Espar bunk heater question

Discussion in 'Trucks [ Eighteen Wheelers ]' started by Lee Thompson, Oct 9, 2018.

  1. Lee Thompson

    Lee Thompson Bobtail Member

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    Sep 28, 2018
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    I previously posted about my bunk heater problem. But the video that was suggested, doesn’t address my problem. My heater works, to well, I start it and regardless of where I set the temperature, it just keeps getting hotter, till I have to shut it off. I need help with, is it the digi controller that is bad, or the ecm module, in the heater itself?
     
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  3. driverdriver

    driverdriver Road Train Member

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    So are you saying it keeps blowing full blast even after reaching set temperature.?
    Mine continues to blow but at a significantly reduced flow of air.
    Sometimes I just have to shut it off.
    Sometimes I crack both windows.
     
  4. uncleal13

    uncleal13 Road Train Member

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    What style of controller / thermostat do you have?
     
    Lee Thompson Thanks this.
  5. Lee Thompson

    Lee Thompson Bobtail Member

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    image.jpg
     
  6. Lee Thompson

    Lee Thompson Bobtail Member

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    Yea it blows full blast till it gets to hot for me and I shut it off
     
  7. brysol01

    brysol01 Medium Load Member

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    just bought a truck with one, seemed to work good but quit, are you suppose to have it on with the truck running?
     
  8. Lee Thompson

    Lee Thompson Bobtail Member

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    Sep 28, 2018
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    Mine is set up to shut off when the trucks running, or the key is in the run pos
     
  9. driverdriver

    driverdriver Road Train Member

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    No.
    And when you turn it off you need to let burn off before you start your truck.
    Takes 3 to 5 minutes , put your hand by the vent when it completely stops blowing you can start your truck.
     
    sealevel Thanks this.
  10. driverdriver

    driverdriver Road Train Member

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    Sounds like you need to get it serviced.
     
  11. Luwi67

    Luwi67 Heavy Load Member

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    Your thermostat or sensor is in a position where it is too cold and gets no heat. Try moving it closer to where you usually are and see what happens.
     
    uncleal13 Thanks this.
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