Operation CHARM: Car repair manuals for everyone.

Relays and Sensors

The compressor is equipped with a pressure relief valve. The valve is placed in the system as a mechanical safety device. Under certain conditions, refrigerant pressure on the compressor discharge side may exceed the designed operating level. The valve is designed to open automatically at approximately 3654 ± 483 kPa (530 ± 69 psi.). This open valve performs the following functions:
^ Prevents system damage.
^ Vents the refrigerant to the atmosphere.

Correct any condition that causes this valve to open.