Refrigerant Circuit Components Overview

Refrigerant Circuit Components Overview

HD = High-pressure end

ND = Low-pressure end





1 A/C Compressor Regulator Valve (N280)

• Check activation and function, refer to => [ A/C Compressor Regulator Valve, Checking Switch-On Signal ] A/C Compressor Regulator Valve, Checking Switch-on Signal.

2 A/C Compressor

3 Pressure Relief Valve

4 Oil Drain Plug

5 A/C Compressor Drive Unit

6 High Pressure Side Service Connection

• For measuring, emptying and filling.

CAUTION!
Only remove service connections when the refrigerant circuit is empty. The connection does not have a valve.

• In order to make the service connections accessible, the left service flap (for the A/C system) in the Audi R8 Spyder must be removed from the engine compartment trim of the compartment cover.

7 Sealing Cap

• With seal.

• Always install.

8 Connection With Valve

9 A/C Pressure/Temperature Sensor (G395) 1)

• Housing color: gray.

• Removing and installing, refer to => [ A/C Pressure/Temperature Sensor ] Service and Repair.

• Checking the signal, refer to vehicle diagnosis, testing and information system VAS 5051/ in the "Guided Fault Finding" function.

• The A/C pressure/temperature sensor exchanges information with the Climatronic Control Module (J255) via the LIN Bus A/C databus system. A High Pressure Sensor (G65) cannot be installed on the Audi R8 (it only delivers square-wave signals).

• The temperature measured by the A/C pressure/temperature sensor differs from the actual refrigerant temperature in the refrigerant circuit because of the A/C pressure/temperature sensor design and its component location. Because of this, it is not currently evaluated and is not used to regulate the A/C system.

10 Condenser 1

• On the left side of the vehicle.

11 Condenser 2

• On the right side of the vehicle.

12 Union In Refrigerant Pipe (With Restrictor)

13 Restrictor

• Installed in the threaded connection - item 12 -.

14 Evaporator

15 Refrigerant Line Threaded Connection (On The Evaporator)

16 Sealing Cap

• With seal.

• Always install.

17 Low Pressure Side Service Connection

• For measuring and emptying.

CAUTION!
Only remove service connections when the refrigerant circuit is empty. The connection does not have a valve.

• In order to make the service connections accessible, the left service flap (for the A/C system) in the Audi R8 Spyder must be removed from the engine compartment trim of the compartment cover.

18 Reservoir