Question about Dometic Rooftop RV Air Conditioner

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Ac Problems Im in FL 93F im hooked up to 110 /30 A and i have the AC running the entire day. The Breaker trips several times a day when the compressor kicks in. If i reset it, the entire inside of the coach is flickering and often the Breaker trips again. It a a 2009 Coachmen Prism so the AC is new, it is a 13.5 BTU Dometic Duotherm Roof Unit. The Breaker box is getting hot too.

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  • 8,220 Answers

You must have too many things running on that circuit. Check your connection to the power box.Loose connection on the receptacle can cause the breaker to trip or too many things running on the same circuit. If the breaker is old it might need to be replaced.

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

Posted on May 10, 2009

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1 Answer

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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)
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The compressor motor , once warm is grounding out due to wear and is going bad.Have the compressor replace while it is still clean is cheeper and easier that doing it after a burn out,which  will eventually happen,if the compressor is tripping the brreaker as I suspect..

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