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.