Check Valve
WARNING: This page is about a different car, the 2018 Volkswagen Jetta, 2017 Volkswagen Jetta, 2016 Volkswagen Jetta, and 2015 Volkswagen Jetta. However, it is still accessible from the selected car via links, so may be relevant.
The check valves disconnect in different areas of the refrigerant circuit. Refer to REFRIGERANT CIRCUIT .
NOTE:
The illustrated check valve -3- is installed for example on a Audi Q7 e-tron. Refer to REFRIGERANT CIRCUIT .
The check valves in the refrigerant circuit in the flow direction have a specified residual pressure (approximately 0.1 bar (1.45 psi) or 100 mbar (1.45 psi)). So that the refrigerant circuit can be completely evacuates (residual pressure less than 5 mbar) all electrically activated valves must be opened.
Depending on the version the flow direction can be marked using a sticker.