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  1. #1

    Help with a problamatic Trane-immediately trips breaker

    I have an 8yr old Trane TTB042D100A 3 1/2 ton outdoor unit that suddenly died and will trip the breaker INSTANTLY when it starts. No hum or anything. Was working perfectly before. Wiring, low voltage, etc, checks ok.

    The GE cap looks good and specs out 5/40uf.

    There are no shorts to the case or lines from the terminals, but the compressor windings measure around 1 ohm or .2 ohms depending on which terminals you measure. Seems low, but I don't know the spec.

    This is the tricky part, usually there is a short to the case that would cause the trip. That is why I still have hope.

    Do you think a start kit can help this or its time for a new compressor? One tech said if it kills the breaker instantly its finished. Is it possible for a cap to spec out and cause this issue?

    There may have been surges cause other electronic things were ruined around that time, but the A/C could be coincidental.

  2. #2
    Join Date
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    What the hell???

    Call a pro....and not the one that diagnosed your unit over the phone.

    This is not a DIY site. Get a professional to look at your problem.
    I fully support the military and the War on Terrorism.


    If you don't know, then don't do. If you don't know and still do, then be prepared to pay someone else a lot to undo what you did and then do it right.

    If you do know, then do. But do it right. Otherwise, you may not be doing it long.

  3. #3
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    A hard start kit won't help it.

    Its done for.
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    How many times must one fix something before it is fixed?

  4. #4
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    Quote Originally Posted by beenthere View Post
    A hard start kit won't help it.

    Its done for.
    Thanks for making my point
    I fully support the military and the War on Terrorism.


    If you don't know, then don't do. If you don't know and still do, then be prepared to pay someone else a lot to undo what you did and then do it right.

    If you do know, then do. But do it right. Otherwise, you may not be doing it long.

  5. #5
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    Quote Originally Posted by iraqveteran View Post
    Thanks for making my point
    LOL...

    Posted at the ame time.


    Hey, you had fun with that other guy.
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    How many times must one fix something before it is fixed?

  6. #6
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    Quote Originally Posted by beenthere View Post
    LOL...

    Posted at the ame time.


    Hey, you had fun with that other guy.
    which one???

    Mr been doin this 15 years and still can't diagnose a TXV??? Had fun for a few posts......then just went off into nowhere with it. Its was fun. Till Bob ruined it for us
    I fully support the military and the War on Terrorism.


    If you don't know, then don't do. If you don't know and still do, then be prepared to pay someone else a lot to undo what you did and then do it right.

    If you do know, then do. But do it right. Otherwise, you may not be doing it long.

  7. #7
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    Quote Originally Posted by iraqveteran View Post
    which one???

    Mr been doin this 15 years and still can't diagnose a TXV??? Had fun for a few posts......then just went off into nowhere with it. Its was fun. Till Bob ruined it for us
    It went some where just don't know where.

  8. #8
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    Quote Originally Posted by iraqveteran View Post
    which one???

    Mr been doin this 15 years and still can't diagnose a TXV??? Had fun for a few posts......then just went off into nowhere with it. Its was fun. Till Bob ruined it for us
    LOL..
    Yea, that one.

    Can't believe I missed out on it. 6 pages in 2 hours.
    It was closed by the time I got home.
    Contractor locator map

    How-to-apply-for-Professional

    How many times must one fix something before it is fixed?

  9. #9
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    Quote Originally Posted by RDP View Post
    It went some where just don't know where.
    exactly
    I fully support the military and the War on Terrorism.


    If you don't know, then don't do. If you don't know and still do, then be prepared to pay someone else a lot to undo what you did and then do it right.

    If you do know, then do. But do it right. Otherwise, you may not be doing it long.

  10. #10
    Quote Originally Posted by iraqveteran View Post
    What the hell???

    Call a pro....and not the one that diagnosed your unit over the phone.

    This is not a DIY site. Get a professional to look at your problem.
    Well I apologize then, the "rules" say homeowners can post:

    1. Who Is Welcome Here?

    Anyone in the HVAC industry and home or building owners with HVAC/R concerns and other polite and fun people that are willing to contribute.

    I had 2 "pros" come with two different opinions, One said its toast, the other said get a start kit. So I have an engineering background and I'm trying to figure out what is best to do.

    I was thinking somehow the motor is sized and the SK capacitor can give it the extra phase shift to get it started, but then again considering other electrical devices in the house failed I bet it is toasted.

  11. #11
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    west point, ga.
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    OP will be mad in a min.

  12. #12
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    get a new pro......

    an engineering backround doesn't give you the knowledge needed to accurately diagnose the problem....


    but heres a bite of info to chew on....if it trips the breaker, then there are 1 or 2 things occuring. Its its not 1 then its the other. both have totally different solutions to the problem. But the problem is only 1.

    I can't go any further. If the tech said you needed at start kit....why didn't he install one to see??? sounds like a load of crap to me.

    But hey, what could I possibly know??? I'm only a service technician
    I fully support the military and the War on Terrorism.


    If you don't know, then don't do. If you don't know and still do, then be prepared to pay someone else a lot to undo what you did and then do it right.

    If you do know, then do. But do it right. Otherwise, you may not be doing it long.

  13. #13
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    Western NC
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    Quote Originally Posted by lhabc View Post
    Well I apologize then, the "rules" say homeowners can post:

    1. Who Is Welcome Here?

    Anyone in the HVAC industry and home or building owners with HVAC/R concerns and other polite and fun people that are willing to contribute.

    I had 2 "pros" come with two different opinions, One said its toast, the other said get a start kit. So I have an engineering background and I'm trying to figure out what is best to do.

    I was thinking somehow the motor is sized and the SK capacitor can give it the extra phase shift to get it started, but then again considering other electrical devices in the house failed I bet it is toasted.

    They sure do......but they also say this.......





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    I fully support the military and the War on Terrorism.


    If you don't know, then don't do. If you don't know and still do, then be prepared to pay someone else a lot to undo what you did and then do it right.

    If you do know, then do. But do it right. Otherwise, you may not be doing it long.

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