Sanyo STB1220C1 - Manual (Page 34)

B. Circuit breaker trips in several minutes after turning the air conditioner on.
● There is a possibility of short circuit.
7-2-2. Neither fan motor nor compressor motor runs.
A. Power is not supplied.
B. Check "MODE selector" on the control panel.
C. Check transformer.
(Only for heat pump model)
• Check continuity of primary and
secondary winding to see if the lead
wires are disconnected.
• Check that MODE selector switch is
not set at "OFF".
Check PCB Ass'y.
If it is set at OFF.
Set to "COOL"
or "HEAT".
Set to "COOL".
(Cooling only models) and
(Cooling & electric heating models)
(Heat pump model)
NO • Check power supply.
Power is being supplied to the unit.
Circuit breaker
is tripped.
Power failure
Reset breaker.
Wait for recovery
or contact power
company.
Replace with suitable
one (larger capacity).
•
•
•
NO
Check capacity of circuit breaker.
Capacity of circuit breaker is
suitable.
Measure resistance of fan motor
winding.
Measure resistance of compressor
motor winding.
• Measure resistance of 4-way valve's
winding.
(Only for heat pump model)
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