Friedrich US10B30A Air Conditioner User Manual


 
15
Fails to Start
Check circuit breaker
and fuse.
Check control board
Only fan fails to start.
Improper wiring.
Defect of fan motor
capacitor.
Irregular motor resistance
( ).
Irregular motor insulation
( ).
Replacement of fan motor
Regular but fails to start
Replacement of compressor
(locking of rotor, metal)
Improper thermostat setting
Loose terminal connection.
Improper wiring
Irregular motor resistance ( )
Irregular motor insulation ( )
Replacement of compressor
(Motor damaged)
Drop in power voltage.
Check capacitor.
Replacement.
Only compressor fails to
start.
Defective compressor
capacitor.
Check power source.
Check control switch
setting.