VW Polo manuals

Volkswagen Polo Service & Repair Manual: A/C Pressure Switch -F129

  Note
For switching pressures, removing and installing switches and switch arrangement and version, see vehicle-specific refrigerant circuit.
Refer to → Rep. Gr.87.
   
This pressure switch has 3 functions:
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-.
 

A/C Pressure Switch -F129

Refrigerant Circuit Connections with Valve for Switches
  Note For switching pressures, removing and installing switches and switch arrangement and version, see vehicle-specific refrigerant circuit. ...

High Pressure Sensor -G65
  Note For switching pressures, removing and installing switches and switch arrangement and version, see vehicle-specific refrigerant circuit. ...

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