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Sharp AH-A129E Service Manual

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SPECIFICATIONS ............................................................................................................................................ 2
EXTERNAL DIMENSIONS ................................................................................................................................ 3
WIRING DIAGRAMS ......................................................................................................................................... 4
ELECTRICAL PARTS ....................................................................................................................................... 5
MICROCOMPUTER CONTROL SYSTEM ........................................................................................................ 8
FUNCTIONS ..................................................................................................................................................... 9
REFRIGERATION CYCLE .............................................................................................................................. 13
PERFORMANCE CURVE ............................................................................................................................... 15
DISASSEMBLING PROCEDURE ................................................................................................................... 16
TROUBLESHOOTING OF THE CONTROL CIRCUIT .................................................................................... 21
REPLACEMENT PARTS LIST ........................................................................................................................ 24
SERVICE MANUAL
ROOM AIR CONDITIONERS
MODELS
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.

TABLE OF CONTENTS

SHARP CORPORATION
1
SPLIT SYSTEM
INDOOR UNIT
AH-A129E
OUTDOOR UNIT
AU-A129E
AH-A129E
AU-A129E
S2918AHA129E/
Page

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  Summary of Contents for Sharp AH-A129E

  • Page 1: Table Of Contents

    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.
  • Page 2: Specifications

    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...
  • Page 3: External Dimensions

    AH-A129E AU-A129E EXTERNAL DIMENSIONS Length unit (mm) 19.5 Remote controller Figure E-1. INDOOR UNIT 20˚ Figure E-2. OUTDOOR UNIT...
  • Page 4: Wiring Diagrams

    : GRAY G(Y) : GREEN–YELLOW Figure W-1. Wiring Diagram for AH-A129E I N D O O R U N I T O U T D O O R U N I T T E R M I N A L B O A R D 2...
  • Page 5: Electrical Parts

    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 –...
  • Page 6 AH-A129E AU-A129E...
  • Page 7 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...
  • Page 8: Microcomputer Control System

    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...
  • Page 9: Functions

    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.
  • Page 10 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"...
  • Page 11 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.
  • Page 12 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 ;...
  • Page 13: Refrigeration Cycle

    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...
  • Page 14 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 (%)
  • Page 15: Performance Curve

    AH-A129E AU-A129E PERFORMANCE CURVES Indoor air temp. : 27˚C Indoor humidity : 47RH% Indoor fan speed : Hi Power source : 1ø 220V 50Hz 15300 13600 11900 10200 8500 1500 1000 3 0 3 1 3 2 3 3 3 4 3 5 3 6 3 7 3 8 3 9 4 0 Outside air temp.(˚C)
  • Page 16: Disassembling Procedure

    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.
  • Page 17 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.
  • Page 18 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.
  • Page 19 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.
  • Page 20: Troubleshooting Of The Control Circuit

    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.
  • Page 21 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.
  • Page 22 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.
  • Page 23 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...
  • Page 24: Replacement Parts List

    AH-A129E AU-A129E REF. NO. PART NO. DESCRIPTION Q'TY CODE 2-24 RH-IZA140JBE0 Integrated circuit(IC5) 2-25 RH-IZA337DRE0 Integrated circuit(IC6) 2-26 VHRS201D01/-6 Solid state relay(SSR) 2-27 RRLYJA032JBE0 Relay 2-28 RFIL-A042JBE0 Coil(L) 2-29 RH-VZA025JBE0 Varistor(NR) 2-30 RC-QZA096JBE0 Capacitor(C1) 2-31 QFS-AA050JBE0 Fuse CYCLE PARTS 3- 1...
  • Page 25 AH-A129E AU-A129E INDOOR UNIT 1-35 4-7 4-8 1-40 1-41 4-10 1-15 2-13 2-2 2-17 2-12 2-10 1-19 2-14 2-18 2-11 1-38 1-32 2-10 1-46 2-15 2-16 1-39 1-33 1-36 1-11 2-19 1-10 1-16 1-14 1-12 1-42 1-12 1-18 1-17 1-30...
  • Page 26 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...
  • Page 27 AH-A129E AU-A129E OUTDOOR UNIT 1-14 1-17 3-16 3-18 3-15 3-17 3-11 3-19 3-20 1-19 1-16 1-15 3-14 1-10 3-13 3-10 1-16 3-12 1-11 3-21 1-21 1-13 1-12...
  • Page 28 AH-A129E AU-A129E '99 SHARP CORP. (2U0.85E) Printed in Netherlands...

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Au-a129e