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. |
|
|
|
| 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-. |
|
|
|
Note
For switching pressures, removing and installing switches
and switch arrangement and version, see vehicle-specific
refrigerant circuit.
...
Note
For switching pressures, removing and installing switches
and switch arrangement and version, see vehicle-specific
refrigerant circuit.
...
Other materials:
Refrigerant Circuit, Tracing Leaks, with Leak Detection System -VAS6196- or
Leak Detection Kit -VAS6201A- or Succeeding Model
Note
This repair manual describes different methods for detecting
leaks in the refrigerant circuit. These methods have been tested
and result in success when used correctly.
If when searching for compressed air / Nit ...
Checklist
Never carry out any work on the engine or in the engine compartment
if you are not familiar with the requisite procedures and general safety requirements,
or if you only have access to incorrect operating equipment, service fluids,
and unsuitable tools . The work should be carried ou ...
Service and disposal of belt tensioners
First read and observe the introductory information
and safety warnings
Seat belts may become damaged during any work on the belt tensioners or while
removing or refitting any vehicle parts in conjunction with any other repair work.
This damage will not always be noticeable. The consequence m ...
© 2016-2025 Copyright www.vwpolo.net
Refrigerant Circuit Connections with Valve for Switches
High Pressure Sensor -G65