A/C Pressure Switch -F129-

WARNING: This page is about a different variant/trim than selected.

NOTE:

For switching pressures, removing and installing switches and switch arrangement and version, see vehicle-specific refrigerant circuit.

Refer to the appropriate service information. .

This pressure switch has 3 functions:

Fig 1: A/C Pressure Switch - F129

Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

1. Switches the coolant fan to the next higher level when the pressure in the refrigerant circuit increases (approximately 16 bar (232 psi)).

2. Switches off A/C system if pressure is excessive (approximately 32 bar (464 psi)), for example. because of insufficient engine cooling.

3. Switches off A/C system if pressure is insufficient (approximately 2 bar (29 psi)), for example. loss of refrigerant.

NOTE:

A/C Pressure Switch -F129- replaces the A/C Refrigerant High Pressure Switch -F23-, A/C Refrigerant Low Pressure Switch -F73- and the Magnetic Clutch High Pressure Switch -F118-.