Question about Dometic Rooftop RV Air Conditioner

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Fan cutting on and off every 5 mins

I have a coleman roof mount blowing cold air but runs for 10 mins then fan stops blowing but compressor still runs then about 5 mins later the fan cuts back on

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The only thing that is going to but the fan off is the thermostat. When the fan stops, immediately check the thermostat on the wall. See is there is power between the B terminal and the GH terminal. If none, then replace the thermostat. If there is, then replace the control board in the AC. That means that the fan relay on the printed circuit board is weak.

Posted on Jul 04, 2009

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