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SPECIFICATIONS ............................................................................................................................................ 2
EXTERNAL DIMENSIONS ................................................................................................................................. 3
WIRING DIAGRAMS ......................................................................................................................................... 5
ELECTRICAL PARTS ........................................................................................................................................ 7
BLOCK DIAGRAM ............................................................................................................................................. 8
MICROCOMPUTER CONTROL SYSTEM ....................................................................................................... 10
FUNCTIONS .................................................................................................................................................... 14
FUNCTION AND OPERATION OF PROTECTIVE PROCEDURES ............................................................... 19
BREAKDOWN DIAGNOSIS PROCEDURE .................................................................................................... 21
REFRIGERATION CYCLE ............................................................................................................................. 23
PERFORMANCE CURVES ............................................................................................................................ 24
DISASSEMBLING PROCEDURE ................................................................................................................... 25
PUMP DOWN....................................................................................................................................................34
REPLACEMENT PARTS LIST ......................................................................................................................... 35
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 TYPE
INDOOR UNIT
AH-S22AW2
AH-S25AW2
OUTDOOR UNIT
AU-S22AW2
AU-S25AW2
AH-S22AW2
AH-S25AW2
SY994AHS25AW2
Page
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Related Manuals for Sharp AH-S22AW2
Summary of Contents for Sharp AH-S22AW2
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Page 1: Table Of Contents
AH-S22AW2 AH-S25AW2 SERVICE MANUAL SY994AHS25AW2 SPLIT TYPE ROOM AIR CONDITIONERS MODELS INDOOR UNIT AH-S22AW2 AH-S25AW2 OUTDOOR UNIT AU-S22AW2 AU-S25AW2 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-S22AW2 AH-S25AW2 SPECIFICATIONS ITEMS INDOOR UNIT OUTDOOR UNIT INDOOR UNIT OUTDOOR UNIT AH-S22AW2 AU-S22AW2 AH-S25AW2 AU-S25AW2 Cooling capacity kcal/h 1700(600 - 2300) 1750(600 - 2500) Moisture removal Liters/h Electrical data Phase – Single Rated frequency Rated voltage range 198 to 242... -
Page 3: External Dimensions
AH-S22AW2 AH-S25AW2 EXTERNAL DIMENSIONS AY-F22SE INVERTER AIR CONDITIONER Length unit (mm) CRMC-A442JBE0 R03(AAA) 2PCS. FULL POWER SHARP CORPORATION 19.5 Figure E-1. INDOOR UNIT AU-F22SEY 5hole 10.5 Length (mm) Figure E-2. OUTDOOR UNIT... - Page 4 AH-S22AW2 AH-S25AW2 (3) Installation dimensions Unit: mm The front position of auxiliary pipe is stamped on the installation plate. It is used as a position mark when the piping is connected. At a distance equal to the scale stamped on the installation plate...
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Page 5: Wiring Diagrams
AH-S22AW2 AH-S25AW2 WIRING DIAGRAMS... - Page 6 AH-S22AW2 AH-S25AW2...
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Page 7: Electrical Parts
AH-S22AW2 AH-S25AW2 ELECTRICAL PARTS For Model AH-S22AW2, AH-S25AW2, AU-S22AW2 and AU-S25AW2 DESCRIPTION MODEL REMARKS SITE Indoor fan motor MLA486 220 - 240V, 50Hz 220V, 60Hz Indoor fan motor capacitor – 430V, 1.5µF Transformer – Primary; AC 230V, 50Hz Secondary; AC14.6V, 50Hz Fuse –... -
Page 8: Block Diagram
AH-S22AW2 AH-S25AW2 BLOCK DIAGRAMS INDOOR UNIT for AH-S22AW2 and AH-S25AW2 DC power supply circuit AC power 2.5 A Fan motor phase control circuit Room fan motor FUSE Rotation pulse input circuit Fan motor pulse detect AC clock circuit Flow direction control... - Page 9 AH-S22AW2 AH-S25AW2 OUTDOOR UNIT for AU-S22AW2 and AU-S25AW2 13 A protection Power supply Unit-unit Smoothing Filter circuit (built wiring (AC circuit circuit into IPM) power and serial signals) CPU oscillator circuit protection Outdoor fan relay drive Outdoor fan circuit Power transistor module...
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Page 10: Microcomputer Control System
AH-S22AW2 AH-S25AW2 MICROCOMPUTER CONTROL SYSTEM... - Page 11 AH-S22AW2 AH-S25AW2...
- Page 12 AH-S22AW2 AH-S25AW2 2.5A 250V FUSE CNR1 JP10 IC80 C80 R12 JP26 JP99 OUT TH 07 / 09 HOT KEEP JP11 WIRELESS PREHEAT RATE C RATE H JP12 JP28 JP29 JP30 Figure L-3. Printed Wiring Board for AH-S22AW2 and AH-S25AW2...
- Page 13 AH-S22AW2 AH-S25AW2 Figure L-4. Printed Wiring Board for AU-S22AW2 and AU-S25AW2...
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Page 14: Functions
AH-S22AW2 AH-S25AW2 FUNCTIONS 1. INDOOR UNIT (1) Cooling If the room temperature is in the c zone when 1-1 Temperature Adjustment operation begins,proportional/integral control is a. Normal control not performed, and the machine runs at Proportional control (P control) frequency code 9 power until the h zone is When the temperature zone changes, this control reached. - Page 15 AH-S22AW2 AH-S25AW2 1-5 OFF-timer The OFF-timer is set by pressing the OFF-timer button. Operation is as follows: Set temperature Cooling By fuzzy computing Set the shift up time Final(Cooling setting + 1°C) e, f zone g zone Same as above h zone (Final setting + 1°C)
- Page 16 AH-S22AW2 AH-S25AW2 1-11 Compressor relay RY1 1-12 Auto Restart (1) It is ON during operation, and when operation is When power failure occures, after power is stopped, goes OFF after a delay of 150 seconds recovered, the unit will automatically restart in the (not immediately).
- Page 17 AH-S22AW2 AH-S25AW2 2. OUTDOOR UNIT 2-1 Frequency control (1) AC current peak control Set value (Normal) Model AU-S22AW2 6.2A AU-S25AW2 6.5A (2) Control for prevention of outdoor heat exchanger overheating If the temperature of the outdoor heat exchanger exceeds the overheating prevention lone 1 or 2 during cooling, the operating frequency is lowered by approximately 5 to 15 Hz.
- Page 18 AH-S22AW2 AH-S25AW2 2-4 Power transistor module protector If the temperature of the chips in the power transistor module exceeds 105 °C, the compressor is stopped. In this case, the outdoor fan does not stop, and when the temperature of the chips in the power transistor module decreases to 105 °C 170 seconds seconds after operation is stopped, another try will be made.
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Page 19: Function And Operation Of Protective Procedures
AH-S22AW2 AH-S25AW2 FUNCTION AND OPERATION OF PROTECTIVE PROCEDURES Operation Self diagnostic display Function Description Detection Restart Restart Indoor Outdoor time condition times Indoor fan Stops operation if no revolution pulse When indoor Operation OFF No limit lock signal is input from the indoor fan motor for fan is revolving one minute. - Page 20 AH-S22AW2 AH-S25AW2 Operation Self diagnostic display Function Description Detection Restart Restart Indoor Outdoor time condition times Outdoor Lowers the operating frequency if the During Automatically o limit heating temperature of the outdoor heat exchanger compressor restarts after safety exchanger rises above 57°C during cooling. Stops the...
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Page 21: Breakdown Diagnosis Procedure
AH-S22AW2 AH-S25AW2... - Page 22 AH-S22AW2 AH-S25AW2...
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Page 23: Refrigeration Cycle
AH-S22AW2 AH-S25AW2 REFRIGERANT CYCLE Indoor unit Evaporator Flare coupling Flare coupling valve valve Strainer Outdoor unit Capillary tube Silencer Compressor Condenser Accumulator Figure R-1. Refrigeration Cycle Standard conditions: Indoor side Outdoor side Dry-bulb Temp. (˚C) Relative Humidity (%) Dry-bulb Temp. (˚C) Relative Humidity (%) -
Page 24: Performance Curves
3) Indoor air temp. : 27˚C (Running frequency: 90HZ) (Running frequency: 94Hz) 1200 1400 1000 1200 1000 2800 2800 2600 2600 2400 2400 2200 2200 Outside air temp.(˚C) Outside air temp.(˚C) Figure P-2. At Coolin for AH-S25AW2 Figure P-1. At Coolin for AH-S22AW2... -
Page 25: Disassembling Procedure
AH-S22AW2 AH-S25AW2 DISASSEMBLING PROCEDURE FOR INDOOR UNIT MODEL AH-S22AW2 and AH-S25AW2 CAUTION: DISCONNECT THE UNIT FROM THE POWER SUPPLY BEFORE ANY SERVICING 1. Using the narrow slotted screwdriver or similar, remove 3. Open the open panel, and remove the right air filter. - Page 26 AH-S22AW2 AH-S25AW2 6. After closing the open panel, open the vertical 9. Remove the control box cover. adjustment louver and pull out the bottom of the front Holding its bottom, pull and disengage the upper hook panel toward you. toward the bottom.
- Page 27 AH-S22AW2 AH-S25AW2 12. Remove the thermostat of the evaporator. 15.Remove six fastening screws of the control box, and (Pull it out after peeling off the thermoseal.) remove the control box. 13.Cut the tie band of the lead wire. 16.Remove the fastening screws of the drain pan. (Two screws on the left side).
- Page 28 AH-S22AW2 AH-S25AW2 18.Pull down the drain pan toward you for removal. 21.Loosen the fan fastening screw, and remove the fan. 19.Remove two fastening screws of the evaporator. <Cautionary points for assembling the fan> a. When inserting the motor shaft into the metal fan 20.Move the evaporator to the right, and release it from two...
- Page 29 AH-S22AW2 AH-S25AW2 22. To remove the evaporator, remove the tube holder on Remove the thermistor holder from the control box. the rear side of the cabinet, slightly lift the left side, slide it to the right, and remove it from the cabinet, pulling it toward you.
- Page 30 AH-S22AW2 AH-S25AW2 Drain pan and related How to remove the vertical adjustment louver How to remove the gear box assembly Slightly fall down the hinge area, deflect the louver, and Remove two screws which fasten the gear box remove it at one place. Remove the shaft from each of assembly.
- Page 31 AH-S22AW2 AH-S25AW2 SERVICING PROCEDURE FOR OUTDOOR UNIT MODEL AU-S22AW2 and AU-S25AW2 CAUTION: DISCONNECT THE UNIT FROM THE POWER SUPPLY BEFORE ANY SERVICING 3. Remove the front panel assembly. 1. Remove the lid of the control box. (2 screws) Pulling the bottom toward you, disengage 2 hooks on Disconnect the unit-to-unit wiring from the terminal the rear surface.
- Page 32 AH-S22AW2 AH-S25AW2 6. Disconnect the connector. (4 places) 9. Remove 2 screws which fasten the motor angle. Disconnect the faston terminal. (11 places) Pull up the motor angle for removal. Remove the 3 screws of the control PWB, and the...
- Page 33 AH-S22AW2 AH-S25AW2 13. Remove the compressor cover. 15. Remove the front panel assembly. Orifice 2 screws 4 hooks Control cover 4 screws Wire guard 4 screws Remove these screws and disengage these hooks. 4 screws 2 screws 14. Remove the thermostat of the heat exchanger.
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Page 34: Pump Down
AH-S22AW2 AH-S25AW2 PUMP DOWN Pump down is to collect the refrigerant into the outdoor unit by control of the 2 and 3-way valve and the compressor. This method is adopted in the case of unit removal for re-installation, abandonment, repair etc. Especially, pump down must be performed when abandoning the air conditioner. -
Page 35: Replacement Parts List
AH-S22AW2 AU-S25AW2 REPLACEMENT PARTS LIST [AH-S22AW2/AH-S25AW2] REF. NO. PART NO. DESCRIPTION Q'TY CODE CABINET AND UNIT PARTS 1- 1 CMOT-A263JBK0 Fan motor sub assembly 1- 2 PGUMMA071JBE0 Motor cushion 1- 3 CHLD-A050JBK0 Bearing assembly 1- 4 DCHS-A352JBK0 Cabinet assembly 1- 5... - Page 36 PSEN-A005JBK0 Flare nut assembly (3/8") 3- 4 PVLV-0341JBE0 Flare union (1/4") 3- 5 PVLV-0342JBE0 Flare union (3/8") 3- 6 DEVA-A022JBK0 Evaporator assembly [AH-S22AW2] 3- 6 DEVA-A086JBK0 Evaporator assembly [AH-S25AW2] ACCESSORY PARTS 4- 1 CRMC-A450JBE0 Remote controller 4- 2 FCOV-A013JBFS Screw cover...
- Page 37 AH-S22AW2 AU-S25AW2 INDOOR UNIT AH-S22AW2 and AH-S25AW2 1-29 1-26 4-10 1-32 4-12 1-37 4-13 2-38 2-10 2-18 1-20 2-12 2-23 1-17 1-16 2-11 1-18 1-14 1-13 1-15 1-10 1-34 1-2 1-7 1-19 1-21 1-35 1-36 1-12 4-1-2 1-30 1-11 1-25...
- Page 38 AH-S22AW2 AU-S25AW2 REPLACEMENT PARTS LIST [AU-S22AW2/AU-S25AW2] REF. NO. PART NO. DESCRIPTION Q'TY CODE CONTROL BOX PARTS AND ELECTRIC PARTS 1- 1 CMOTLA485JBE0 Fan motor 1- 2 LBND-A042JBE0 Wire fixing band 1- 3 MSPR-A102JBE0 Spring 1- 4 DPWBFA177JBKZ Electric control board...
- Page 39 AH-S22AW2 AU-S25AW2 REF. NO. PART NO. DESCRIPTION Q'TY CODE 2-23 PSEL-B226JBE0 Orifice seal 2-24 TLABCB301JBR0 Wiring diagram 2-25 LANG-A429JBW0 Heat insulator 2-26 PSEL-A880JBE0 Insulator(Rear cabinet seal) 2-27 LHLD-A114JBE0 Thermistor holder 2-28 PSEL-B742JBE0 Insulator 2-29 PSEL-B854JBE0 Motor angle cushion CYCLE PARTS...
- Page 40 2-26 1-19 2-15 2-27 2-18 1-51 2-21 2-29 1-16 1-17 2-28 4-10 2-16 3-18 3-11 3-16 2-19 3-12 2-23 3-17 1-18 3-13 3-15 2-25 2-12 2-13 2-22 2-11 3-10 2-24 2-10 2-10 3-14 '00 SHARP CORP. (1U0.11E) Printed in Japan...