Pressure Relieve Valve on A/C Compressor, Checking

Pressure Relieve Valve on A/C Compressor, Checking

• Function: protects refrigerant circuit against excessive pressure.

There is a danger of ice-up.

Check valve drains coolant when engine is running and pressure in coolant circuit is too high.

Turn engine off.

Checking pressure relief valve on A/C compressor (Sanden)





• The pressure relief valve - arrow - has operated when refrigerant oil is found in the close vicinity.

• In this case, take the vehicle to Volkswagen service.

There is a danger of ice-up.

Check valve drains coolant when engine is running and pressure in coolant circuit is too high.

Turn engine off.

Checking check valve on A/C compressor (Denso)





• The pressure relief valve - arrow - has operated when refrigerant oil is found in the close vicinity.

• In this case, take the vehicle to Volkswagen service.