jackb_ms Posted November 13, 2014 Share Posted November 13, 2014 Hello AllI have a problem with the heater fan of my Audi A6.When I turn the fan on inside the cabin there is 50% chance it will not start.If i remove the cabin filter and give it a spin with my hand, the fan will spin slowly then gain speed and work until the next time I switch it off.I have change the speed controller. I am a somehow puzzle by this fault.I know AC motors need a capacitor to start but DC motors?Any pointers would be greatly appreciatedJack . Link to comment Share on other sites More sharing options...
DJ. Posted November 13, 2014 Share Posted November 13, 2014 If it is a conventional electric motor, it sounds like part of the armature has burned out. When the brushes are in the wrong place it won't start as no current will flow. I've known this with a starter motor, and it is a real pain. Link to comment Share on other sites More sharing options...
Member Jonathan Kay Posted November 14, 2014 Member Share Posted November 14, 2014 Any sticky spots when you turn it by hand?Jonathan Link to comment Share on other sites More sharing options...
jackb_ms Posted November 16, 2014 Author Share Posted November 16, 2014 No nothing, but on saturday, I drove over a bumb and it started working again.So It migh be an issue with the armature as explain by DJ.I've ordered an second hand one for £20 from ebay. Will replace it and see what happenJack Link to comment Share on other sites More sharing options...
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