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AH-S22AW2
AH-S25AW2
SY994AHS25AW2
SERVICE MANUAL
SHARP CORPORATION
AU-S22AW2
AU-S25AW2
OUTDOOR UNIT
Page
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
TABLE OF CONTENTS
SPLIT TYPE
ROOM AIR CONDITIONERS
INDOOR UNIT
MODELS
AH-S22AW2
AH-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.