System Overview - Refrigerant Circuit With Electrically-Driven A/C Compressor (With Or Without Battery Cooling Module)

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NOTE:

The arrows indicate the refrigerant flow direction.

The following illustration shows a refrigerant circuit with an expansion valve and a second evaporator for cooling the battery and an inner heat exchanger as an example.

The layout of the refrigerant circuit is vehicle-specific. Refer to OVERVIEW - A/C SYSTEM (CABRIOLET) / OVERVIEW - REFRIGERANT CIRCUIT (CABRIOLET) / SYSTEM OVERVIEW - REFRIGERANT CIRCUIT (COUPE) (vehicle-specific repair information).

HD = High Pressure Side

ND = Low Pressure Side

Fig 1: Refrigerant Circuit With Electrically-Driven A/C Compressor (With Or Without Battery Cooling Module) Component Locations

Courtesy of AUDI OF AMERICA, LLC

Electrically-Driven A/C Compressor
- With A/C Compressor Control Module -J842- and Electrical A/C Compressor -V470-. Refer to the appropriate Service Information .
Pressure Relief Valve
Condenser
- With receiver/dryer and dryer cartridge.
Receiver/Dryer
- Is a component of the condenser
Refrigerant Pressure Sensor
- Vehicle-specific versions. Refer to A/C PRESSURE/TEMPERATURE SENSOR -G395-, REMOVING AND INSTALLING (vehicle-specific repair information).
Service Connection - High Pressure Side
- With closure cap.
Refrigerant Line with Inner Heat Exchanger
Refrigerant Shut-Off Valve
- Different names. Refer to the appropriate Service Information .
- Only on vehicles with a battery cooling module for the Hybrid Battery Unit -AX1-.
  NOTE:
  The Refrigerant Shut-Off Valve is for example activated, if the battery needs to be cooled and the vehicle interior is not already being cooled (open without activation).
Expansion Valve
- On the heater and A/C unit evaporator
Front Evaporator
- Heater and A/C unit evaporator
Expansion Valve with Shut-Off Valve
- Different names. Refer to the appropriate Service Information .
- On the evaporator in the battery cooling module
- Only on vehicles with a battery cooling module for the Hybrid Battery Unit -AX1-.
  NOTE:
  The Expansion Valve with Shut-Off Valve is activated when it is necessary to cool the battery (closed without activation).
Evaporator
- Evaporator in the battery cooling module
- Only on vehicles with a battery cooling module for the Hybrid Battery Unit -AX1-.
Service Connection - Low Pressure Side
- With closure cap