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VN 780 sleeper fan switch indicator light not working

Discussion in 'Volvo Forum' started by KB3MMX, Aug 16, 2015.

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  1. Aug 16, 2015 #1
    KB3MMX

    KB3MMX Road Train Member

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    Hello all,

    I have a problem with my sleeper fan control switch near driver's seat.

    The indicator light in the middle of the switch used to illuminate if the fan was set to run, now it does not.

    I have replaced with a brand new switch and the light doesn't work on it either...very strange.

    Any ideas ?


    Thanks!
     
    KB3MMX, Aug 16, 2015
    KB3MMX, Aug 16, 2015
    #1
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  3. Aug 16, 2015 #3
    4play

    4play Light Load Member

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    Light probably burned out.
     
    4play, Aug 16, 2015
    4play, Aug 16, 2015
    #3
  4. Aug 17, 2015 #3
    KB3MMX

    KB3MMX Road Train Member

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    It's a Brand new switch
     
    KB3MMX, Aug 17, 2015
    KB3MMX, Aug 17, 2015
    #3
  5. Aug 18, 2015 #4
    KB3MMX

    KB3MMX Road Train Member

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    Bump
     
    KB3MMX, Aug 18, 2015
    KB3MMX, Aug 18, 2015
    #4
  7. Aug 23, 2015 #5
    KB3MMX

    KB3MMX Road Train Member

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    Light burned out in the new switch?
     
    KB3MMX, Aug 23, 2015
    KB3MMX, Aug 23, 2015
    #5
  8. Aug 29, 2015 #6
    KB3MMX

    KB3MMX Road Train Member

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    Anyone?
     
    KB3MMX, Aug 29, 2015
    KB3MMX, Aug 29, 2015
    #6
  9. Sep 3, 2015 #7
    Burdisco

    Burdisco Light Load Member

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    When you exchange it for the one in the back panel what happens.
     
    Burdisco, Sep 3, 2015
    Burdisco, Sep 3, 2015
    #7
  10. Sep 5, 2015 #8
    KB3MMX

    KB3MMX Road Train Member

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    It's a brand new switch out of the sealed plastic bag from Volvo.
    Guess I'll exchange it and see if another new one fixes it.
     
    KB3MMX, Sep 5, 2015
    KB3MMX, Sep 5, 2015
    #8
  11. Sep 5, 2015 #9
    Burdisco

    Burdisco Light Load Member

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    No. No. Not the point. Its called substitution. You put the new switch and your old one in the back and see if it lights. If it does then there is a small issue with the wiring to the switch. On the switch it self there is a separate ground for the light when you turn the light on and then a ground for the light when you "switch" the switch. It is most likely a simple lucar issue.
     
    Burdisco, Sep 5, 2015
    Burdisco, Sep 5, 2015
    #9
    KB3MMX Thanks this.
  12. Sep 5, 2015 #10
    KB3MMX

    KB3MMX Road Train Member

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    Orrstown, PA
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    Oh ok, thanks I'll try that
     
    KB3MMX, Sep 5, 2015
    KB3MMX, Sep 5, 2015
    #10
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