ssmyth182 Posted June 23, 2009 Report Share Posted June 23, 2009 Hello, I am having a problem with the heating system on my A8. Basically, the cantre vents work perfectly, however, all other vents blow nothing but hot air, no matter what I request from teh system. I believe this may be cause by the heater control valves stuck open. I have checked that the fuse is fine. Can anyone describe where these valves are and how easy they are to replace. Alternatively I am open to any suggestion of how to fix this and would like to hear from anyone who has had the same problem. Thanks for your help. Stephen Link to comment Share on other sites More sharing options...
IT_S8 Posted June 23, 2009 Report Share Posted June 23, 2009 Hello, I am having a problem with the heating system on my A8. Basically, the cantre vents work perfectly, however, all other vents blow nothing but hot air, no matter what I request from teh system. I believe this may be cause by the heater control valves stuck open. I have checked that the fuse is fine. Can anyone describe where these valves are and how easy they are to replace. Alternatively I am open to any suggestion of how to fix this and would like to hear from anyone who has had the same problem. Thanks for your help. Stephen If you have access to vagcom, diagnostics on the HVAC unit will tell you a lot - It may just be flap position motors that are out of position, or it may be faulty motors, either way shouldn't be too hard to fix Link to comment Share on other sites More sharing options...
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