Audi A4: Refrigerant Circuit General Information
Audi A4 (B9) 2016-2024 Service Manual / Heating, Ventilation & Air Conditioning / Refrigerant Circuit General Information
- Vehicles with a High Voltage System (Hybrid Vehicles)
- Refrigerant Circuit Components Allocation, High and Low Pressure Sides
- Refrigerant Circuit
- Connections for Quick-Release Coupling on Refrigerant Circuit
- Switches and Sensors on Refrigerant Circuit and Connections
- Refrigerant Circuit Pressures and Temperatures
- Pressure Gauge, Tests and Measurements
- Service and Recycling Units
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Vehicles with a High Voltage System (Hybrid Vehicles)
Extremely Dangerous Due to High-Voltage
The high-voltage system is under high-voltage. Death or serious
bodily injury by electric shock.
- Individuals with electronic/medical life- and health su
General Information
High pressure side are the condenser, receiver/dryer and
restrictor or expansion valve to separate the high and low
pressure liquid ends.
High pressure results from the restrictor or expansion valve
SEE MORE:
Receiver/Dryer or Accumulator and Restrictor, Replacing after Cleaning
Refrigerant Circuit
Note
Cleaning the refrigerant circuit means flushing it with
refrigerant R134a. Refer to
→ Chapter "Refrigerant Circuit, Cleaning (Flushing), with
Refrigerant R134a" or blowing through with compressed
air and nitrogen. Refer to
→ Chapter "Refrigerant Circuit, Flushing with
Repair Information
Minimum Curing Times for Bonded Windows
For safety reasons, use only non-conductive two-part adhesive
when installing windshield and rear window with the materials
listed below.
The vehicle can only be used after the minimum curing time has
elapsed.
During the minimum curing time, the vehicle mu
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