Question about Dometic Rooftop RV Air Conditioner

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AC runs for 5 minutes and then circuit breaker

RV Rooftop AC (Duo-Therm) runs and cools for about 5 minutes and then the 30Amp circuit breaker trips. After short rest, breaker 'reset'
and same process repeats itself.

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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.

Posted on Jul 25, 2010

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

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