High-Pressure Cutoff Switch
WARNING: This page is about a different car, the 2008 Ford RV Cutaway, 2008 Ford Econoline, 2008 Ford E450 Super Duty, and 2008 Ford Cutaway. However, it is still accessible from the selected car via links, so may be relevant.
The high-pressure cutoff switch is installed on the compressor-to-condenser discharge line to interrupt A/C compressor operation in the event of high system discharge pressures.
- The high-pressure cutoff switch is mounted on a Schrader-type valve fitting on the A/C compressor discharge line.
- A valve depressor, located inside the threaded end of the high-pressure cutoff switch, presses on the Schrader valve stem.
- This allows the high-pressure cutoff switch to monitor the compressor discharge pressure.
- When the A/C compressor discharge pressure rises, the switch contacts open, disengaging the A/C compressor. When the pressure drops, the contacts close to allow operation of the A/C compressor. Refer to CLIMATE CONTROL SYSTEM - GENERAL INFORMATION AND DIAGNOSTICS article.
- It is not necessary to recover the refrigerant to remove the high-pressure cutoff switch.