Sharp AH-X108E Service Manual
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Sharp AH-X108E Service Manual

Sharp AH-X108E Service Manual

Split type room air conditioners
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SPECIFICATIONS .......................................................................................................................................... 2
EXTERNAL DIMENSIONS ............................................................................................................................... 4
WIRING DIAGRAMS ....................................................................................................................................... 5
ELECTRICAL PARTS .................................................................................................................................... 10
BLOCK DIAGRAM ......................................................................................................................................... 12
MICROCOMPUTER CONTROL SYSTEM .................................................................................................... 14
FUNCTIONS ................................................................................................................................................. 25
FUNCTION AND OPERATION OF PROTECTIVE PROCEDURES ............................................................. 30
BREAKDOWN DIAGNOSIS PROCEDURE .................................................................................................. 32
REFRIGERATION CYCLE ........................................................................................................................... 34
PERFORMANCE CURVES .......................................................................................................................... 36
DISASSEMBLING PROCEDURE .................................................................................................................. 38
OPTION ......................................................................................................................................................... 45
REPLACEMENT PARTS LIST ....................................................................................................................... 46
SERVICE MANUAL
ROOM AIR CONDITIONERS
INDOOR UNIT
AH-X108E AY-X108E
MODELS
AH-X138E AY-X138E
OUTDOOR UNIT
AU-X108E AE-X108E
AU-X138E AE-X138E
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 TYPE
AH/AU-X108E
AY/AE-X108E
AH/AU-X138E
AY/AE-X138E
S6831AYX138E/
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  • Page 1: Table Of Contents

    AH/AU-X138E AY/AE-X138E SERVICE MANUAL S6831AYX138E/ SPLIT TYPE ROOM AIR CONDITIONERS INDOOR UNIT AH-X108E AY-X108E MODELS AH-X138E AY-X138E OUTDOOR UNIT AU-X108E AE-X108E AU-X138E AE-X138E 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/AU-X108E AY/AE-X108E AH/AU-X138E AY/AE-X138E SPECIFICATIONS Models INDOOR UNIT OUTDOOR UNIT AH-X108E AH-X138E AU-X108E AU-X138E Cooling capacity 2.8 (0.9 3.2) 3.6 (0.9 3.9) 2.8 (0.9 3.2) 3.6 (0.9 3.9) Moisture removal Liters/h Electrical data Phase Single Rared frequency Rated voltage range...
  • Page 3 AH/AU-X108E AY/AE-X108E AH/AU-X138E AY/AE-X138E Models INDOOR UNIT OUTDOOR UNIT AY-X108E AY-X138E AE-X108E AE-X138E Cooling capacity 2.8 (0.9 3.2) 3.6 (0.9 3.9) 2.8 (0.9 3.2) 3.6 (0.9 3.9) Heat pump 3.7 (0.9 5.0) 4.8 (1.0 6.2) 3.7 (0.9 5.0) 4.8 (1.0 6.2) Heating capacity Moisture removal...

  • Page 4: External Dimensions

    AH/AU-X108E AY/AE-X108E AH/AU-X138E AY/AE-X138E EXTERNAL DIMENSIONS 19.5 Length unit (mm) Figure E-1. INDOOR UNIT 10.5 Length unit (mm) 59.5 69.5 Figure E-2. OUTDOOR UNIT...

  • Page 5: Wiring Diagrams

    AH/AU-X108E AY/AE-X108E AH/AU-X138E AY/AE-X138E WIRING DIAGRAMS...
  • Page 6 AH/AU-X108E AY/AE-X108E AH/AU-X138E AY/AE-X138E...
  • Page 7 AH/AU-X108E AY/AE-X108E AH/AU-X138E AY/AE-X138E...
  • Page 8 AH/AU-X108E AY/AE-X108E AH/AU-X138E AY/AE-X138E...
  • Page 9 AH/AU-X108E AY/AE-X108E AH/AU-X138E AY/AE-X138E...

  • Page 10: Electrical Parts

    AH/AU-X108E AY/AE-X108E AH/AU-X138E AY/AE-X138E ELECTRICAL PARTS For Model AH-X108E and AU-X108E DESCRIPTION MODEL REMARKS SITE Indoor fan motor ML-A486 220 - 240V, 50Hz Indoor fan motor capacitor – 430V, 1.5µF Transformer – Primary; AC 230V, 50Hz Secondary; AC14.5V, 50Hz Fuse –...
  • Page 11 AH/AU-X108E AY/AE-X108E AH/AU-X138E AY/AE-X138E For Model AH-X138Eand AU-X138E DESCRIPTION MODEL REMARKS SITE Indoor fan motor ML-A486 220 - 240V, 50Hz Indoor fan motor capacitor – 430V, 1.5µF Transformer – Primary; AC 230V, 50Hz Secondary; AC14.5V, 50Hz Fuse – 250V, 2.5A Compressor HV237A1-S15DK 3-PHASE Induction motor...

  • Page 12: Block Diagram

    AH/AU-X108E AY/AE-X108E AH/AU-X138E AY/AE-X138E BLOCK DIAGRAMS INDOOR UNIT for AH-X108E / AY-X108E / AH-X138E / AY-X138E 2.5 A DC power supply circuit AC power FUSE Fan motor phase control circuit Room fan motor Rotation pulse input circuit Fan motor pulse detect...
  • Page 13 AH/AU-X108E AY/AE-X108E AH/AU-X138E AY/AE-X138E OUTDOOR UNIT for AE-X108E / AE-X138E / AU-X108E / AU-X138E 20A : AU-X138E, AE-X138E 13A : AU-X108E, AE-X108E Power supply Unit-unit protection Smoothing Passive filter Filter circuit (built wiring (AC circuit circuit circuit into IPM) power and serial signals) CPU oscillator circuit...

  • Page 14: Microcomputer Control System

    AH/AU-X108E AY/AE-X108E AH/AU-X138E AY/AE-X138E MICROCOMPUTER CONTROL SYSTEM...
  • Page 15 AH/AU-X108E AY/AE-X108E AH/AU-X138E AY/AE-X138E M B 8 9 8 5 5...
  • Page 16 AH/AU-X108E AY/AE-X108E AH/AU-X138E AY/AE-X138E...
  • Page 17 AH/AU-X108E AY/AE-X108E AH/AU-X138E AY/AE-X138E M B 8 9 8 5 5...
  • Page 18 AH/AU-X108E AY/AE-X108E AH/AU-X138E AY/AE-X138E...
  • Page 19 AH/AU-X108E AY/AE-X108E AH/AU-X138E AY/AE-X138E M B 8 9 8 5 5...
  • Page 20 AH/AU-X108E AY/AE-X108E AH/AU-X138E AY/AE-X138E...
  • Page 21 AH/AU-X108E AY/AE-X108E AH/AU-X138E AY/AE-X138E M B 8 9 8 5 5...
  • Page 22 JP32 TERMINAL (Q2) BOARD 4P (JP11) "N" (Q3) POWER SELECT AUX. (TEST RUN) TERMINAL QPWBFB182JBE0 BOARD 4P "2" FROM FROM FROM FROM LOUVER THERMISTOR FAN MOTOR FAN MOTOR MOTOR Figure L-9. Printed Wiring Board for AH-X108E, AH-X138E, AY-X108E and AY-X138E...
  • Page 23 AH/AU-X108E AY/AE-X108E AH/AU-X138E AY/AE-X138E Figure L-10. Printed Wiring Board for AU-X138E and AE-X138E...
  • Page 24 AH/AU-X108E AY/AE-X108E AH/AU-X138E AY/AE-X138E Figure L-11. Printed Wiring Board for AU-X108E and AE-X108E...

  • Page 25: Functions

    AH/AU-X108E AY/AE-X108E AH/AU-X138E AY/AE-X138E FUNCTIONS Cooling Heating AH-X108E and AH-X138E are does not Room Frequency Room Frequency provided with the heating function. temp. Code temp. Code zone zone (Hot keep fan) 1. INDOOR UNIT 1-1 Temperature Adjustment a. Normal control...
  • Page 26 AH/AU-X108E AY/AE-X108E AH/AU-X138E AY/AE-X138E (1) Control for indoor overheating prevention HEATING If the temperature of the indoor heat exchanger Fan speed : High / Med / Low exceeds the overheating prevention line during heating due to the operating frequency or the High nature of the operation, this control lowers the D - H...
  • Page 27 AH/AU-X108E AY/AE-X108E AH/AU-X138E AY/AE-X138E 1-5 ON-timer The ON-timer is set by pressing the ON-timer button. Zone Compressor intermittent time In order to attain the set temperature at the set time, 3 min. on - 3 min. off Same as Compressor the operation starting time is corrected by neuro and After "3 min.
  • Page 28 6.7A At least 9.0A 7.1A 120 min AY-X108E 6.3A 5.5A 7.1A AH-X108E 5.5A Air conditioner OFF 1-12 Power ON start 1-15 Auto Restart If a jumper wire is inserted into the place indicated When power failure occures, after power is...
  • Page 29 AH/AU-X108E AY/AE-X108E AH/AU-X138E AY/AE-X138E (2) Defrosting conditions Overheating prevention line The temperature of the outdoor heat exchanger and Operating frequency Above 50 to 43 to Below the temperature of the outdoor are detected by 2 50 Hz 43 Hz 37 Hz 37 Hz sensors, and if it stays in the preset defrost zone for During normal operation...

  • Page 30: Function And Operation Of Protective Procedures

    AH/AU-X108E AY/AE-X108E AH/AU-X138E AY/AE-X138E (2) DC overcurrent detection, AC overcurrent detection remain stopped until reset is performed. At this time, To protect against overcurrent due to sudden the 3-minute delay for control of the outdoor unit will not function; therefore, do not cancel by removing the changes in load, the compressor is stopped if the set value (29 A: AE-X138E, AU-X138E / 24 A: AE- plug and cutting the power.
  • Page 31 AH/AU-X108E AY/AE-X108E AH/AU-X138E AY/AE-X138E Operation Self diagnostic display Function Detection Restart Restart Indoor Outdoor Description time condition times Lowers the operating frequency if the compressor AC current exceeds Peak control level During Automatically restarts after [10.1/8.0A (heating), 7.5/6.15A (cooling)] compressor 4 times safety time (170 seconds) [AY-X138E/AY-X108E]...

  • Page 32: Breakdown Diagnosis Procedure

    AH/AU-X108E AY/AE-X108E AH/AU-X138E AY/AE-X138E...
  • Page 33 AH/AU-X108E AY/AE-X108E AH/AU-X138E AY/AE-X138E...

  • Page 34: Refrigeration Cycle

    Indoor unit Evaporator Flare coupling Flare coupling valve valve Outdoor unit Capillary tube Silencer Compressor Condensor Accumulator Figure R-1. Refrigeration Cycle for AH-X108E/AH-X138E Indoor unit Indoor unit Evaporator Evaporator Flare coupling Flare coupling Flare coupling Flare coupling Valve Valve Valve...
  • Page 35 AH/AU-X108E AY/AE-X108E AH/AU-X138E AY/AE-X138E Temperature at each part and pressure in 3-way valve AH-X108E AH-X138E Operation Cool Operation Cool Cool Cool mode (Max.) mode (Max.) 50 settle 50 settle 97˚C 72˚C 97˚C 73˚C 43˚C 43˚C 43˚C 42˚C 14˚C 15˚C 14˚C 16˚C...

  • Page 36: Performance Curves

    1) Indoor fan speed: Hi 2) Vertical adjustment louver "45˚", Horizontal adjustment louver "front" 3) Indoor air temp. : Cooling 27˚C (Running frequency: 61Hz) 1000 Outside air temp.(˚C) Figure P-1. At Cooling for AH-X108E (Running frequency: 76Hz) (Running frequency: 61Hz) 1100 1000 1000 Outside air temp.(˚C)
  • Page 37 AH/AU-X108E AY/AE-X108E AH/AU-X138E AY/AE-X138E NOTE: 1) Indoor fan speed: Hi 2) Vertical adjustment louver "45˚", Horizontal adjustment louver "front" 3) Indoor air temp. : Cooling 27˚C (Running frequency: 77Hz) 1300 1200 1100 1000 Outside air temp.(˚C) Figure P-4. At Cooling for AH-X138E (Running frequency: 100Hz) (Running frequency:79Hz) 1600...

  • Page 38: Disassembling Procedure

    AH/AU-X138E AY/AE-X138E DISASSEMBLING PROCEDURE FOR INDOOR UNIT MODEL AH-X108E, AY-X108E, AH-X138E AND AY-X138E CAUTION: DISCONNECT THE UNIT FROM THE POWER SUPPLY BEFORE ANY SERVICING 1. Using the narrow slotted screwdriver or similar, remove 5. Remove the fastening screw which retains the cable, the screw cover from the front panel.
  • Page 39 AH/AU-X108E AY/AE-X108E AH/AU-X138E AY/AE-X138E 9. Remove the control box cover. 14. Remove two connectors of the fan motor and one of Holding its bottom, pull and disengage the upper hook louver motor. toward the bottom. 15. Remove the indicator assembly. (Push the upper two hook of the LED holder , and the indicator will be ready for removal.) 10.
  • Page 40 AH/AU-X108E AY/AE-X108E AH/AU-X138E AY/AE-X138E b. Before fastening the motor shaft and fan, insert the 19. Pull down the drain pan toward you for removal. shaft into contact with the fan boss. Fan boss Motor shaft 20. Remove two fastening screws of the side cover L. 23.
  • Page 41 AH/AU-X108E AY/AE-X108E AH/AU-X138E AY/AE-X138E 3. Remove the receiver unit.(Press and spread the upper Drain pan and related hook, and the receiver unit will be ready for removal.) How to remove the louver motor. Remove two screws which fasten the louver motor. How to remove the horizontal adjustment louver Slightly fall down the hinge area, deflect the louver, and remove it at one place.
  • Page 42 AH/AU-X108E AY/AE-X108E AH/AU-X138E AY/AE-X138E SERVICING PROCEDURE FOR OUTDOOR UNIT MODEL AU-X108E, AU-X138E, AE-X108E AND AE-X138E CAUTION: DISCONNECT THE UNIT FROM THE POWER SUPPLY BEFORE ANY SERVICING 1. Remove one screw which is fixing the control box 6. Take off the three hooks of back side of the front panel. cover.
  • Page 43 AH/AU-X108E AY/AE-X108E AH/AU-X138E AY/AE-X138E 11. Remove two screws which are fixing the control box. 16. Disconnect the compressor wires.(three wires) and take it the thermistor out. 12. Cut some bands. 17. Take the thermistor out from the rear plate. 13. Disconnect following connectors and earth wire. •...
  • Page 44 AH/AU-X108E AY/AE-X108E AH/AU-X138E AY/AE-X138E [Fan motor angle] 26. Remove two screws which are fixing the fan motor 21. Take the compressor cover out. angle. And take it out. [Reactor box] AU-X138E AND AE-X138E ONLY 22. Remove one screw which is fixing the reactor box. 23.
  • Page 45 AH/AU-X108E AY/AE-X108E AH/AU-X138E AY/AE-X138E OPTION HOW TO REPLACE THE AIR PURIFYING FILTER (AZ-F1207; (2-sheet package) Electrostatic Type Precautions » The filters are sealed in a plastic bag to keep thier dust collection effect. Do not open the bag until using the filters. (Otherwise the filters’ life may get shorter.) »...

  • Page 46: Replacement Parts List

    Cont. box cover ass'y 2- 7 HPNLCA728JBEA Control panel 2- 8 PCOV-A483JBFA LED holder 2- 9 DSGY-A940JBK0 Electric control board [AH-X108E] 2- 9 DSGY-A934JBK0 Electric control board [AY-X108E] 2- 9 DSGY-A933JBK0 Electric control board [AH-X138E] 2- 9 DSGY-A916JBK0 Electric control board [AY-X138E]...
  • Page 47 Pipe ass'y [AH-X108E/AY-X108E] 3- 1 CPIPCA571JBK0 Pipe ass'y [AH-X138E/AY-X138E] 3- 2 PSEN-A004JBK0 Flare nut ass'y 3- 3 PSEN-A005JBK0 Flare nut ass'y [AH-X108E/AY-X108E] 3- 3 PSEN-A020JBK0 Flare nut ass'y [AH-X138E/AY-X138E] 3- 4 PVLV-A082JBE0 Flare union 3- 5 PVLV-0406JBE0 Flare union [AH-X138E/AY-X138E]...
  • Page 48 AH/AU-X108E AY/AE-X108E AH/AU-X138E AY/AE-X138E INDOOR UNIT AH-X108E, AH-X138E, AY-X108E AND AY-X138E 3-14 4-10 3-13 3-12 1-34 3-11 1-33 3-15 1-42 2-14 3-10 1-44 1-37 2-17 3-16 2-10 2-12 1-35 1-36 1-32 2-15 2-13 2-16 1-38 1-43 1-39 2-11 1-26 1-11...
  • Page 49 1-11 PSEL-B171JBE0 Bulkhead seal 1-12 PSEL-B631JBE0 Bulkhead seal 1-13 PSEL-B632JBE0 Orifice insulator 1-14 PSEL-B633JBE0 Orifice insulator 1-15 TLABBA132JBRA Sharp badge 1-16 TLABCB083JBR0 Wiring diagram [AE-X108E] 1-16 TLABCB086JBR0 Wiring diagram [AU-X108E] 1-17 GCAB-A149JBFA Rear cabinet 1-18 LHLD-0261JBM0 Cord holder 1-19 PSEL-B608JBE0...
  • Page 50 AH/AU-X108E AY/AE-X108E AH/AU-X138E AY/AE-X138E REF. NO. PART NO. DESCRIPTION Q'TY CODE 2-27 PSPA-A012JBE0 Spacer 2-28 PSPA-A042JBE0 Spacer CYCLE PARTS 3- 1 CVLV-A473JBK0 Capillary tube ass’y [AE-X108E] 3- 1 CVLV-A464JBK0 Capillary tube ass’y [AU-X108E] 3- 2 CVLV-A472JBK0 Reverse valve ass’y [AE-X108E] 3- 3 CPIPCA573JBK0 Suction tube ass’y [AU-X108E]...
  • Page 51 AH/AU-X108E AY/AE-X108E AH/AU-X138E AY/AE-X138E OUTDOOR UNIT AU-X108E 2-25 2-22 2-28 1-17 2-23 2-28 2-28 2-24 2-27 2-19 2-26 2-27 2-13 2-28 2-15 1-29 2-18 1-18 1-30 2-17 1-19 2-14 1-20 2-13 3-13 2-16 1-31 1-28 2-10 2-12 2-11 2-20 1-38 1-37 1-35 1-39...
  • Page 52 AH/AU-X108E AY/AE-X108E AH/AU-X138E AY/AE-X138E OUTDOOR UNIT AE-X108E 2-25 2-22 2-28 1-17 2-23 2-28 2-28 2-24 2-27 2-19 2-26 2-27 2-13 2-28 2-15 1-29 2-18 1-18 1-30 2-17 1-19 2-14 1-20 2-13 3-13 2-16 1-31 1-28 2-10 2-12 2-11 2-20 1-38 1-33 1-35 1-39...
  • Page 53 1-18 PSEL-B171JBE0 Bulkhead seal 1-19 PSEL-B631JBE0 Bulkhead seal 1-20 PSEL-B632JBE0 Orifice insulator 1-21 PSEL-B633JBE0 Orifice insulator 1-22 TLABBA132JBRA Sharp badge 1-23 TLABCB081JBR0 Wiring diagram [AU-X138E] 1-23 TLABCB068JBR0 Wiring diagram [AE-X138E] 1-24 GCAB-A149JBFA Rear Cabinet 1-25 LHLD-0261JBM0 Cord holder 1-26 PSEL-B608JBE0...
  • Page 54 AH/AU-X108E AY/AE-X108E AH/AU-X138E AY/AE-X138E REF. NO. PART NO. DESCRIPTION Q'TY CODE 2-21 RC-AZA076JBE0 Electrolytic cap. 2-22 RC-AZA073JBE0 Electrolytic cap. 2-23 RC-HZA342JBE0 Running capacitor 2-24 RFIL-A060JBE0 Ferrite core 2-25 RH-DZA110JBE0 Diode bridge 2-26 RH-HZ0011JBE0 PTC thermistor 2-27 RH-TZA128JBE0 2-29 CCOV-A056JBW0 Cont.Box Cover ass’y 2-30 PSEL-B603JBE0 Cover seal...
  • Page 55 AH/AU-X108E AY/AE-X108E AH/AU-X138E AY/AE-X138E OUTDOOR UNIT AU-X138E 2-32 2-29 1-24 2-30 2-35 2-31 2-11 2-35 2-24 2-27 2-33 2-34 2-34 1-36 2-18 2-23 2-19 2-25 1-25 2-10 1-37 2-16 1-26 1-27 2-19 3-13 2-22 1-38 1-35 2-12 2-17 2-13 2-20 2-26 2-21 1-45...
  • Page 56 1-46 3-11 1-43 1-12 1-32 1-47 1-41 1-13 3-12 3-18 1-30 1-11 3-19 3-10 3-14 3-2 1-33 1-29 3-15 1-31 1-17 1-16 1-19 1-15 1-28 3-17 1-18 1-14 3-16 1-21 1-20 1-22 1-23 '98 SHARP CORP. (6U0.50E) Printed in Germany...

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