Comfort Pro Apu Issues (solved)

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

  1. BadHardy

    BadHardy Bobtail Member

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    Dec 21, 2017
    0
    The screen came on and I was able to get to the fault screen and its showing CCU 3545 main breaker tripped
     
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  3. BadHardy

    BadHardy Bobtail Member

    3
    0
    Dec 21, 2017
    0
    Thank you for responding and attempting to help! Appreciate it
     
  4. Cpq4gold

    Cpq4gold Bobtail Member

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    Apr 2, 2017
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    Hi
    My confort pro
    At inside display is continuously giving me a message of
    Main engine interlock and don’t start
    Anyone knows what it is
    Thank you
     
  5. WheresWaldo

    WheresWaldo Light Load Member

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    Nov 23, 2016
    Oklahoma
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    The interlock is meant to keep your APU off when the ignition is on. Some people prefer to leave this feature off when they have their units installed.

    So is it properly functioning and your ignition is on. Or you possibly have a relay that is stuck. You can disable this by looking inside your APU on the top right side where the alternator side is, on the firewall you should see a yellow little wire there should be a fuse holder with a 5 amp fuse in there, pull the fuse.
     
  6. Cpq4gold

    Cpq4gold Bobtail Member

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    Apr 2, 2017
    0
    Thanks for your reply
    I disconnected the 12 pin plug last night waited for few minutes and reconnected back and works wall night long fine .
    I tried started again today and same message
    Did the same reset and started again now
    I recently changed myself the generator
     
  7. runningman0661

    runningman0661 Road Train Member

    4,842
    13,276
    Mar 5, 2009
    Clover, South Carolina
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    When I start my APU on ac mode it blows warm air and shows main breaker trip, I reset breaker but doesn’t help anything, what could be causing the breaker to trip?
     
  8. Antinomian

    Antinomian Road Train Member

    1,945
    2,964
    Feb 17, 2013
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    You'll need to say what kind of APU.

    I have a Carrier PC-6000. One of the main wires to my compressor literally burned in two and was shorting against the top of the compressor. I fixed the wire and the problem went away.
     
  9. runningman0661

    runningman0661 Road Train Member

    4,842
    13,276
    Mar 5, 2009
    Clover, South Carolina
    0
    Carrier PC 6000 series
     
  10. WheresWaldo

    WheresWaldo Light Load Member

    109
    64
    Nov 23, 2016
    Oklahoma
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    The breaker is on your CCU board. Theyre non serviceable and you'll need a new board.
     
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