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TriPac APU not cranking

Discussion in 'Trucks [ Eighteen Wheelers ]' started by Stuiie, Mar 27, 2013.

Page 1 of 2
  1. Mar 27, 2013 #1
    Stuiie

    Stuiie Bobtail Member

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    Mar 27, 2013
    0
    Im working with a Thermo King TriPac apu
    When I turn the unit on I can get fuel to the IP but the engine will not crank
    Checked all the fuses
    I have reset the circuit breaker on the outside of the underbunk control box and still no cranking
    I also get this code on the control panel not sure if it is this "En9" or this "Eng".
    Thanks for the assitance.
     
    Stuiie, Mar 27, 2013
    Stuiie, Mar 27, 2013
    #1
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  3. Mar 27, 2013 #2
    Winkjr

    Winkjr Road Train Member

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    Oct 18, 2011
    Marlton NJ
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    What about the switch inside the engine box? See if that's turned off.
     
    Winkjr, Mar 27, 2013
    Winkjr, Mar 27, 2013
    #2
  4. Mar 27, 2013 #3
    Stuiie

    Stuiie Bobtail Member

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    Mar 27, 2013
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    That is on I even turned it on and off several times just to make sure the switch wasnt bad but nothing changed.
     
    Stuiie, Mar 27, 2013
    Stuiie, Mar 27, 2013
    #3
  5. Mar 27, 2013 #4
    Stuiie

    Stuiie Bobtail Member

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    Mar 27, 2013
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    Are there any other fuses or circuit breakers other than what is in that control box under the bunk that could be affecting the engine from cranking?
     
    Stuiie, Mar 27, 2013
    Stuiie, Mar 27, 2013
    #4
  7. Mar 27, 2013 #5
    Winkjr

    Winkjr Road Train Member

    1,804
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    Oct 18, 2011
    Marlton NJ
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    The tripac had a major issue with a 30 amp fuse that kept blowing. How old is that tripac?
     
    Winkjr, Mar 27, 2013
    Winkjr, Mar 27, 2013
    #5
  8. Mar 27, 2013 #6
    Winkjr

    Winkjr Road Train Member

    1,804
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    Oct 18, 2011
    Marlton NJ
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    Winkjr, Mar 27, 2013
    Winkjr, Mar 27, 2013
    #6
  9. Mar 27, 2013 #7
    Stuiie

    Stuiie Bobtail Member

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    Mar 27, 2013
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    Not sure it was on the truck when my boss got it.
    Where is this 30aml fuse located that your talking about?
    Thanks for the link
     
    Stuiie, Mar 27, 2013
    Stuiie, Mar 27, 2013
    #7
  10. Mar 27, 2013 #8
    Hardlyevr

    Hardlyevr Road Train Member

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    Jul 30, 2009
    Mapleton Depot,PA
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    There are 3 fuses in the pigtails at the control box, in the side box. Make sure that the safety switch under the engine cover has not been bumped, the engine will not start if it has been. Some of the earlier models had problems with grounding. I ended up running a ground cable from the TriPac engine block to the frame of the box, and another cable back to the batteries from the frame, as it was not getting a good ground against the truck's frame rails.

    Is it cranking, or are you just getting the code?
     
    Hardlyevr, Mar 27, 2013
    Hardlyevr, Mar 27, 2013
    #8
  11. Mar 27, 2013 #9
    Stuiie

    Stuiie Bobtail Member

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    Mar 27, 2013
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    It is not cranking at all
     
    Stuiie, Mar 27, 2013
    Stuiie, Mar 27, 2013
    #9
  12. Mar 28, 2013 #10
    SimD

    SimD Light Load Member

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    Dec 23, 2012
    dallas, tx
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    There is a resettable circuit breaker by the APU computer
     
    SimD, Mar 28, 2013
    SimD, Mar 28, 2013
    #10
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