Volkswagen Workshop Service and Repair Manuals > Polo Mk4 > Heating, ventilation, air conditioning | Air conditioning with refrigerant R134a | Technical data | General remarks on the refrigerant gas loop | Electrical components not assembled in the refrigerant gas loop

Air outlet temperature sensor for the evaporator G263 or Evaporator temperature sensor G308 > < Radiator fan control unit J293

Evaporator temperature switchE33

Evaporator temperature switch -E33-

Operation:

The Evaporator temperature switch -E33 - calculates the temperature between the evaporator's cooling fins. It avoids the formation of ice between the evaporator cooling fins by interrupting the power supply to the magnetic coupling of the air conditioning compressor, whenever the temperature of the cooling fins reaches the freezing point of air humidity.

The fitting depth for the rigid filling tube is shown or indicated in the repair manual → Heating, air conditioning; Rep. Gr.87.

Note

Component assembled in vehicles in which the air conditioning compressor is operated by a splined trapezoidal belt.

Heating, ventilation, air conditioning
Air conditioning with refrigerant R134a / Technical data
General remarks on the refrigerant gas loop / ectrical_components_not_assembled_in_the_refrigerant_gas_loop/">Electrical components not assembled in the refrigerant gas loop
Evaporator temperature switch E33

Air outlet temperature sensor for the evaporator G263 or Evaporator temperature sensor G308 > < Radiator fan control unit J293