Insufficient Cooling (All Speeds)

1. Clogged condenser fins.
2. Slipping compressor drive belt.
3. Slipping magnetic clutch.
4. Defective compressor.
5. Defective expansion valve.
6. Improperly adjusted temperature control lever.
7. Defective thermistor.
8. Defective temperature control resistor (if equipped).
9. Defective idling stabilizer amplifier.
10. Insufficient or excessive refrigerant in system.
11. System air bound.
12. Excess refrigerant oil in system.
13. Clogged receiver screen.