Volkswagen Polo Service & Repair Manual: A/C Technology Basic Principles

Additional Information Sources

Technical Service Handbook outlining action to be taken to rectify current problems. For the repair manual for model-specific repair work. Refe ...

Physical Principles

The four known states of water also apply to air conditioning system refrigerants. 1 -  gaseous (invisible) 2&n ...

Other materials:

Commercially Available Tools and Materials
  Note This list outlines the testers, tools and materials required for expert refrigerant circuit repair work.   Caution Non-approved tools or materials such as leak sealing additiv ...

Evaporator Vent Temperature Sensor -G263- or Evaporator Temperature Sensor -G308
Function: The Evaporator Vent Temperature Sensor -G263- or Evaporator Temperature Sensor -G308- determines the temperature behind the evaporator. This value goes to the air conditioning control module and serves as a reference signal for ...

Refrigerant Circuit with Expansion Valve
A-Low pressure side of refrigerant circuit. B-High pressure side of refrigerant circuit.         Component Aggregate State of Refrigerant Pressure bar (psi) Positive Pressure Temperature ...