1
AH/AY-AP18DR
AH/AY-AP24DR
INDOOR UNIT
AH-AP18DR AY-AP18DR
AH-AP24DR AY-AP24DR
OUTDOOR UNIT
MODELS
SERVICE MANUAL
S5305AYAP24DR
SHARP CORPORATION
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.
SPLIT SYSTEM
ROOM AIR CONDITIONERS
AU-A18DR AE-A18DR
AU-A24DR AE-A24DR
TABLE OF CONTENTS
Page
SPECIFICATIONS ............................................................................................................................................. 2
EXTERNAL DIMENSIONS ............................................................................................................................... 4
WIRING DIAGRAMS ......................................................................................................................................... 5
ELECTRICAL PARTS ....................................................................................................................................... 9
MICROCOMPUTER CONTROL SYSTEM ..................................................................................................... 11
FUNCTIONS ................................................................................................................................................... 19
TROUBLESHOOTING GUIDE OF CONTROL CIRCUIT ................................................................................ 27
REFRIGERATION CYCLE .............................................................................................................................. 32
PERFORMANCE CURVES ............................................................................................................................ 34
REFRIGERANT PIPE INSTALLATION WORKS ............................................................................................. 35
DISASSEMBLING PROCEDURE ................................................................................................................... 37
REPLACEMENT PARTS LIST ........................................................................................................................ 46