Comfort Pro Apu Issues (solved)

Discussion in 'Trucks [ Eighteen Wheelers ]' started by mitchtazz, Apr 12, 2014.

  1. Nikolai4

    Nikolai4 Bobtail Member

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    Dec 13, 2020
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    Hi guys, my apu is running, ac/heat working but 110 outlets doesn’t work, I checked 35a everything good.
    On control panel in cab power outlet img ( lightning) show power is on but very quickly changed to power off and on again.
    Any ideas?
     
    bzinger Thanks this.
  2. bzinger

    bzinger Road Train Member

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    Dec 10, 2014
    omaha , ne
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    If your heat is in high mode ( carrier) you won't have power at the plug.
     
  3. Nikolai4

    Nikolai4 Bobtail Member

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    Dec 13, 2020
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    I know that, but when heat is turned off problem is not gone.
     
    bzinger Thanks this.
  4. bzinger

    bzinger Road Train Member

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    omaha , ne
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    Ok then I'd guess a wiring issue if the gfi on the outlet isn't tripped .
     
  5. Nikolai4

    Nikolai4 Bobtail Member

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    Dec 13, 2020
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    Unfortunately no that problem, just checked all wires and tightened generator belt, will check in evening voltage from generator, I think it’s capacitor I hope not generator))
    Is the system has more fuses or breakers for outlets?
    Only 35a and on outlets?
     
    bzinger Thanks this.
  6. bzinger

    bzinger Road Train Member

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    omaha , ne
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    Yeah thats all lm aware of .
     
  7. torque621

    torque621 Bobtail Member

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    Jan 25, 2019
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    I am running into an issue with my APU. It was hard starting my low voltage disconnect alarm would sound briefly when starting. More frequently lately it would show crank limit msg, then the other day it wouldn’t even try. I tapped the starter and then it started. Based on that I figured the starter was bad. I purchased a new one and installed it. In order to make access to the starter easier I removed the alternator. I then replaced the starter and reinstalled the alternator. I started the APU and seemed fine. Put my skirts back on and buttoned everything back up. I ran comfort monitor all night and did not have an issue. The next night when I turned on comfort monitor it ran fine then my lvd alarm went off and turned my power off. I reset my lvd and it did the same thing again when I ran the APU. That night the battery monitor mode kicked it on and again tripped the lvd. Fast forward a couple of nights of not using it. Decided to give it a shot again and still having trouble with it tripping lvd when it is running. Can the alternator actually put a drain on the battery when running? I have cleaned the contacts with electronic contact cleaner and the truck batteries are less that a year old.
     
    bzinger Thanks this.
  8. trees

    trees Road Train Member

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    Jun 29, 2010
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    Check the generator belt, might be slipping.
     
  9. trees

    trees Road Train Member

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    Jun 29, 2010
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    When my starter went it did what yours did. You could have 2 problems at the same time, bad starter, weak gen belt..
     
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