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Thermo King TriPac APU Problem

Discussion in 'Trucks [ Eighteen Wheelers ]' started by Cassini, Jul 23, 2018.

Page 1 of 2
  1. Jul 23, 2018 #1
    Cassini

    Cassini Bobtail Member

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    Jul 23, 2018
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    Hello, I've searched this whole forum and can't find a solution for my apu. The problem I'm having is, when I turn my apu on, the blower will run for five seconds, turn off and a red triangle will show along with the word "ENG."

    After the blower stops, the apu will crank for two seconds and shut down. I've checked the antifreeze, oil and all of the fuses. Could someone help me out please?
     
    Cassini, Jul 23, 2018
    Cassini, Jul 23, 2018
    #1
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  3. Jul 23, 2018 #2
    Oldironfan

    Oldironfan Road Train Member

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    If you have a evolution. I will bet my last dollar it's your expansion valve, or evaporator.
     
    Oldironfan, Jul 23, 2018
    Oldironfan, Jul 23, 2018
    #2
  4. Jul 23, 2018 #3
    Cassini

    Cassini Bobtail Member

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    Jul 23, 2018
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    Yes, it's an Evolution lol. Is there anything I could do until I get to a shop this Friday?
     
    Cassini, Jul 23, 2018
    Cassini, Jul 23, 2018
    #3
  5. Jul 23, 2018 #4
    Oldironfan

    Oldironfan Road Train Member

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    Nope.
     
    Oldironfan, Jul 23, 2018
    Oldironfan, Jul 23, 2018
    #4
    driverdriver Thanks this.
  7. Jul 23, 2018 #5
    driverdriver

    driverdriver Road Train Member

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    You need to hook up a latop to read the code.
    Could be anything from low coolant to high or low presure switch.
    And yes you have to be able hook up and read the codes
    You need to get it to a shop.
     
    driverdriver, Jul 23, 2018
    driverdriver, Jul 23, 2018
    #5
  8. Jul 23, 2018 #6
    JonJon78

    JonJon78 Road Train Member

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    Jul 1, 2018
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    Sounds like a heat sensor
     
    JonJon78, Jul 23, 2018
    JonJon78, Jul 23, 2018
    #6
  9. Jul 23, 2018 #7
    Oldironfan

    Oldironfan Road Train Member

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    50/50 odds what I've stated. The new expansion valves are plastic internals. Just to save .02 cents.
     
    Oldironfan, Jul 23, 2018
    Oldironfan, Jul 23, 2018
    #7
  10. Jul 23, 2018 #8
    Cassini

    Cassini Bobtail Member

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    5
    Jul 23, 2018
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    I just checked my evaporator, and it's full of water at the bottom. What could cause this?
     
    Cassini, Jul 23, 2018
    Cassini, Jul 23, 2018
    #8
  11. Jul 23, 2018 #9
    Cassini

    Cassini Bobtail Member

    7
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    Jul 23, 2018
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    Ok. Thank you very much, I'll just idle the truck until I get it fixed.
     
    Cassini, Jul 23, 2018
    Cassini, Jul 23, 2018
    #9
  12. Jul 23, 2018 #10
    Oldironfan

    Oldironfan Road Train Member

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    May 22, 2017
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    Probably condensation.
     
    Oldironfan, Jul 23, 2018
    Oldironfan, Jul 23, 2018
    #10
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