Question about Dometic Rooftop RV Air Conditioner

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Coleman RV Rooftop Air conditioner

The unit comes on run cold then the comperssor shut off (I think that's what shuts off) then a few minutes later it tries to come back on to make cold air but trip the breaker.

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  • Rich Bo Mar 05, 2008

    I was able to try you solution the other day. I did the cleaning and found that I have no filters, (so I will get some). I did the cleaning and ran the unit while I had the covers off and it ran great. After I replaced the covers it started to cycle to often and I remembered that I read a solution for this, the return is sucking cold air from the output so I will need to make sure they are sealed from each other better. Thank you very much, I am sure you saved me many dollars and will share this site with others.

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If the compressor is tripping the breaker, then its 1 of 2 things. First clean the coils and change the air filter. If the coils are dirty and/or the filter is clogged, it will make the compressor overload and the high amp draw will make the breaker trip. If this doesn't solve the problem, you need to check the compressor itself. remove the connections at the compressor, leaving only 3 posts on it. You will need a meter to check for continuity to all 3. They should all have continuity to each other. While there check the wires. Sometimes a burnt wire will come off and arc on something causing the breaker to trip, if you are lucky.

Posted on Mar 02, 2008

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