ELECTRICAL PARTS ....................................................................................................................................... 5
MICROCOMPUTER CONTROL SYSTEM ........................................................................................................ 8
AH-A129E AU-A129E SERVICE MANUAL S2918AHA129E/ SPLIT SYSTEM ROOM AIR CONDITIONERS INDOOR UNIT AH-A129E MODELS OUTDOOR UNIT AU-A129E In the interests of user-safety (Required by safety regulations in some countries) the set should be restored to its original condition and only parts identical to those specified should be used.
AH-A129E AU-A129E SPECIFICATIONS ITEMS INDOOR UNIT OUTDOOR UNIT AH-A129E AU-A129E Cooling capacity 3.45 Moisture removal Liters/h Electrical data Phase – Single Rated frequency Rated voltage range 198 to 264 Rated voltage 220 - 240 Rated current Cool 5.3 - 5.1...
AH-A129E AU-A129E ELECTRICAL PARTS DESCRIPTION MODEL REMARKS SITE Compressor RH207VXET 220/240V, 50Hz, 1000W Indoor fan motor ML-A525 220 - 240V, 50Hz, 220V, 60Hz Outdoor fan motor ML-A593 220/240V, 50Hz, 220V, 60Hz Indoor fan motor capacitor – 430V, 2µF Outdoor fan motor capacitor –...
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AH-A129E AU-A129E JBK0(C) DPWBFA R7 C14 TIMER JP14 DE FAN B JP10 JP13 DEF FAN A DEICE B OFF WIDEH JP36 REEZE B DEICE A REEZE A D. FAN OFF POWER ON JP34 JP12 JP11 JP25 JP24 JP19 JP23 JP18...
AH-A129E AU-A129E MICROCOMPUTER CONTROL SYSTEM Microcomputer (IC1) The microcomputer is a CMOS, one chip, 8-bit microcomputer. Microcomputer port allocation is as follows. Pin Terminal Input Pin Terminal Input No. Name Output Function No. Name Output Function MODEL B 33 P27...
AH-A129E AU-A129E FUNCTIONS 2. Operation modes 1. Temperature control characteristic COOL operation COOL operation The compressor turns on or off, at the In the “COOL” mode, the thermostat circuit is controlled by four thermostat lines (C1 thru C4). thermostat lines C3 and C4. The outdoor fan motor is also controlled with the compressor.
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AH-A129E AU-A129E Table H-1 7. Timer 7-1 24-HOUR PROGRAMMABLE ON/OFF TIMER Compressor Fan speed ON-TIMER or OFF-TIMER can be independently Cooling zone "UL" programmed. When the unit operates during one Dehumidifying zone "D" hour after the OFF-time is set, thermostat setting Circulating zone "D"...
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AH-A129E AU-A129E 10.Power on start 11.Auto restart If the connecting wire "POWER ON" is cut on the Power failure occurs during operation, the unit will PWB ass’y, when the power is supplied by turning restart in the same operation mode as before after on a circuit breaker, the air conditioner automatically power recovery.
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AH-A129E AU-A129E 14.Test mode 14-1 TEST 1 (For control circuit operation checking) Make terminals 1 and 2 of connector CN4 short-circuited and supply power. The timer's periods become shorter i.e. a 3 minute cycle is carried out in 3 seconds, except for ;...
AH-A129E AU-A129E REFRIGERATION CYCLE Indoor unit Evaporator Flare coupling Flare coupling Service port Outdoor unit Flare coupling Flare coupling Compressor Capillary tube Accumulator Condenser Strainer Figure R-1. Refrigeration Cycle Figure R-2. Flow of Refrigerant...
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AH-A129E AU-A129E Cycle temperature and service port pressure (ISC Cooling) NO. Condition Cooling 81˚C 39˚C 13˚C 9˚C 0.53MPa Service port pressure Gauge pressure SO Cooling T1 condition Indoor side Outdoor side Temperature (˚C) Relative humidity (%) Temperature (˚C) Relative humidity (%)
AH-A129E AU-A129E DISASSEMBLING PROCEDURE INDOOR UNIT CAUTION: DISCONNECT THE UNIT FROM THE POWER SUPPLY BEFORE ANY SERVICING 1. Remove the 3 screw covers in the front panel. 4. Close the open panel softly, and then press B and C of it securely.
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AH-A129E AU-A129E 7. Take the thermistor holder from evaporator. 11.Loose 6 screws fixing control box and take out control ass’y. 8. Take out the thermistor from evaporator. 12.Loose 2 screws fixing drain pan ass’y. (Left side) 9. Disconnect fan motor connectors and others.
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AH-A129E AU-A129E 15.Take out the drain pan ass’y. 19.Take out the fan bearing ass’y. 16.Loose a screw fixing cross flow fan to motor. 20.Take out the cross flow fan while slightly lifting the evaporator. 17.Slide the cross fan leftward to depart from the motor shaft and take out fan motor.
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AH-A129E AU-A129E FOR OUTDOOR UNITMODEL AU-A129E CAUTION:DISCONNECT THE UNIT FROM THE POWER SUPPLY BEFORE ANY SERVICING Remove the three(3) screws holding the right Remove the another screws holding the cabinet side cover and take it out. and take it out.
AH-A129E AU-A129E TROUBLESHOOTING OF A CONTROL CIRCUIT The machine does not function at all with remote controller and switches on the indoor unit. Using a meter, measure the measure the secondary voltage voltage between anodes of D1 of transformer. and D2 on the PWB ass'y 1.
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AH-A129E AU-A129E The machine does not function at all with remote controller Push button "O/I" on the wireless remote controller. Is transmitting Are batteries of the indicator of the remote wireless remote controller controller active ? good ? Replace the batteries with new ones.
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AH-A129E AU-A129E CHARACTERISTIC OF TH1 & TH2 The room is not cooled. The compressor does not operate. Push the button "TEST" on the indoor unit, and wait 3 minutes. 10˚C Using a meter, measure voltage at the terminals on the terminal board.
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AH-A129E AU-A129E REPLACEMENT PARTS LIST [AH-A129E] REF. NO. PART NO. DESCRIPTION Q'TY CODE CABINET AND UNIT PARTS 1- 1 CMOT-A271JBK0 Fan motorr sub ass’y 1- 2 NFANCA041JBE0 Cross flow fan 1- 3 CSRA-A445JBK0 Drain pan ass’y 1- 4 MJNTPA035JBFF Louver link...
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AH-A129E AU-A129E REPLACEMENT PARTS LIST [AU-A129E] REF. NO. PART NO. DESCRIPTION Q'TY CODE CABINET AND UNIT PARTS 1- 1 CMOTLA593JBE0 Fan motor 1- 2 NFANPA020JBEA Propeller fan 1- 3 PANGKA018JBP0 Motor stay angle 1- 4 PSKR-0106JBP0 Bulkhead 1- 5 GPLTPA014JBFA...