APU Question > Comfort-Pro APU - starts automatically every 5 min - truck engine is off

Discussion in 'Refrigerated Trucking Forum' started by JerryD13, May 15, 2022.

  1. JerryD13

    JerryD13 Light Load Member

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    Oct 17, 2016
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    APU Question > Comfort-Pro APU - so this Comfort-Pro APU -

    PROBLEM > APU starts automatically after the truck is Stopped ---- this happens hours after the truck has stopped and the motor is turned off.

    after turning on .. by itself --- I turn APU OFF -- then in 5 min, it STARTS AGAIN -

    can anyone tell me what is causing this?

    Thanks in Advance

    ======================================================

    HERE IS THE FIX:

    > You got the APU programmed to keep the batteries topped off - when it hits below a set voltage.

    If it turns on immediately the voltage is set pretty high or the batteries are weak.

    Think it’s called the battery monitor.
     
    Last edited: May 15, 2022
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  3. GYPSY65

    GYPSY65 Road Train Member

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    You might have bad batteries and it’s calling for charge
    Also
    There’s a way to set the voltage or amps?
    down some to let it kick on later
     
  4. pumpkinishere

    pumpkinishere Medium Load Member

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    Just curious where do you have your comfort pro serviced? We haven’t found anyone who works on comfort pros. Ours currently is not starting. It was leaking antifreeze so we turned the line off that runs to it but we need the system serviced. Nobody in our area works on comfort pro. I’m thinking we may have to take it to Ohio to get it worked on.
     
  5. Ffx95

    Ffx95 Road Train Member

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    May 18, 2017
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    You got the apu programmed to keep the batteries topped off when it hits below a set voltage. If it turns on immediately the voltage is set pretty high or the batteries are weak. Think it’s called the battery monitor.
     
  6. 062

    062 Road Train Member

    5,167
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    Oct 20, 2013
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    Is it a carrier unit?
    If so, then carrier Nashville is a good shop.
    Carrier KERNERSVILLE N.C. is good, but slow.
     
  7. pumpkinishere

    pumpkinishere Medium Load Member

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    To be totally honest I’m not sure. I do know it’s a comfort pro and that’s about the extent of it. Lol
     
  8. JerryD13

    JerryD13 Light Load Member

    163
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    Oct 17, 2016
    0
    ------------------------------------------------------------------------------------------------------------------------------------------
    HERE IS THE FIX:

    > You got the APU programmed to keep the batteries topped off - when it hits below a set voltage.

    If it turns on immediately the voltage is set pretty high or the batteries are weak.

    Think it’s called the battery monitor.
     
  9. JerryD13

    JerryD13 Light Load Member

    163
    115
    Oct 17, 2016
    0
    =================================================================
    Comfort Pro is a top-of-the-line system made by Carrier
    heating & Air -- here is a youtube video on them.


     
  10. JerryD13

    JerryD13 Light Load Member

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    Oct 17, 2016
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    GYPSY >> you actually had the issue pegged - - here was the fix

    You got the APU programmed to keep the batteries topped off - when it hits below
    a set voltage.

    ** so on a 34-hour break, the batteries got LOW and the APU kicked in to top
    off the batteries at 1 am }
     
  11. pumpkinishere

    pumpkinishere Medium Load Member

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    Apr 21, 2021
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    Ty for the video
     
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