A/C Pressure Switch F129

A/C Pressure Switch F129






F129 has three functions:
- Switches the A/C clutch N25 off when excessive refrigerant circuit pressure is present (e.g.: insufficient air flow over condenser or when overcharged).
- Switches the A/C clutch N25 off when insufficient refrigerant circuit pressure is present (e.g.: when refrigerant has leaked out)
- Switches on the second speed coolant fan V7 when refrigerant circuit pressure increases.

Note:
- The presence of F129 is engine dependant. Where F129 is not used, high pressure sensor G65 is used instead.
- Always confirm system use of either F129 or G65 and applicable wiring circuit using applicable "Engine" and "Air conditioning" wiring diagrams.
- A/C Pressure Switch F129 replaces the A/C Refrigerant High Pressure Switch F23, A/C Refrigerant Low Pressure Switch F73 and the A/C Refrigerant High Pressure Switch F118.