C. Check other component.
Check negative phase
relay (47C) to see if it has
operated.
•
Check compressor.
There is a possibility of
locked rotor.
•
Contact power utility company
to have power voltage
restored to normal.
Check magnetic contactor.
•
NO 90% or more of
rated voltage.
YES
YES
YES
YES
Rewire power supply wires.
(MG)
Check compressor motor
internal protector.
•
(49C)
Check thermal relay (51C) to
see if it has operated.
•
Check power supply voltage.
Voltage is abnormally low.
•
Temperature of compressor is
abnormally high.
Check relay.
•
(PR)
Refrigerant gas shortage.
Charge refrigerant gas.
NO
Compressor is defective.
9-2-4. Only indoor unit does not run.
• Indoor PCB Ass'y is defective.
66
