SAAB WIS ONLINE

INSPECTION

INSPECTION

Symptom Probable cause Repair order
High-pressure side is unusually high.


• Defective condenser fan motor

• Clogged condenser fin

• Too much refrigerant

• Air inside the system

• Defective receiver dryer



• Replace the fan motor.

• Clean the condenser fin.

• Discharge refrigerant.

• Replace the receiver dryer.

• After revacuating the receiver dryer, charge appropriate amount of refrigerant.


High-pressure side is unusually low.


• Defective compressor

• Not enough refrigerant

• Clogged expansion valve

• Expansion valve frozen temporarily by moisture



• Replace the compressor.

• Check for leaks.

• Replace the expansion valve.

• Fully evacuate the expansion valve.


Low-pressure side is unusually high.


• Defective compressor

• Defective expansion valve

• Too much refrigerant



• Replace the compressor.

• Replace the expansion valve.

• Discharge refrigerant.


Low-pressure side is unusually low.


• Not enough refrigerant

• Clogged expansion valve

• Expansion valve frozen temporarily by moisture

• Saturated receiver dryer



• Check for leaks.

• Replace the expansion valve.

• Replace the receiver dryer.