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Anonymous Posted on Jun 02, 2017

Dometik Duo Therm Brisk Air rooftop trips AC circuit breaker when the weather turned hot. When circuit breaker is reset, the unit will run for 5-10 minutes, cooling nicely, and then trip the AC circuit breaker again. I changed the settings, but it did the same. Once the outside temperature went down, that evening, I tried it again. The AC worked fine all night and the next morning,and when it got hot outside next morning same thing, trip the breaker

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Thomas Woodburn

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  • Posted on Jun 02, 2017
Thomas Woodburn
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Sounds like you have loose wiring. Likely in the disconnect. Wires are getting hot because of a poor connection, then tripping breaker. Turn breaker off and inspect all high voltage wiring.

If you need further help, reach me via phone at https://www.6ya.com/expert/thomas_092728000e6acb79

Andy

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  • Expert 117 Answers
  • Posted on Jun 02, 2017
Andy
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Your unit have dirty coil.
Shut unit off and clean the coil also change filter for indoor unit .Unit is shutting off on high head pressure

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2 Related Answers

Anonymous

  • 2 Answers
  • Posted on Sep 16, 2008

SOURCE: 579 series, 13.5K BTU Rooftop trips AC circuit breaker in hot weather...

Is your condensing unit located in a well ventilated area and have an ample space, atleast a foot, from the rooftop flooring? Just make a check that free flowing outside air properly ventilates the condensing unit specially on high ambient temperatures. Hope this would solve your problem

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Mike Butler

  • 6674 Answers
  • Posted on Jul 25, 2010

SOURCE: AC runs for 5 minutes and then circuit breaker

What else do you have running on hydro while AC is running? Such as coffee maker, microwave, water heater, fridge. That 30 amp breaker is your main breaker I assume, or breaker on pole your plugged in to. Keep in mind your AC will normally draw approx. 15-17+ amps momentarily when compressor kicks in to cool, then drop back to 12-15 amps when running normal. If your AC is drawing too much current, then you would only normally trip 20 amp breaker for AC in your panel. Try switching other appliances to gas operation while running AC, such as water heater, and fridge. Make sure incoming voltage is up to specs as well . (115-120 volts)
If water heater takes 5-8 amps, and fridge takes same when they are calling for power, you'll be close or over the 20amp mark when you consider your on board converter etc. as well. That only leaves approx 10 amps for AC that requires approx 15 amps to run, and up to 20amps when compressor kicks in. If you switch all those other items over to propane, and it still happens, then a current draw test should be done on AC unit to see if perhaps a capacitor is faulty, or possible compressor faulty.

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0helpful
1answer

AC runs for 5 minutes and then circuit breaker

What else do you have running on hydro while AC is running? Such as coffee maker, microwave, water heater, fridge. That 30 amp breaker is your main breaker I assume, or breaker on pole your plugged in to. Keep in mind your AC will normally draw approx. 15-17+ amps momentarily when compressor kicks in to cool, then drop back to 12-15 amps when running normal. If your AC is drawing too much current, then you would only normally trip 20 amp breaker for AC in your panel. Try switching other appliances to gas operation while running AC, such as water heater, and fridge. Make sure incoming voltage is up to specs as well . (115-120 volts)
If water heater takes 5-8 amps, and fridge takes same when they are calling for power, you'll be close or over the 20amp mark when you consider your on board converter etc. as well. That only leaves approx 10 amps for AC that requires approx 15 amps to run, and up to 20amps when compressor kicks in. If you switch all those other items over to propane, and it still happens, then a current draw test should be done on AC unit to see if perhaps a capacitor is faulty, or possible compressor faulty.
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The unit will draw more current when hot. Check rating of the breaker against the rating recommended by the manufacturer.
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My Duo Therm Runs good until the outside Temp. Reaches about 75 dregees Then starts kicking off the braker. What would cause this?

Too many things on the same circuit. Try turning everything electrical off but the ac and see if it stops tripping the breaker.

If you need further help, reach me via phone at https://www.6ya.com/expert/dan_73bbd84fe1d95b61

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579 series, 13.5K BTU Rooftop trips AC circuit breaker in hot weather...

Is your condensing unit located in a well ventilated area and have an ample space, atleast a foot, from the rooftop flooring? Just make a check that free flowing outside air properly ventilates the condensing unit specially on high ambient temperatures. Hope this would solve your problem
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my duo therm air works beautifuly all day but at night when we go to bed it seams to turn on and shut off rapidly. what could be wrong?
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