2012 prostar and espar heater

Discussion in 'International Forum' started by lv gn, Nov 12, 2012.

  1. lv gn

    lv gn Heavy Load Member

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    When I turn the espar heater on, it turns the blower motor in the dashboard on low. is there any way to cancel this by pulling a wire or is it all done with programming? I have the wiring diagram for the heater and it shows no provisions for this. But it looks like the truck was prewired from the factory for the Espar heater. Thx
     
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  3. snowwy

    snowwy Road Train Member

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    seems like it would be a lot of hassle to run a wire from the sleeper to the dash.

    what would be the purpose of the dash fan blowing with the sleeper heater?
     
  4. lv gn

    lv gn Heavy Load Member

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    It must be done in the factory wiring to the computer. I would say it was To recirculate the heat. It's a drain on the batteries that I don't need. And it just blows out cold air from the dash anyway.
     
  5. snowwy

    snowwy Road Train Member

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    i can't really see it recirculating the air though.

    and for the bunk to blow heat while the dash blows cold. doesn't really make sense.

    seems like an electrical issue.
     
  6. Burger

    Burger Bobtail Member

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    Feb 24, 2013
    Paisley On Canada
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    There is a update for wiring on bunk heater. Its now wired direct to battery. So no load shedding. I can run mine for 6hrs now and truck still starts good.
     
    lv gn Thanks this.
  7. Pablo-UA

    Pablo-UA Road Train Member

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    really there is wire and small relay that turns blower and low speed. What is the heater model? I can find diagram for you with wire number
     
  8. lv gn

    lv gn Heavy Load Member

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    las vegas nv.
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    Mine is the D2 12 volt. Part #25 2069 05
     
  9. Lux Prometheus

    Lux Prometheus Heavy Load Member

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    Oct 28, 2013
    San Venganza, Tx
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    Bump.

    I'm driving a 2012 Prostar with the maxfarce motor, and every time I run the sleeper heat, the dash fan runs and blows cold air, and it feels like outside air. Is there a solution for this?
     
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