Does outdoor fan
operate normally?
YES
Does compresser
operate normally?
Compressor
is normal
Turn OFF power
Check compressor
winding resistance
Turn ON power
Check voltage of the
compressor connector
is in rate.
(AC150V-270V)?
Replace
compressor.
A
NO
YES
NO
supply.
Replace outdoor
NO
correct?
YES
supply.
NO
YES
Replace control
NO
fan motor.
Replace
compressor.
board.
- 100 -
Turn OFF power
supply.
Remove outdoor fan
connector.
Check winding resistance by
ohmmeter are correct?
Check rotor locking by rotate
with hand. Can it rotate?
YES
Replace control
board.