High Pressure Safety Valve HVAC: Testing and Inspection

A/C Compressor Pressure Relieve Valve, Checking

• Function: protects refrigerant circuit against excessive pressure.

WARNING

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.

Pressure relief valve on compressor, checking





• 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.