Fails to Start
Check power source.
Check control switch setting.
Compressor only fails to start.
Drop of power voltage.
Defect of compressor capacitor.
Capacitor check.
Replacement
Check circuit breaker and fuse.
Gas leakage of feeler bulb of thermostat
Check control switch.
Fan only fails to start.
Improper wiring.
Improper thermostat setting.
Defect of fan motor capacitor.
Loose terminal connection.
Irregular motor resistance ( 
).
Irregular motor insulation
( 
).
Improper wiring.
Replacement of fan motor.
Irregular motor resistance ( 
)
Irregular motor insulation ( 
)
Replacement of compressor (Motor damaged)
Regular but fails to start.
Replacement of compressor (locking of rotor, metal).
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