Heat Pump Valve Unit, Removing And Installing, 4-Valve Block Through 02/2021: Installing
WARNING: This page is about a different car, the 2024 Audi S6 and 2024 Audi A6 Quattro. However, it is still accessible from the selected car via links, so may be relevant.
-- Insert the heat pump valve unit -G- in the bracket and insert the bolts -A and E-.
-- Mount the refrigerant lines -B and F- on the valve unit for the heat pump operation and install the bolts -C and D-.
Install in the reverse order of removal while noting the following:
- Replace the O-rings. Refer to REFRIGERANT CIRCUIT SEALS .
- There can be refrigerant oil in the removed valve block that must be redelivered to the refrigerant circuit (with the new component). Refer to Refrigerant Circuit Components, Replacing or COMPONENTS, REPLACING .
- Check the routing after securing refrigerant lines. They must be inserted in their brackets and must not come into contact with other components.