a o IM gt pecoper ri COMP DET TRIG srsw vco istis 7 r MIN PILOT DET f MIX S METER DET y AM AM TUN ST RF REG osc Yel GNDI LED LED 0 O O 000 9597979 0 0 REF NO 01 02 TM03 TM04 TM05 TM06 TAPE MECHANISM PART NO 645 042 4229 645 016 5245 645 009 1612 645 041 7054 645 009 1766 645 033 3415 645 025 2617 DESCRIPTION ASSY CASS DECK MECHA ZY33 V 9T Only initial R P HEAD TC 951 Z120 CA STEREO PINCH ROLLER ARM ASSY MG ERASE Z120 CA RF BELT MAIN BELT ASSY MOTOR 201 TA7668BP Preamprifier Rec OUT Mute Mute ch OUT IN Pre OUT amp Rec IN Rec Pre OUT DND amp Rec IN Rec Mute Rec OUT OUT DND U0201 LA6541D 4 channel Bridge Driver Vcc Vref VINA VG4 Vo8 Vo7 21 20 BTL Driver GND Vo6 Vo5 VG3 VIN3 CD RES BTL Y Driver Sift RESET Vec BTL Driver DOO VIN Vol Vo2 8 d BTL Level Driver Regulator GND Vo3 Vo4 92 2 Reg OUT Reg IN IC BLOCK DIAGRAM amp DESCRIPTION U0101 LA9250M Analog
68. e falls below 88 C During HEATING operation when the temperature rises above 100 C the control circuit stops the outdoor fan motor until the temperature falls below 85 C Note that this control does not function during COOLING operation For both COOLING and HEATING modes if the temperature reaches 110 C the operation shuts down and alarm P3 appears on the remote control unit 2 9 Auto Mode for Automatic Heating Cooling Switching When the AUTO mode is selected the microprocessor calculates the difference between the set temperature and the room temperature and automatically switches to the COOLING or HEATING mode to maintain the desired temperature Set temp 3 COOL Set temp HEAT Room temp gt Roomtemp lt This means that if the room temperature is higher or equal to the set temperature COOLING operation begins If the room temperature is lower than the set temperature HEATING operation begins SM700064 24 2 PROCESSES AND FUNCTIONS 2 9 A Remote control sensor OPERATION COOL HEAT COOL HEAT COOL MODE B Body sensor 60 10 AREA A B 1 0 M 447 EAT C Se A TEMP SHIFT 4 C T SET TEMP COOL D E 10MIN F COMPRESSOR OPERATION HEAT COOL HEAT COOL 136 0070 Fig 15 Chart summary and explanations Th
69. e relationships when the remote control unit is set to AUTO mode A Normal Control Mode POWER SOURCE OFF ON OPERATION BUTTON ON COOL COOL BUTTON HEAT 22 HEAT ij 4 3 MINUTES TURN ON OFF OFF x TURN OFF COMPRESSOR ON ER OFF ON 1 5 SOLENOID COIL 4 WAY VALVE OFF ON _____ ON 1 More than 5 minutes 2 More than minutes 018 0059 Fig 18 Chart Summary and explanations For the first 3 minutes after power is first applied the 4 valve remains OFF and the compressor will not operate even if the ON button is pushed If the 4 valve is turned OFF with the compressor operating the air conditioner operates in COOLING mode See Table below If the 4 valve is turned ON with the compressor operating the air conditioner operates in HEATING mode See Table below 4 way valve solenoid COOLING OFF HEATING ON Compressor Operation Mode ON SM700064 27 2 PROCESSES AND FUNCTIONS 2 11 12 B AUTO Control Mode POWER SOURCE OPERATION BUTTON AUTO CONTROL HEAT COMPRESSOR SOLENOID COIL 4 WAY VALVE MORE THAN 1 HOUR O THERMO OFF THERMO OFF THERMO OFF THERMO ON 14 3 MINUTES MORE THAN 3 MINUTES OFF MORE THAN MORE THAN 50 SECONDS 30 SECONDS
70. eration button Do not stick anything into the air outlet of the air conditioner Doing so is dangerous because the fan is rotating at high speed Do not let children play with the air conditioner Do not cool or heat the room too much if babies or invalids are present SM700064 De 280 5 INSTRUCTION MANUAL Names of Parts This air conditioner consists of an indoor unit and an outdoor unit INDOOR UNIT 1 Air intake Remote control unit Drain hose m Coo Refrigerant tubes OUTDOOR UNIT NOTE This illustration is based on the external view of a standard model Consequently the appearance may differ from that of the air conditioner which you have selected Air outlet Conditioned air is blown out of the air conditioner through the air outlet The direction of airflow can be adjusted as desired using remote control unit Remote control unit The wall mountable remote control unit consists of display and various control buttons Air intake The air from the room is drawn into this section and passed through the air filters which remove dust Drain hose Moisture in the room condenses and drains off through this hose Refrigerant tubes The indoor and outdoor units are connected by copper tubes through which refrigerant gas flows Outdoor condensing unit The outdoor unit contains the compressor fan motor heat
71. ext page control unit in the indoor unit NO Is power supplied to the indoor NO YES Is 6P VCC connector Does the fuse on the P C B NO WHT connected firmly NO Connect the Ass y blow in the indoor unit Is 2P RS2 connector connector firmly YES WHT connected firmly YES Measure the voltage of indoor power transformer s secondary 6P VCC WHT connector Is the proper DC voltage applied to the connector YEL YEL 10 8V BRN BRN 13 5V RED RED 11 2V NO Replace the power transformer YES Replace the P C B Ass y in the indoor unit Is the insulation of the lead Replace the P C B wires damaged and are the Ass y in the indoor lead wires short circuited 2 unit Is the power transformer primary in the indoor unit short circuited Replace both the power trans former and the fuse in the indoor unit Replace the lead wires 138 0070 5 700064 46 4 SERVICE PROCEDURES 4 1 5 a 1 B Does DC 12V appear between No 2 and No 3 of the 3P Repair the wiring between terminal plate of the Remote Control Unit Check the Remote Control Unit by using selfdiagnostic function OUT the Remote Control Unit and indoor unit Refer to 4 1 7 E Checking the remote control unit for correct operation Has the RED lead wire between NO Replace the Remote Control Unit
72. he compressor motor magnetic contactor 043 0059 Outdoor fan is not running at all Are auxiliary relays 1Y 2Y normal Replace the relays Replace the capacitor Is fan motor capacitor normal YES Is there voltage output of P C B Ass y for fan motor YES Check resistance of fan motor winding OUT Replace the fan motor Replace P C B Ass y in the outdoor unit SM700064 57 4 SERVICE PROCEDURES 4 1 7 7 Using the Remote Control Unit From the remote control unit you can control both the operation and settings of the unit as well as perform several useful service checks This section explains how to use the re mote control unit to A B C D E Set service check switches Use the test run procedure Check the sensor temperature readings Find out about past service problems Check the remote control unit itself for correct operation For operation and temperature setting instructions see the Instruction Manual included as section 5 of this service manual A Service Check Switches The service check switches are located on the back of the remote control unit s P C B Ass y TEST Switch SERVICE Switch OFF BAT switch ON Back up battery RCU CK switch 045 0059 The following are the correct switch settings for normal use of the unit Only change the set
73. he sensors instead of its usual information Do not press CHK CHNG or HH buttons during checking For this model the unit address and multi address are fixed at 01 Q Each time you press the MM button you select a different sensor and the display shows the sensor number and temperature as shown below When group control is ON each unit s address is displayed ni ni ni ni Lt gt we ni 241 I 04 Indoor unit s address Sensor address Sensor temperature 1 second 0 5 1 second 2 second 048 0059 Fig 34 After sensor address displayed for 1 second wait for 0 5 second to display the sensor temperature reading Each time you press the MM button the display changes from one sensor to the next in numerical order from 01 to 16 and then back to 01 again 8 NU 5 049 0059 Fig 35 5 700064 60 4 SERVICE PROCEDURES 4 1 7 D Refer to the table below for the relationship between the sensor number and the location of the sensor Sensor Address Location of Sensor Thermistor 01 TH1 Room Temp Indoor Unit 02 TH2 Indoor coil Temp 1 ent 03 TH3 Indoor coil Temp E2 mid 04 05 TH8 Discharge gas Temp Cooling 06 TH5 Outdoor air Temp Outdoor Unit 07 TH6 Outdoor coil Temp C1 08 TH7 Outdoor coil Temp C2 09 TH4 Discharge gas Temp Heating 10 11 12 13 14 15 16
74. high Possible cause of trouble Shortage of refrigerant Refrigerant flow clogging Electronic refrigerant control valve fault 035 0059 5 700064 51 4 SERVICE PROCEDURES 4 1 5 CHECK and P4 are displayed on the remote control unit High pressure switch 63PH has cut out Either lead wires or connectors 12P WHT 2P WHT in the outdoor unit is loose or broken Repair either the wiring or connectors The air conditioner operates The high pressure switch has activated Replace the high pressure switch Possible cause of troble During COOLING and HEATING Electronic Refrigerant Control Valve is defective Refrigerant is over charged During COOLING Outdoor heat exchanger coil is blocked or dirty Outdoor fan motor is stopped During HEATING Air filter is blocked or dirty Indoor heat exchanger coil is blocked or dirty Indoor fan motor is stopped Wide tube service valve is closed 036 0059 SM700064 52 4 SERVICE PROCEDURES 4 1 5 9 CHECK and P5 are displayed on the remote control unit The control panel has detected negative phase reversed phase in the power supply Reverse any of 2 wires in the 3 phase power supply wirings R S T connected to either the indoor unit or outdoor unit Fig 28 Then does the air conditioner operate Normal Has the
75. ion If you have problems or questions concerning your Air Conditioner you will need the following information Model and serial numbers are on the name plate Model __________________ Serial No Date of purchase Dealer s address Phone number Alert Symbols The following symbols used in this manual alert you to potentially dangerous conditions to users service personnel or the appliance WARNING This symbol refers to a hazardous or unsafe practice which can result in severe personal injury or death unsafe practice which can result in personal injury or product or property damage 1 CAUTION This symbol refers to a hazardous or SM700064 275 5 INSTRUCTION MANUAL Installation Location e We recommend that this air conditioner be installed properly by qualified installation technicians in accordance with the Installation Instructions provided with the unit Before installation check that the voltage of the electric supply in your home or office is the same as the voltage shown on the name plate WARNING Do not install this air conditioner where there are fumes or flammable gases or in an extremely humid space such as a greenhouse Do not install the air conditioner where excessively hot heat generating objects are located Avoid To protect the air conditioner from heavy corrosion avoid installing the outdoor unit where salty sea water can sp
76. is chart shows how the Operation Mode COOLING or HEATING is determined by the microprocessor taking both the room temperature and the compressor ON time into consideration It also shows the temperature points at which the cooling and heating modes switch when the AUTO mode is selected There is no mode change of COOL or HEAT within C and D area Thus small changes from the set temperature will not cause the unit to switch back and forth erratically between heating and cooling COOL mode is selected in B area and HEAT mode is selected in E area provided that the compressor has stopped for more than 60 minutes COOL mode is selected in A area and HEAT mode is selected in F area provided that the compressor has stopped for more than 10 minutes When the outdoor ambient temperature exceeds 25 C in HEAT mode the indoor fan speed is set to L and stops the compressor SM700064 25 2 PROCESSES AND FUNCTIONS 2 10 km 2 10 Defrosting Control Outdoor Heat Exchanger Coil Heating When the outdoor temperature is low frost may gather on the outdoor heat exchanger coil When this happens the defrosting system operates The microprocessor in the outdoor unit monitors the relationship between the temperature of the outdoor heat exchanger coil and the outdoor temperature so it can defrost when necessary DEFROSTING Flow of Defrosting RANGE C 13 10 X Detecting the frost Monitoring time 15 minutes 2
77. ith refrigerant Electronic refrigerant control valve is defective Replace valve Compressor is defective Replace compressor Service valves are not fully open Open the valves fully Air filter is clogged Not enough air circulation Clean the filter Set the fan speed to either MEDIUM or HIGH Is fan speed set to LOW Refrigerant tubes between indoor and outdoor units are not insulated Insulate wide and narrow tubes separately Cold air is discharged 4 way valve is defective Replace valve Cold draft prevention STANDBY is Replace indoor is not working displayed Indoor coil sensor E2 is defective Replace sensor 026 SM700064 43 4 SERVICE PROCEDURES 4 1 3 3 Meanings of the Remote Control Unit Alarm Messages This table gives each Alarm Message its meaning and the specific cause To find the exact repair procedure go to section 6 find the page with the Alarm Message and follow the diagnosis procedure Possible cause of trouble Alarm message When there is no alarm message EO Remote Control Unit is detecting abnormal signal from indoor unit Indoor unit is detecting abnormal Serial Com signal from the remote control munication unit Errors SCR indoor unit is detecting abnormal signal from outdoor unit ou
78. lash directly onto it or in sulphurous air near a spa Electrical Requirements 1 All wiring must conform to local electrical codes Consult your dealer or a qualified electrician for details 2 Each unit must be properly grounded with a ground or earth wire or through the supply wiring 3 Wiring must be done by a qualified electrician P CAUTION To warm up the system the power ower mains mains must be turned on at least five 5 hours before operation Leave the power mains ON unless you will not be using this appliance for an extended period Safety Instructions Read this booklet carefully before using this air conditioner If you still have any difficulties or problems consult your dealer for help This air conditioner is designed to give you comfortable room conditions Use this air conditioner only for its intended purpose as described in this Instruction Manual 4 WARNING Never use or store gasoline or other flammable vapors or liquids near the air conditioner doing so is very dangerous This air conditioner has no ventilator for taking in fresh air from outdoors You must open doors or windows frequently when you use gas or oil heating appliances in the same room which consume a lot of oxygen from the air Otherwise there is a risk of suffocation in an extreme case CAUTION Do not turn the air conditioner on and off from the power mains switch Use the ON OFF op
79. ler for this service SM700064 85 5 INSTRUCTION MANUAL Troubleshooting If your air conditioner does not work properly first check the following points before requesting service f it still does not work properly contact your dealer or a service center Trouble Possible Cause Remedy Air conditioner does not 1 Power failure 1 Restore power run at all 2 Leakage breaker has tripped 2 Contact service center 3 Line voltage is too low 3 Consult your electrician or dealer 4 Operation button is OFF 4 Press the button again 5 The remote control unit or heat pump 5 Consult your dealer is malfunctioning ERROR and characters such as El Pl Fl etc appear on the display Compressor runs but soon 1 Obstruction in front of condenser coil 1 Remove obstruction stops Poor cooling or heating 1 Dirty or clogged air filter 1 Clean the air filter to improve the performance airflow 2 Heat source many people in room 2 Eliminate heat source if possible 3 Doors and or windows are open 3 Shut them to keep the heat or cold out 4 Obstacle near air intake or air 4 Remove it to ensure good airflow discharge port 5 Thermostat is set too high for cooling 5 Set the temperature lower or or too low for heating higher 6 Try to use a back up heater 6 Outdoor temperature is too low 7 Defrosting system does not work Trouble in
80. m Message appeared on the display Read this section together with either 3 2 Electric Wiring Diagram Indoor Unit or 3 4 Electric Wiring Diagram Outdoor Unit Once you know this information you go to Section 6 where flow charts take you from the problem to a specific solution For each step the flow chart gives you a specific procedure and then depending on the results of the procedure directs you to the next step until the exact problem is found and solved You will use these three sections often Section 6 Procedures for When a Specific Component Does Not Work at all gives you specific procedures to find and solve Problems when you have found a part not working either from direct observation or from the Alarm Message This section is also used often Finally Section 7 tells you how to use the control panel to find out what the past 4 problems have been with this unit and how to use the remote control unit to check the temperature of each main area where a thermistor is located 40 5 700064 4 SERVICE PROCEDURES 4 1 1 1 Check before and after Troubleshooting Many problems may happen because of wiring or power supply problems so you should check these areas first Problems here can cause false results in some of the other tests and so should be corrected first D Check power supply wiring Check that power supply wires are correctly connected to terminal No 5 through No 8 on the
81. major problem such as refrigerant not flowing in the system or reduced air circulation come to this section and find the box listing the problem Connected to the box are the main causes of the problem and their remedies To find out which malfunction is happening in your case check the remote control unit for an Alarm Message and follow the steps in section 4 A Cooling a Cooling Poor cooling Is setting temp suitable Change the setting temp Is cooling load Review cooling load too large estimate Refrigerant flow failure 4 way valve is defective Replace 4 way valve Refrigerant shortage Charge refrigerant gas Electronic refrigerant control valve is defective Replace valve Compressor is defective Replace compressor Service valves are not fully open Open valves fully Air filter is clogged Not enough air circulation Clean filter Set the fan speed to either MEDIUM or HIGH Is fan speed set to LOW Refrigerant tubes between indoor and outdoor units are not insulated Insulate wide and narrow tubes separately 025 0059 5 700064 42 4 SERVICE PROCEDURES 4 1 2 B B Heating b Heating Poor heating Is setting temp suitable Change the setting temp Is heating load too large Refrigerant flow 4 way valve is failure defective Refrigerant shortage Review heating load estimate Replace valve Charge w
82. me differ according to the capacity of the capacitor Fan motor Fig 45 Capacitor 064 0059 SM700064 66 4 SERVICE PROCEDURES 4 2 3 Solenoid coil of the electronic refrigerant Measure the coil resistance control ERCV Indoor unit Measure the resistance between No 5 GRY lead wire and other terminals another color of lead wires of 5P WHT plug jointed to the solenoid coil Refer to 1 2 A Major component specifications Compressor motor CM Outdoor unit Measure the coil resistance Measure the resistance between U RED lead wire and V WHT lead wire terminals U and W BLU lead wire terminals and V and W terminals on the compressor motor magnetic contactor Refer to 1 2 B Major component specifications Compressor motor magnetic contactor 520 Outdoor unit Measure the resistance between ORG lead wire and GRY lead wire terminals on the compressor motor magnetic contactor Refer to 1 3 B Other component specifications Check the continuity between contactors MODEL 15 Push button Pair of terminals the magnetic contactor no press press Auxiliary relay 1Y 2Y Outdoor unit Measure the coil resistance Measure the resistance between No 1 BRN lead wire and No 2 ORG lead wire terminals and No 3 RED lead wire
83. n 5 1 8W CAPACITOR C082 CAPACITOR 0 O1uF 50 PHOTOCOUPLER PC817B 065 RESISTOR CERMET 5 Gro 5 1 8 CAPACITOR CAPAC TOR 10uF 20 50 004 PHOTOCOUPLER PC817B R066 RESISTOR CERMET 3 5 1 8W CAPACITOR Goo TRANSISTOR 25C3117 T RESISTOR CERMET 3 3Kn 5 178W CAPACITOR CAPACITOR 0 47 10 50V TRANSISTOR 2541249 515 iKn 5 174W CAPACITOR 100 F 20 25 3398 R069 5 1 4w CAPACITOR 022 F CONNECTOR J5289 2A WH 25A1344 TA 2071 RESISTOR CERMET 10KN 5 1 8W CAPACITOR 1004F 20 CONNECTOR J82638 0202 B 0005 TRANSISTOR 25 1249 072 560n 5 1 8W CAPACITOR O22uF CN004 CONNECTOR J8263B 0302 Y 2SA1344 TA R073 120Kn 5 2 CAPACITOR 200uF 20 CN005 CONNECTOR J8263B 0302 8 25 3117 074 120Kn 5 24 CAPACITOR CNOO6 CONNECTOR 48263 0612 0 25 3398 RO79 RESISTOR OXIDE iKn 5 1 C013 CAPACITOR 0 014 10 50v CNOO7 CONNECTOR 25 2812 17 RESISTOR CERMET 10Kn 5 1 8W C014 CAPACITOR 0 022uF 50 RESISTOR CERMET 10 5 1 8w C015 CAPACITOR 0 O1uF 250V CN009 CONNECTOR JSB2P HV0 CA E 2001 RESISTOR CERMET 4 vo 5 1 8W R082 RESISTOR CERMET 10kn 5 1 8W C016 CAPACITOR 20 16V CNO10 CONNECTOR JSB2P HVQ CA 1Kn 5 1 8W ROB3 10 5 1 89 C017 CAPACITOR 0 022 F 50V CNO11 CONNECTOR JSB2P HVQ CA R R003 4 7Kn 5 1 8W ROB5 RESISTOR OXIDE 3 3KN 5 2w C018 CAPACITOR 0 001 F 10 50 CN012 CONNECTOR J8263 0312 2 004 4 to 5 1
84. n the above procedures 2 Press the TIMER button to set PROGRAM ON OFF combination At this point the setting ON or OFF that is closer to the current time is displayed when that time comes the next PROGRAM indicator ON or OFF is displayed Checking the timer setting Each time the CHK CHNG button is pressed the time display and the operation type change and the timer setting is displayed After a pause the display changes to the clock display SM700064 84 5 INSTRUCTION MANUAL Indoor Unit Casing and Grille Air filter How to remove the filter How to clean the filter Outdoor Unit Care After a Prolonged Idle Period Care Before a Prolonged idle Period Care and Cleaning For safety s sake be sure to turn the appliance off and also to disconnect it from the power mains before cleaning it Do not pour water on the unit to clean it This will damage the internal components and cause an electric shock hazard Clean the casing and grille of the indoor unit with a vacuum cleaner brush or wipe them with a clean soft cloth If these parts are stained use a clean cloth moistened with a mild liquid detergent When cleaning the grille be careful not to force the vanes out of place Never use solvents or harsh chemicals Do not wipe the plastic parts with very hot water The air filter collects dust and other particles from the air and should be cleaned about
85. ndication Aan 1 Press the ON OFF button to start 2 the air conditioner GES ks 2 Press the CHK CHNG button to The timer OFF and time NN select OFF TIME mode gt indications flash TIME 2eg 3d Press the HH button until 23 is The display will TIN ZI S displayed automatically change back Press the MM button until 30 is to the present time after CLOCK displayed 10 sec d um gt 4 Press the TIMER button to set the V OFF timer How to set the ON timer Example To start the air conditioner at 7 10 x 0N Operation Indication mans 1 Press the ON OFF button to start IN TUNES the air conditioner N NI ZZ 2 Press the CHK CHNG button to The timer ON and time ONTIME select ON TIME mode Sr indications flash Se L 3 ZIN N Press the HH button until 7 is The display will displayed gt automatically change back pen Press the MM button until 10 is to the present time after M iA COR displayed 10 sec Ps L4 weg 4 Press the TIMER button to set the 1 ON timer NOTE When the ON timer is set the unit enters the paused state The operation lamp stays lit indicating that the unit is waiting until the set time comes How to set the PROGRAM timer Example To start operation at 7 10 and stop at 23 30 Operation ty ir 22000 1 m the e as i iu PROGRAM shown i
86. oling Minimum 17 C DB 14 C WB Ll 5 C DB Maximum 27 C DB WB 24 C DB 18 C WB Heating emm 1 Minimum 16 C DB WB 15 C DB WB SM700064 14 2 PROCESSES AND FUNCTIONS 2 1 Room Temperature Control ENEE 16 A Cooling EE 16 B Heating ENEE 17 2 2 Cold Draft Prevention Heating Cycle r 18 2 3 Fan Speed Auto Indoor Unit ENEE 19 A Cooling 4 4 nennen nnne 19 B Heating ENEE 19 2 4 Outdoor Fan Speed Control 20 A Cooling 20 B Heating ENEE 20 2 5 Freeze Prevention Cooling 21 2 6 Condensing Temperature Control Cooling 2 22 2 7 Overload Protection Heating eee 23 2 8 Discharge Temperature Control Cooling and 24 2 9 Auto Mode for Automatic Heating Cooling Switching 25 2 10 Defrosting Control Outdoor Heat Exchanger Coil Heating 26 2 11 4 Way Valve Solenoid Control see 27 A Normal Control Mode ENEE 27 B AUTO Control Mode ENNEN 28 2 12 Automatic Restart after Power Interruption 28 2 13 Electronic Refrigerant Control Valve 2 22 e 29 2 14 Compressor Discharge Gas Temperature eee 29 A Cooling EE 29 B Heating Except
87. oltage applied to the connector BRN BRN 10V RED RED 10V Replace the power transformer Replace the P C B Ass y in the outdoor unit Replace the P C B Ass y in the outdoor unit 031 0059 4 CHECK and ES are displayed on the remote control unit Powerful electric noise biased in the inter unit control wiring or there is a possibility of signal interruption or loose or corroded connections in the inter unit control wiring To fix this problem try to remove the source of electrical noise and or clean the connections Make sure the terminal connections are securely tightened Q Broken and nearly broken control wires can also cause this Alarm Message so carefully check the wires for physical damage and replace as necessary SM700064 48 4 SERVICE PROCEDURES 4 1 5 ng CHECK and are displayed on the remote control unit Are the inter unit control wiring between indoor and outdoor unit wired properly Reter to Fig 28 Are the wires loose or broken at each 2P terminal plates Rewire the wiring properly Be sure the terminal plates are clean and tight YES Measure the voltage of indoor power transformer s secondary 6P VCC connector Is the proper DC voltage applied to the connector YEL YEL 10 8V BRN BRN 13 5V RED RED 11 2V Measure the voltage between No 1 and No 2 of 2P terminal plate in the indoor uni
88. ontrol Heating Until either the coil temperature E2 reaches 27 C or when a maximum of 6 minutes has past Q The indoor fan motor operates in L instead of LL for 3 seconds as it starts to give the fan an initial boost 33 lt MAX 6 MINUTES INDOOR UNIT COIL TEMP E2 C 27 25 10 2 ser AUTO OR H LL L M H FAN SC M LL LLOFF L M L LL LLOFF LL L L L STANDBY INDICATOR LL Very low speed M Medium speed L Low speed H High speed 006 0059 Fig 6 Chart Summary and Explanations The main idea of this chart is to show that the indoor fan speed increases and gets closer to the set fan speed as the coil temperature E2 rises The indoor unit s coil temperature is taken from sensor E2 located in the middle of the indoor heat exchange coil The dotted line shows that the indoor fan motor is OFF When the temperature at sensor E2 falls below 10 C the indoor fan motor stops running 5 700064 2 PROCESSES AND FUNCTIONS 2 3 2 3 Fan Speed Auto Indoor Unit Using the FAN SPEED button on the remote control unit the fan speed can be set one of four values AUTO HI MED or LO When set to AUTO the indoor unit fan speed will automatically adjust to the room temperature as the two charts below show A Cooling When set on body sensor When set on remote control sensor 4 2 RO
89. ose of this section is to help you when the unit is not working properly Sometimes your experience will tell you right away where to look for a problem and when you find it you will know how to fix it at once Often however all you have is a symptom like poor cooling or outside fan doesn t come on Now you must find out the cause of the problem and then how to fix it This section provides several ways to help you go from the symptom to the cause and then the solution The first chart General Troubleshooting Flow Chart is divided into two sections Poor heating and Poor Cooling Under each heading you will find the main things that can go wrong and cause either of these problems Sometimes you can start with this chart and find the problem right away but often you will come here for more suggestions after you have looked at the error code on the remote control unit display This chart gives you the big picture of problems and solutions The other main tool we explain here is the use of the Alarm Messages When a certain part fails or a safety device has shut the unit down any alpha numeric codes appears on the display to guide you to the problem By understanding the code you can often go right to the problem area and then with this manual and your knowledge of air conditioning find the solution Sections 3 and 4 explain what each the code means Section 5 explains in detail on how to deal with the problem when the Alar
90. pear between terminal pin SO and No 5 of terminal T12 in the outdoor P C B Ass y Check continuity of outdoor NO fan motor thermal protector 49FO Is there continuity Replace the outdoor fan motor Check continuity of compressor motor thermal protector 49C in the outdoor unit Is there continuity Either lead wires or connectors 8P WHT 12P WHT is loose or broken Replace the compressor Replace the P C B Ass y in the outdoor unit Possible cause of trouble Shortage of refrigerant Overloaded for the unit Defect of 4 way valve Refrigerant flow clogging Defect of electronic refrigerant control valve Repair either the wiring or connectors 145 0070 SM700064 50 4 SERVICE PROCEDURES 4 1 5 CHECK and P3 are displayed on the remote control unit Q discharge gas temperature is too high When the high pressure in the system rises the discharge temperature will increase also Under normal conditions when the discharge temperature as measured by sensors TH8 or rises above 110 C the air conditioner shuts down and P3 appears on the display Refer to 2 8 Discharge Temperature Control The air conditioner does NO it does not Replace P C B Ass y in the not operate at all outdoor unit YES it does Does the air conditioner operate for a while Discharge gas temperature is too
91. plate Fig 41 See Fig 29 Outdoor Unit Measure the resistance on and then and then on the 8P terminal plate in the same manner as explained above 2 Fig 41 See Fig 29 Measurement of Insulation Resistance for Electrical parts e Disconnect the connector of the desired electric part from terminal plate P C B A ssy etc Fig 42 Similary disconnect the lead wires from compressor capacitor etc Fig 43 Measure the resistance in the same manner as illustrated on the right Refer to Electrical Wiring Diagram NOTE If the probe does not enter the hole because the hole is too narrow use a probe with a thinner pin 64 Metallic Earthed line Insulation tester 059 0059 Fig 40 Terminal plate Clip Copper tube or metallic part Clip Copper tube or metallic part Insulation tester 061 0059 Fig 42 From fan motor compressor and other Clip Insulation tester 062 0059 Fig 43 SM700064 4 SERVICE PROCEDURES 4 2 2 eng 2 Checking of Protective Devices Disengage the connector which consists of P plug and S socket when you want to check the protective device Then check continuity among plug s and or socket s terminal as in Fig 44 Normality of the protective device can be judged by the following table The Protective Device is proved normal if there is a continuity between terminals Fig 44
92. r 3 minute pause if the air conditioner is ready for Thermostat ON it starts again However if the function mentioned above repeats twice the remote control unit displays the alarm message H2 compressor load Failure of Compressor Current Detection Circuit When the Compressor Current Detection Circuit fails to detect the compressor current within 2 seconds of compressor start up both compressor and outdoor fan stop Thermostat OFF After 3 minute pause if the air conditioner is ready for Thermostat ON it starts again However when the circuit fails to detect the current twice in a row the remote control unit displays alarm message H3 Failure of compressor Current Detection Circuit SM700064 30 2 PROCESSES AND FUNCTIONS 2 16 2 16 Dry Operation Dehumidification DRY operation uses the ability of the cooling cycle to remove moisture from the air but by running at a low level to dehumidify without greatly reducing room temperature In this mode the microprocessor automatically controls the ON OFF operation between 2 and 2 of the set temperature A range B range C range T 2 C T 1 C ROOM TEMP A DEG e 2deg gt 5 B omen WEE 2deg 022 0059 Fig 23 When the room temperature is in this range cooling operation starts However when the temperature is below 18 C the cooling operation does not start When the room temperature is in thi
93. refrigerant control is not effective and the temperature continues to drop and stays below 0 C for 2 minutes consecutively the control circuit stops the compressor The compressor does not start again until the temperature rises above 3 C The minimum time the compressor stops for is 3 minutes The Freeze Prevention function does not become active until 8 minutes after the compressor starts SM700064 21 2 PROCESSES AND FUNCTIONS 2 6 2 6 Condensing Temperature Control Cooling Condensing temperature is controlled by the outdoor heat exchanger coil temperature as reported by sensor C2 60 OUTDOOR UNIT COIL TEMP C2 C 55r OUTDOOR FAN SPEED ELECTRONIC REF CONTROL VAVLE 012 0059 Fig 12 Chart Explanations and notes This chart shows how the outdoor fan speed and the electronic refrigerant control valve react to coil temperature to control condensing temperature Sensor C2 is located in the middle of the outdoor unit heat exchange coil When C2 rises above 60 C the electronic refrigerant control valve opens at 50 steps 30 seconds and the outdoor fan speed is forced to change to high H until C2 falls below 55 5 700064 22 2 PROCESSES AND FUNCTIONS 2 7 2 7 Overload Protection Heating This function prevents overloading of the air conditioner 65 62 60 INDOOR UNIT 59 COIL TEMP E2 C 55 FUZZY OVER
94. s range the air conditioner automatically repeats the DRY cycle of 5 minutes ON 4 minutes OFF see Fig 24 for details When the room temperature is in this range the control circuit shuts off the air conditioner entirely ROOM TEMP AREA SET TEMP T C Lee B 2 1 ___ OUTDOOR FAN INDOOR FAN 5 MINUTES 4 MINUTES 30 SECONDS 30 SECONDS Body sensor 137 0070 Fig 24 The indoor fan speed is automatically set to L and cannot be adjusted When the outdoor temperature falls below 15 C the control circuit stops the DRY operation regardless of room temperature When the set temperature is either 18 or 19 C the set temperature is considered the same as 20 C Room temperature is monitored every 9 minutes when it is in the B range to select the best operation mode 31 5 700064 2 PROCESSES AND FUNCTIONS 2 17 2 17 Air Flap Control Automatic cooling setting F1 Cooling F2 heating F4 Automatic F5 heating setti ng Automatic heating setting low fan speed 190 0065 Fig 25 Flap Position Remote Control Operation When swing is off When swinging o unit Mode Automatic Optional setting COOL FAN DRY HEAT High fan speed Low fan speed Standby F4 F5 Swing setting The position before
95. suitable Is the address switch 55 on the NO Indoor P C B Ass y is set to position 1 Refer to 4 2 6 checking the P C B Ass y Set the switch to position 1 Replace the P C B Ass y either in indoor or outdoor unit 039 0059 SM700064 54 4 SERVICE PROCEDURES 4 1 5 8 09 CHECK and either H1 H2 or is displayed on the remote control unit Q Protective device for the compressor has opened and shut off the current Refer to 2 15 Compressor Current Detection Circuit CHECK displyed Overloaded compressor motor is deteced Possible cause of trouble Low voltage power source Compressor motor magnetic contactor s 52C fault Refrigerant over charged CHECK and H2 are displayed Locked compressor motor is detected Replace the compressor CHECK and are displayed Defect of compressor current detection circuit Possible cause of trouble A lead wire BLU between the 8P terminal plate s T phase and the terminal T of compressor motor magnetic contactor 52C has come off Compressor motor magnetic contactor s 52C fault Outdoor P C B Ass y is defective 040 0059 4 CHECK and P9 are displayed on the remote control unit Is 15P connector socket RED being attached to panel connected firmly with 15P
96. swing after standby Swing from F1 to F5 F2 after the standby for heating mode is released mode is released the flap returns the the flap swings original position between F1 and F5 Remote Control Operation Flap Position Unit __ Mode Settings of COOL DRY F1 F2 F3 optional setting Airflow Direction HEAT FAN F1 F2 F3 F4 F5 optional setting Standby F2 after release of the standby mode the for heating flap returns to the original position N When the unit is stopped the Auto Flap returns to F5 position When the airflow direction is set an optional setting the auto and Swing settings will be released To return to automatic airflow direction change the operation mode SL Once Auto Flap is set it will be input in the memory When the operation mode is changed the unit begins a sensing operation if a search action for sensing point is not succeeded in one minute only the flap moves udo SM700064 3 ELECTRICAL DATA 3 1 3 2 3 3 3 4 3 5 Schematic Diagram Indoor and Outdoor Units sss 34 Electric Wiring Diagram Indoor Unit ENNEN 35 Indoor Unit P C B Ass y Component List ss 222 36 Electric Wiring Diagram Outdoor Unit 37 Outdoor Unit P C B Ass y Component 38 SM700064 33 3 ELECTRI
97. t Is the pointer of multimeter about DC 12V NO Replace the power transformer Replace the P C B Ass y in the indoor unit 032 0059 CHECK and P1 displayed on the remote control unit How long does it take for the 30 60 minutes indoor fan motor to return to its operation after it trips Thermal protector in the indoor fan motor has activated Operation does not return at all OUT Check the resistance of the indoor fan motor winding Replace the fan motor Replace the P C B Ass y in the indoor unit 033 0089 A Protective device in the indoor unit has opened the circuit Indoor fan motor thermal protector 49 FI SM700064 49 4 SERVICE PROCEDURES 4 1 5 E WXWI I IH I lt I H I I IIII qZWHWGWOI I IIIIII I II I lt II I I I IQII III IIIIs LeIIITTT Y I aaaaaaawawaawaww uw crrqarrmraan CHECK and P2 are displayed on the remote control unit Protective device s in the outdoor unit has opened the circuit The two devices are Compressor motor thermal protector 49C Outdoor fan motor thermal protector 49FO NO Check the circuit breaker Replace the fuse s on the outdoor P C B Ass y Replace the P C B Ass y in the outdoor unit 15 power supplied normally to the outdoor unit Does the fuse s on the P C B Ass y in the outdoor unit blow Does AC 220 240V ap
98. tdoor unit is abnormal Outdoor unit is detecting abnor mal signal from indoor unit indoor unit is abnormal Protective device in indoor unit is activated Activation of Error receiving of serial communications signal E1 Error transmitting serial communications signal E2 Error receiving serial communications signal Error receiving serial communications signal Error transmitting serial communications signal E4 E5 Error receiving serial communications signal Error transmitting serial communications signal Thermal protector in indoor fan motor is activated E6 E7 Thermal protector in outdoor fan motor is activated Protective Compressor thermal protector is activated device ni Protective device in outdoor unit Discharge gas temperature is abnormal P3 is activated High pressure switch is activated P4 Negative phase protector is activated P5 Wrong model combination between indoor and P6 outdoor unit Indoor thermistor is either open Indoor coil temp E1 TH1 cannot be detected F1 circuited or damaged Indoor coil temp E1 TH2 cannot be detected F2 Discharge gas temp TH8 cannot be detected F4 during COOLING operation Discharge gas temp TH4 cannot be detected F5 Thermistor Outdoor thermistor is either during HEATING operation failure open circuited or damaged Outdoor
99. tings temporarily for making service checks When you have changed the settings be sure to return them to the standard settings shown here Q SERVICE switch Refer to section 4 1 7 Past service history display RCU CK switch Refer to section 4 1 7 Checking the remote con trol unit for correct operation TEST switch Keep the switch OFF all the time RCU ADR switch Keep the switch OFF all the time BAT BKUP switch Keep the switch ON all the time 58 5 700064 4 SERVICE PROCEDURES 4 1 7 B B Test Run Procedure Q The purpose of the test run function is to let you control the operation of the unit directly without the thermostat turning the unit on or off As indicated in the following procedure be sure to switch out of TEST RUN when you are finished or the air conditioner can be damaged because it won t cycle on and off normally To protect the air conditioner from overloading the outdoor unit will not start running for 3 minutes after power is applied or the unit is turned OFF Remote Control Unit Press the TEST RUN button at the oo MODE button bottom right on the remote control unit D Press the ON OFF operation button to start the test run HEAT DRY COOL FAN Press the MODE button to select SIDEN either COOL or HEAT mode When the test run has started TEST RUN shows on the remote FAN SPEED AUTO HIMED LO control unit s displa
100. ween No 5 and No 6 RED lead wires Refer to 1 3 Other component specifications Power transformer TR2 Outdoor unit Measure the coil resistance Primary Measure the resistance between No 1 and No 2 WHT lead wires terminals of 2P WHT socket jointed to power transformer e Secondary 10V A Measure the resistance between No 1 and No 2 BRN lead wires 10V B Measure the resistance between No 3 and No 4 RED lead wires Refer to 1 3 Other component specifications 3 Indoor fan motor Indoor unit Measure the coil resistance Measure the resistance between each terminal of 9P WHT socket jointed to the indoor fan motor Refer to 1 2 Major component specifications 4 Outdoor fan motor FMO Outdoor unit Measure the coil resistance Multimeter Measure the resistance in the same manner as explained above 3 Refer to 1 2 Major component specifications Fan motor capacitor Both in indoor and outdoor unit Remove the lead wires from the capacitor terminals and then place a probe on the capacitor terminals as shown in Fig 45 Observe the deflection of the pointer setting the resistance measuring range of the multimeter to the maximum value The capacitor is good if the pointer bounces to a great extent and then gradually returns to its original position The range of deflection and the deflection ti
101. will turn off automatically as the heating operation resumes Should the power fail while the unit is running If the power supply for this unit is temporarily interrupted the unit will automatically resume operation once the power is restored with the same settings that were in effect before the power was interrupted SM700064 82 5 INSTRUCTION MANUAL Setting the Timer TIMER OFF Use this mode to turn off the appliance automatically OFF at the desired time ON Shut off time TIMER ON Use this mode to start the appliance automatically at the desired time OFF ON a Start up time PROGRAM Use this mode to turn the appliance on and off TIMER OFF automatically at the same set times every day ON ON Shut off time Start up time NOTE Because this timer uses the actual time of day be sure that the clock is set to the correct time How to set the present time Example To set the time to 21 10 Operation Indication CLOCK 1 Press the CHK CHNG button to The time indication alone select CLOCK mode flashes LI Lu 2 z e Press the HH button until 21 is The display will Le d te M displayed ub automatically stop flashing l e Press the MM button until 10 is except for the 7 7 symbol IN ZES displayed after 10 sec SM700064 83 5 INSTRUCTION MANUAL How to set the OFF timer Example To stop the air conditioner at 23 30 M EP dn Operation I
102. wiring system 7 Consult your dealer 1 Contact service center CHECK is displayed Tips for Energy Saving Avoid Do not block the air intake and outlet of the unit If either is obstructed the unit will not work well and may be damaged e Do not let direct sunlight into the room Use sunshades blinds or curtains If the walls and ceiling of the room are warmed by the sun it wil take longer to cool the room Do e Always try to keep the air filter clean Refer to Care and Cleaning A clogged filter will impair the performance of the unit To prevent conditioned air from escaping keep windows doors and other openings closed NOTE Should the power fail while the unit is running If the power supply for this unit is temporarily interrupted the unit will automatically resume operation once the power is restored with the same settings that were in effect before the power was interrupted SM700064 86 SANYO SANYO Electric Co Ltd Osaka Japan H0512 500 Printed in Japan
103. y COOL w FAN SPEED During the test run the air condi tioner runs continuously and the thermostat does not control the system TIMER D After the test run be sure to press the TEST RUN button once again to cancel this mode and be sure Alarm message TEST RUN button TEST RUN is not shown on the display ON OFF operation button H4 0070 Fig 32 ANE The TEST RUN button is used only for servicing the air conditioner Do not press this button for normal operation or the system may be damaged SM700064 59 4 SERVICE PROCEDURES 4 1 7 C C Sensor temperature display The air conditioner has temperature sensors placed in areas where temperature levels control the heating or cooling process Each sensor has an address which is made up of the unit address the multi address and the sensor number The unit address and multi address are used only when several units are hooked up to one remote control unit If there is only one unit made up of one indoor and one outdoor component then only the sensor number must be put in as shown in the procedure below Follow this procedure to display the temperature of each sensor On the remote control unit press both HH and MM buttons at the same time for 3 seconds For group address For sensor address For indoor units address 047 00 Fig 33 Once in this mode the display will show the address and temperature of t

Service Manual MCD-Z120 (CA) MCD

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