b)
Check the compressor motor thermal protector (49C)
• Check voltage between
terminals No.2 and No.4 on
terminal plate.
• Check P.C.B. Ass’y.
No voltage appears.
P.C.B. Ass’y is defective.
D.
Check the indoor unit P.C.B.
Is temperature of compressor
abnormally high ?
Insufficient refrigerant gas.
YES
NO
Compressor is defective.
Charge refrigerant gas.
• Check compressor motor
thermal protector. (49C)
• Check compressor motor
magnetic contactor.
(52C)
(Only the outdoor fan does not run.)
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