System Overview - Refrigerant Circuit With Expansion Valve And Receiver/Dryer
WARNING: This page is about a different car, the 2024 Audi SQ7, 2024 Audi Q7, 2023 Audi SQ7, and 2023 Audi Q7. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
The arrows indicate the refrigerant flow direction.
The following illustration shows a refrigerant circuit with two evaporators and an internal heat exchanger as an example.
The layout of the refrigerant circuit is vehicle-specific. Refer to Refrigerant Circuit (vehicle-specific service information).
HD = High Pressure Side
ND = Low Pressure Side
- A/C Compressor Regulator Valve -N280-
- A/C Compressor
- Belt Pulley
- Depending on the version a A/C Clutch -N25- is installed in the belt pulley. Refer to Refrigerant Circuit (vehicle-specific service information).
- Depending on the version instead of the belt pulley a drive unit can also be present. Refer to Refrigerant Circuit (vehicle-specific service information).
- Pressure Relief Valve
- Refrigerant Pressure Sensor
- Vehicle-specific version. Refer to Refrigerant Circuit .
- Condenser (with Receiver/Dryer)
- Receiver/Dryer
- Installed on a condenser or in the condenser. Refer to Refrigerant Circuit (vehicle-specific service information).
- With dryer cartridge
- Service Connection - High Pressure Side
- With closure cap
- Refrigerant line with inner heat exchanger
- Front Expansion Valve
- Front Evaporator
- Evaporator in the front heater and A/C unit (installed under the instrument panel)
- Service Connection - Low Pressure Side
- With closure cap
- Rear Expansion Valve
- Only present in vehicles with a rear A/C unit (optional equipment)
- Rear Evaporator
- Only present in vehicles with a rear A/C unit (optional equipment)