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Thread: HVAC Crashed

  1. #1
    ScottD3's Avatar
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    HVAC Crashed

    Since we've been having really cold mornings, my HVAC has decided to crash.

    Nothing happens on any of the buttons, the fan still moves on Auto but I can't change any thing, turn it off but the recirculate button flashes on and then off.

    Any one else noticed this?

    There is no codes on VCDS and after 10mins or so it comes back to life.
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    mine does something similar since i spilt a cuppa over mine. I assumed it was a sticky button preventing me selecting any other feature

  4. #3
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    Quote Originally Posted by Byzan Pics View Post
    mine does something similar since i spilt a cuppa over mine. I assumed it was a sticky button preventing me selecting any other feature
    That might be it.
    My rear demister button is sticking along with two others.
    Time to strip it and clean the buttons I think.

    Want me to do yours?
    A4 B5 Double Din, RNS-d, TMC, Full Sports Leather Heated with Leather Door Cards and Lower Door trims all for sale.

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    My old one use to get stuck on a cold morning and get locked up

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    Quote Originally Posted by ScottB5 View Post
    That might be it.
    My rear demister button is sticking along with two others.
    Time to strip it and clean the buttons I think.

    Want me to do yours?
    I can do it, just am lazy,lol mine has my boost and oil pressure gauge incorporated so not got around to it

  7. #6
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    There's a good chance it's the board going Scott.

    If your button clean doesn't help, open the module and remove the circuit board. 10 minutes at Gas Mark 7 - 8 (that's about 210 - 220 C in new money) will reflow the joints. (This will work VERY well on electronics made post the stupid 2006 EU ruling about lead in solder)

    If it doesn't work, then a new module is in order.
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    ScottD3's Avatar
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    Quote Originally Posted by PAULF View Post
    There's a good chance it's the board going Scott.

    If your button clean doesn't help, open the module and remove the circuit board. 10 minutes at Gas Mark 7 - 8 (that's about 210 - 220 C in new money) will reflow the joints. (This will work VERY well on electronics made post the stupid 2006 EU ruling about lead in solder)

    If it doesn't work, then a new module is in order.
    I'm not putting it in the oven, sod that. lol


    Any one got a single din facelift unit?
    A4 B5 Double Din, RNS-d, TMC, Full Sports Leather Heated with Leather Door Cards and Lower Door trims all for sale.

    Audrey's Build Thread
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    Quote Originally Posted by ScottB5 View Post


    Any one got a single din facelift unit?
    I have two one with heated seats one without
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  10. #9
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    Quote Originally Posted by Sulli79 View Post
    I have two one with heated seats one without
    Thanks.

    I'll clean mine down over the Christmas, if it don't help I'll be touch for the none heated unit.
    A4 B5 Double Din, RNS-d, TMC, Full Sports Leather Heated with Leather Door Cards and Lower Door trims all for sale.

    Audrey's Build Thread
    RIP Audrey. She's being broken down.
    New Car, New Thread.
    Scott's Akoya Silver A8

 

 

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