Fails to Start

Check power source.

Check control switch setting.

Compressor fails to start.

Drop of power voltage.

Defect of compressor capacitor.

Capacitor check.

Replacement.

Check circuit breaker and fuse.

Gas leakage of capillary bulb on thermostat.

Check control switch.

 

 

Fan only fails to start.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Improper wiring.

Improper thermostat

 

 

 

 

setting

 

 

 

 

 

 

 

 

 

 

 

 

 

Defect of fan motor

 

Loose terminal

 

capacitor.

connection

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Irregular motor

 

Improper wiring

 

resistance ()

 

 

Irregular motor

 

 

 

insulation ()

 

 

 

 

 

 

 

 

 

 

 

 

 

 

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 piston, metal.)

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Friedrich ZQ05B10, ZQ07B10 manual Fails to Start