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    MLOates's Avatar
    MLOates Posts: 2, Reputation: 1
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    #1

    Oct 10, 2009, 07:53 AM
    AC breaker kicking off
    The breaker to our AC keeps shutting off. No set time that it runs before doing this. Sometimes 15 minutes, others several hours.
    I have changed out the breaker already. AC checked for freon , that was OK and unit was cleaned. Does blow cold when on.
    What is the next step?
    Stratmando's Avatar
    Stratmando Posts: 11,188, Reputation: 508
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    #2

    Oct 10, 2009, 08:03 AM

    Do you have 1 breaker for all ac, or a breaker for inside Air Handler and 1 for Outside Compressor Unit?
    Could be Compressor, An Amprobe may show too much current from inside or outside fan, or compressor.
    hkstroud's Avatar
    hkstroud Posts: 11,929, Reputation: 899
    Home Improvement & Construction Expert
    		  
    #3

    Oct 10, 2009, 02:55 PM

    Does breaker meat minimum size stated by compressor manufacturer.
    MLOates's Avatar
    MLOates Posts: 2, Reputation: 1
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    #4

    Oct 10, 2009, 03:30 PM
    Yes 40 amp breaker is new
    Missouri Bound's Avatar
    Missouri Bound Posts: 1,532, Reputation: 94
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    #5

    Oct 10, 2009, 07:56 PM
    Follows Stratmando's advice, have someone check the amperage. I'd bet that the condenser fan or compressor is drawing excessive amperage... how old is the unit? Motors which start to fail often heat up and begin to draw excessive amperage. The compressor is more likely the culprit here, but an amprobe test on individual components will verify. Good luck
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