Volkswagen Golf Mk7 Service & Repair Manual: Refrigerant circuit with expansion valve and evaporator

This diagram traces the expansion valve variant refrigerant circuit on the Volkswagen Golf Mk7: evaporator, expansion valve, extraction/charging valve, receiver with desiccant, condenser and compressor, following the arrows showing flow direction.

1 -  Evaporator 2 -  Expansion valve 3 -  Valve for extracting, charging and measuring 4 -  Receiver with dessicant bag or cartridge 5 -  Condenser 6 -  Air conditioner compressor   Note Arrows show the direction of refrigerant flow.

Questions & answers

Refrigerant circuit with expansion valve and evaporator — Volkswagen Golf Mk7

How does the expansion valve Golf Mk7 AC circuit work?

Evaporator → expansion valve → charging valve → receiver with drier → condenser → compressor, cycling the refrigerant between high and low pressure.

Design of refrigerant circuit

...

Refrigerant circuit with restrictor and reservoir

1 -  Air conditioner compressor 2 -  Condenser 3 -  Restrictor 4 ...

Other materials:

• Refrigerant circuit with restrictor and reservoir
• Assembly overview - rear window
• Balancing wheel, balancing wheel with finish balancer
• Preparing fibre optic cable
• Assembly overview - air duct and air distribution in passenger compartment