Question about Dometic Rooftop RV Air Conditioner

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My RC air conditioner (Duotherm) kicks the circuit breaker every time I turn it on. It used to kick the circuit breaker every so often, but lately it kicks it immediately if I try to turn on the AC.

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Try replaceing the start or run capacitor to the compressor. If no help you can install a start assist capacitor, it helps to start a tight compressor.

Posted on Sep 11, 2009

Testimonial: "Thanks for ossible solution, but my husband and I know nothing about RV air conditioners so it would be helpful to know where this capacitor is locate"


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Air Compressor sometimes reaches 50psi and kicks circuit breaker. The motor beld vibrates before kicking breaker off.

Hi Bobby:
Sounds like the load on the circuit exceeds the capacity of the breaker. This happens because as the pressure builds, the resistance of the compressor increases. When it reaches 50 psi (in your circumstance) the circuit starts to draw more amps than the breaker is rated for. so it trips.
- Find a circuit with a higher rating, or
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