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No heat & heater exchange sensor code

Discussion in 'Volvo Forum' started by TheEnglishMan, Sep 12, 2013.

  1. Sep 12, 2013 #1
    TheEnglishMan

    TheEnglishMan Light Load Member

    231
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    Oct 3, 2012
    0
    As title suggests. 07 780 with D12. Can anyone tell me where the sensor is located? It's not the sensor behind the four slats in the center dash trim inline with the 12v outlets and above the ashtray is it?
    AC works fine but I get almost zero heat.
    thanks.
     
    TheEnglishMan, Sep 12, 2013
    TheEnglishMan, Sep 12, 2013
    #1
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  3. Sep 12, 2013 #2
    richard schenfeld

    richard schenfeld Bobtail Member

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    Jul 31, 2013
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    turn on the water valve for hot water to get to your heater core under the hood
     
    richard schenfeld, Sep 12, 2013
    richard schenfeld, Sep 12, 2013
    #2
  4. Sep 12, 2013 #3
    TheEnglishMan

    TheEnglishMan Light Load Member

    231
    59
    Oct 3, 2012
    0
    What?

    i have an electrical code. Nothing to do with coolant circulating around the heater core.
     
    TheEnglishMan, Sep 12, 2013
    TheEnglishMan, Sep 12, 2013
    #3
  5. Sep 12, 2013 #4
    Pablo-UA

    Pablo-UA Road Train Member

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    Borispol, Ukraine
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    plz post code in MID 128 standard
     
    Pablo-UA, Sep 12, 2013
    Pablo-UA, Sep 12, 2013
    #4
  7. Sep 12, 2013 #5
    TheEnglishMan

    TheEnglishMan Light Load Member

    231
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    Oct 3, 2012
    0
    Code showing on Driver Display is..

    MID 146 SID 13 FMI 3
    Electrical Fault, Heater Exchange Temperature Sensor, Fault Active

    i have heat blowing from the sleeper vents, just not from the dash vents.
     
    TheEnglishMan, Sep 12, 2013
    TheEnglishMan, Sep 12, 2013
    #5
  8. Apr 28, 2014 #6
    Truckin' Monkey

    Truckin' Monkey Light Load Member

    122
    100
    Feb 28, 2013
    Richmond, VA
    0
    Did you ever find the answer to this problem? I'm having the same issue.
     
    Truckin' Monkey, Apr 28, 2014
    Truckin' Monkey, Apr 28, 2014
    #6
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