Journey FWD V6-3.5L (2009)
High Pressure Safety Valve HVAC: Description and Operation
High Pressure Relief Valve - Operation
HIGH PRESSURE RELIEF VALVE
The high pressure relief valve vents refrigerant from the A/C system when a discharge pressure of 3445 to 4135 kPa (500 to 600 psi) or above is
reached. The high pressure relief valve closes with a minimum discharge pressure of 2756 kPa (400 psi) is reached.
The high pressure relief valve should not open when the A/C system is operating correctly. If the high pressure relief valve vents refrigerant, there is
most likely a problem within the A/C refrigerant system. The high pressure relief valve vents only enough refrigerant to reduce the A/C system pressure,
and then re-seats itself. If the high pressure relief valve vents refrigerant, see the A/C System Diagnosis chart See: Testing and Inspection/Component
Tests and General Diagnostics.
The high pressure relief valve is factory-calibrated and cannot be adjusted or repaired, and must not be removed or otherwise disturbed. The valve is
only serviced as a part of the A/C compressor.
