Question about Dometic Rooftop RV Air Conditioner

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Fan runs, shuts down on cool

My Dometic rooftop unit runs with the thermostat on Fan only, but when switched to cool the compressor kicks in for a few seconds then shuts down. When this happens the "low power" light flashes on the thermostat. Would this be a problem with the unit or an electrical issue? Thanks.

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Sounds like a power supply problem. There is enough power to run the fan but when you turn it to cool the current draw by the compressor drops the voltage. The lower power light is telling you the answer to your problem.

Posted on Jul 18, 2008

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