apu makes rhythmic clicking sound

Discussion in 'Trucks [ Eighteen Wheelers ]' started by pbrstreetgang, Oct 4, 2015.

  1. pbrstreetgang

    pbrstreetgang Light Load Member

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    California
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    thermo-king tripac, about 2008 or 2009.

    (only when the a/c unit is on)—> two-click repeating sequence: click #1, followed .8 seconds later by click #2….then two seconds later this repeats, again and again. clicks coming from the huge air-filter-lookin-thing under the bunk. a/c works fine, though. also…the generator itself (the tripac motor) sort of revs up just a little, barely noticable, along with the rhythm of the clicks.

    like i said the a/c works fine now, but i’m worried because a few months ago the apu was clicking exactly like this but warm air was blowing out....i can't find the invoice but i think there was a hole somewhere where freon was leaking out. but i don't think i have a leak this time. who knows

    any ideas?

    UPDATE: clicking was getting faster so i called the dealer. they said it sounded like a freon leak so i’m just gonna take it in
     
    Last edited: Oct 5, 2015
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  3. heavyhaulerss

    heavyhaulerss Road Train Member

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    you need to replace the pacemaker inside.:biggrin_25523:
     
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  4. icsheeple

    icsheeple Trailing the Herd

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    Is this clicking sound super loud and keeping you up at night? Or, are you just wanting to spend some money.

    If it aint broke....
     
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  5. Straight Stacks

    Straight Stacks Paper Cha$er

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    That's the sound of it "evolving".
     
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  6. pbrstreetgang

    pbrstreetgang Light Load Member

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    haha...yeah she's getting old. the other day she called me a whippersnapper
     
  7. pbrstreetgang

    pbrstreetgang Light Load Member

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    sometimes this philosophy works.....and sometimes it costs me more in the long run! problem is, i never know which until it's too late!o_O:D
     
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  8. pbrstreetgang

    pbrstreetgang Light Load Member

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    i wish it would evolve into something i didn't have to take in every six months :cool:
     
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