Volkswagen Golf Quiz
Air conditioning system with refrigerant R134a

Air conditioning system pressure switch -F129

In this manual: Air conditioning system with refrigerant R134a
General body repairs, exterior — 230General body repairs, interior — 279General information, paint — 133Vechile- specific paint information — 27Heating, air conditioning — 156Auxiliary heater — 58Air conditioning system with refrigerant R134a — 1297- speed dual clutch gearbox 0CW — 544- cylinder injection engine(1.4 1 direct inction. turbocharger) — 182Fuel supply system - Petrol engines — 59Running gear, axles, steering — 221Brake system — 92Wheels and Tyres guide — 12Guide for using trailers — 11Wheels and Tyres Guide - General Information — 121Brake system (hybrid) — 73Electrical system — 326Communication — 65Electrical system, general information — 111
~1min read

This pressure switch has 3 functions:

1. Switches radiator fan to next higher speed when pressure increases in refrigerant circuit (approx. 16 bar). 2. Switches the air conditioning system off in the event of excess pressure (approx. 32 bar) (e.g. because of lack of engine cooling). 3. Switches the air conditioning system off in the event of insufficient pressure (approx. 2 bar) (e.g. because of loss of refrigerant). Note The air conditioning system pressure switch -F129- replaces the high-pressure switch for air conditioning system -F23-, the low-pressure switch for air conditioning system -F73- and the high-pressure switch for magnetic clutch -F118-.
Air conditioning system pressure switch -F129

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