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Author Topic: Duo-Therm AC tripping breaker  (Read 2909 times)
Barn Owl
Roanoke, VA
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PD4106-1063 "Wheezy Bus"

« on: August 27, 2006, 10:37:55 PM »

I have a Duo-Therm AC unit that cools fine and the blower seems to be working ok, but after about 10-15 min. it trips a breaker. Is there anything I can do or check? I this a sign of an AC unit that is dying? Where do I start?


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Nick Badame Refrig/ACC
1989, MCI 102C3, 8V92T, HT740, 06' conversion FMCA# F-27317-S "Wife- 1969 Italian/German Style"
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Nick & Michelle Badame

« Reply #1 on: August 27, 2006, 11:36:14 PM »

Barn Owl,

If the unit is atill cooling properly when it tripps the breaker, then I would replace the breaker first. The breakers are only good for a dozen or so

tripps before they are weakened. Then see if that still happens.  If it does, then you will have either a fan motor going bad, or the compressor

going bad. Either one is not usually worth fixing.

Hope this helps

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"Foolish Pleasure" 35' MC5A

« Reply #2 on: August 28, 2006, 05:12:49 AM »

You might check to see that the breaker is the proper size (I use 20A breakers on my A/C's) and the guage of the wire.  If the guage of the wire is  AWG12 or larger you're safe to use the 20A breaker.  If the A/C was wired with AWG #14 ga. that could be causing your problem.



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