Insufficient or No Cooling

1. Magnetic clutch does not engage:
a. Blown fuse or circuit breaker.
b. Defective magnetic clutch.
c. Defective A/C switch.
d. Faulty thermistor.
e. Faulty control amplifier.
f. Faulty wiring connections.
g. System depleted of refrigerant.
h. Faulty relay.
i. Defective pressure switch.
j. Faulty revolution detecting sensor.
2. Compressor does not rotate properly:
a. Loose or worn drive belt.
b. Defective compressor.
3. Faulty expansion valve.
4. Leaking system.
5. Blown fusible plug or clogged screen.
6. Blower does not operate properly:
a. Blown fuse.
b. Defective blower control switch.
c. Defective circuit breaker.
d. Defective main relay.
e. Defective blower motor.
f. Defective wiring connections.