CC335/CC355
6. Failure Diagnosis Table
As a troubleshooting aide, the table in
Fig. 8
lists possible failure symptoms, possible causes and solutions to assist in correcting
the problem.
Symptoms
Possible Cause
Solution
Compressor does not work
Fuse or relay defective
Replace fuse or relay
Magnetic clutch burned
Replace clutch
Compressor locked
Replace compressor
Low pressure switch open
Low on refrigerant or defective pressure switch
HP switch opens
Overcharge of refrigerant
Adjust refrigerant charge
Condenser coil dirty
Clean condenser coil
Condenser fan(s) not working
Replace fan(s)
Faulty HP switch
Replace HP switch
LP switch opens
Loss of refrigerant
Check for possible leak, adjust charge
Plugged or defective expansion valve
Replace the expansion valve
Dirty evaporator coil
Clean the evaporator coil
Dirty air filter
Clean or replace air filter
Evaporator blower(s) not working
Replace blower(s)
Faulty low pressure switch
Replace low pressure switch
Condenser Fan not working
Electrical wiring connection bad
Locate and repair connection
Burned fuse or defective control relay
Replace fuse and/or relay
Open winding in motor
Replace fan
Evaporator Blower not working
Electrical wiring connection bad
Locate and repair connection
Burned fuse or defective control relay
Replace fuse and/or relay
Open winding in motor
Replace blower
Fig. 8 Failure Diagnosis Table
18
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