A/C Pressure Sensor (PCM Input)

Air Conditioning Pressure Switch

Air Conditioning Pressure Switch:

The A/C Pressure Switch (ACPSW) is used for additional A/C system pressure control. The ACPSW is also referred to as the Refrigerant Containment Switch.

For refrigerant containment control, the normally closed high pressure contacts open at a predetermined A/C head pressure. This turns off the A/C by opening the A/C demand circuit, preventing the A/C pressure from rising to a level that would open the A/C High Pressure Relief Valve.

An Excursion may be equipped with the optional Electronic Automatic Temperature Control (EATC).