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. |
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| 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-. |
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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:
Empty Refrigerant Circuit
–
Remove malfunctioning component.
–
Remove the A/C compressor.
–
Remove oil drain plug from A/C compressor.
Note
To speed up refrigerant oil drai ...
Battery General Information
WARNING
Risk of injury. Follow all Warnings and Safety
Precautions. Refer to
→ Chapter „Warnings and Safety Precautions“.
Caution ...
Searching for Refrigerant Circuit Leaks with Compressed Air or Nitrogen
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 ...
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Refrigerant Circuit Connections with Valve for Switches
High Pressure Sensor -G65