F 350 2WD Super Duty V10-6.8L (2009)
High Pressure Safety Valve HVAC: Description and Operation
High-Pressure Cutoff Switch
Air Conditioning
High-Pressure Cutoff Switch - 5.4L and 6.8L
The high-pressure cutoff switch is used to interrupt A/C compressor operation in the event of excessively high discharge pressure in the high-pressure
side of the refrigerant system. The PCM monitors the contacts in the high-pressure cutoff switch. When the high-pressure cutoff switch is open, the PCM
will disengage the A/C compressor clutch.
The high-pressure cutoff switch is located on a Schrader-type valve fitting on the compressor-to-condenser discharge line. It is not necessary to recover
the refrigerant to remove the high-pressure cutoff switch.
