Audi A4 Owners & Service Manuals

Audi A4: A/C Refrigerant High Pressure Switch -F23-

  Note

Switch pressures, removing and installing switches as well as switch arrangement and version. Refer to vehicle specific refrigerant circuit → Heating, Ventilation and Air Conditioning; Rep. Gr.87; System Overview - Refrigerant Circuit (vehicle-specific repair manual).

Function:

Switches the coolant fan to the next higher level when the pressure in the refrigerant circuit increases (approximately 16 bar (232 psi) ).

V87-1406

Magnetic Clutch High Pressure Switch -F118-

  Note

Switch pressures, removing and installing switches as well as switch arrangement and version. Refer to vehicle specific refrigerant circuit → Heating, Ventilation and Air Conditioning; Rep. Gr.87; System Overview - Refrigerant Circuit (vehicle-specific repair manual).

Function:

Switches off A/C compressor when there is excessive pressure in the refrigerant circuit (approximately 32 bar (464 psi) ).

V87-1406

A/C Refrigerant Low Pressure Switch -F73-

  Note

Switch pressures, removing and installing switches as well as switch arrangement and version. Refer to vehicle specific refrigerant circuit → Heating, Ventilation and Air Conditioning; Rep. Gr.87; System Overview - Refrigerant Circuit (vehicle-specific repair manual).

Function:

Switches off A/C compressor when there is excessive pressure in the refrigerant circuit (approximately 2 bar (29 psi) ).

V87-1407

Refrigerant Circuit Connections with Valve for Switches

  Note

Switch pressures, removing and installing switches as well as switch arrangement and version. Refer to vehicle specific refrigerant circuit → Heating, Ventilation and Air Conditioning; Rep. Gr.87; System Overview - Refrigerant Circuit (vehicle-specific repair manual).

  • Different threads for switch on high pressure and low pressure sides.
  • Only valves and O-ring seals that are resistant to refrigerant R134a and refrigerant oil must be installed.

V87-1408

A - Connection (soldered in)

B - O-ring seal

C - Valve (with O-ring seal)

  Note

To remove and install the valve insert -C- when the refrigerant circuit is discharged, use, for example, an adapter from the Refrigerant Sockets -T10364- (for the tightening specification. Refer to → Chapter "Connections with Schrader Valve (Needle Valve)").

    READ NEXT:

     A/C Pressure Switch -F129-

      Note Switch pressures, removing and installing switches as well as switch arrangement and version. Refer to vehicle specific refrigerant circuit → Heating, Ventilation and Air Condit

     A/C Pressure/Temperature Sensor

    There are different versions of this sensor with different functions and with different names. For exact name, allocation and notes doe the respective function, refer to → Heating, Ventilatio

     Refrigerant Circuit Pressures and Temperatures

    General Information   Caution When performing work on refrigerant circuit, observe all generally applicable safety precautions and pressure container regulations. The pressures and temperatur

    SEE MORE:

     Refrigerant Circuit, Discharging with Service Station

    Work procedure may vary depending on the type of tools selected (the tool-specific operating instructions should therefore be followed). The refrigerant circuit is to be discharged if parts of the refrigerant circuit are to be removed, if there is any doubt about the quantity of refrigerant i

     Personalization

    Users General information Applies to: vehicles with personalized user settings Depending on vehicle equipment and your country, your vehicle may be able to manage various users in the MMI. Each user will be assigned the settings that they last used. Before you begin driving, you can select a user i

    © 2019-2025 Copyright www.audia4b9.com