Compressor
failure to start
Too low voltage at compressor terminals
Improper setting of temperature controller
Protection devices trip (Discharge temp. High-Low pressure
Switch etc.)
Internal motor protector trips
Excessive liquid in compressor
Motor burns out (windings broken or short to ground)
Compressor shut
down shortly after
starting
High pressure side blockage
Low pressure side blockage
Failure of contactor (rapid fluctuation or contacts welded)
Temperature controller trips
Motor winding overheating due to lack of phase
Motor winding overheating caused by unbalanced voltage
Motor winding overheating caused by loss of refrigerant
Too high discharge pressure
Too high suction superheating degree
Non-condensable gas mixed in system
Insufficient cooling for compressor
Inside failure of compressor
Inverter Driver
failure to start
Miss-wiring or disconnection of wiring
Insufficient cooling lead to overheating
Operation out of envelope
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