B. Circuit breaker trips in several minutes after turning the air conditioner on.
●There is a possibility of short circuit.
•Check capacity of circuit breaker.
Capacity of circuit breaker is suitable.
NO
Replace with suitable one (larger capacity).
(Only for heat pump model)
•Measure resistance of fan motor winding.
•Measure resistance of compressor motor winding.
•Measure resistance of
7-2-2. Neither fan motor nor compressor motor runs.
A. Power is not supplied.
•Check power supply.
Power is being supplied to the unit.
NO
Circuit breaker is tripped.
Power failure
Reset breaker.
Wait for recovery or contact power company.
B. Check "MODE selector" on the control panel.
• Check that MODE selector switch is | If it is set at OFF. |
not set at "OFF". |
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(Cooling only models) and (Cooling & electric heating models)
Set to "COOL".
(Heat pump model) |
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Set to "COOL" |
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| Check PCB Ass'y. | |
or "HEAT". |
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C. Check transformer.
(Only for heat pump model)
•Check continuity of primary and secondary winding to see if the lead wires are disconnected.
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