Volkswagen Golf Service & Repair Manual: High-pressure sender -G65

Volkswagen Golf Service & Repair Manual / Air conditioning system with refrigerant R134a / General information on refrigerant circuit / Switch and sender in refrigerant circuit and related connections / High-pressure sender -G65

This high-pressure sender -G65- is fitted in place of the air conditioning system pressure switch -F129-.

When voltage is applied to the high-pressure sender, it generates a square wave signal, or data telegram. This signal changes when the pressure in the system changes.

Using this signal, the control units that are connected in-line (radiator fan control unit, engine control unit, operating and display unit for Climatronic air conditioning system -E87- or Climatronic control unit -J255- etc.) calculate the pressure in the refrigerant circuit and actuate the radiator fan, the engine, the air conditioning system magnetic coupling -N25- accordingly and/or alter actuation from the air conditioning system compressor regulating valve -N280-.

High-pressure sender -G65

Air conditioning system pressure switch -F129

This pressure switch has 3 functions: 1. Switches radiator fan to next higher speed when pressure increases in refrigerant circuit (approx. 16 bar). ...

Refrigerant pressure and temperature sender -G395

WARNING Danger of freezing injuries. If refrigerant circuit has not been evacuated, refri ...

Other materials:

Air conditioner compressor regulating valve -N280
The regulating valve is fitted to the air conditioner compressor. It is activated by the operating and display unit for Climatronic air conditioning system -E87- or the Climatronic control unit -J255- The regulating valve influences the pressure in the l ...

Overview - multifunction steering wheel
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Blowing through refrigerant circuit with compressed air and nitrogen
Use compressed air to force moisture and other contaminants out of the refrigerant circuit and use nitrogen to force moisture out of the refrigerant circuit. The method of blowing through the refrigerant circuit with compressed air ...