Hi, I have an A6 1998 2.5 tdi....
here is my problem. The Aircon works correctly until the pipes freeze and what happens is the air no longer blows out of vents although you can here the fan going full throttle behind the glove box. This only happens when Auto is selected.
If I select econ and the pipes defrost then the air blows correctly out of the vents.
I have had the system refilled several time but still the problem is there. My dealer ship is unsure what the problem is..
Any ideas would be appreciated