Operation CHARM: Car repair manuals for everyone.

Poor Cooling



Poor Cooling












Fault symptoms
The compressor clutch engages but the system's cooling capacity is insufficient.

Conditions
The conditions are as follows:
- Outside temperature >5 degrees C.
- Radiator fans are functioning.
- There is free air flow to the condensers.
- No difference in temperature between the drier filter inlet and outlet.
- Pressure at the low-pressure side normally 1.5-2.5 bar.
- Pressure at the high-pressure side depends on the load on the system.

Fault Diagnosis Procedure