Question about Dometic Rooftop RV Air Conditioner

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Duo Therm AC not working

AC unit runs and visual inspection appears to be normal. Air flow appears to diminish over time and the air pumped gets warmer until it is ambient temperature. I suspected compressor or coil freeze up, but unit runs normally and was operating at 90+ ambient temps. Any help would be appreciated.

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If unit was freezing up the air flow would normally stop, until the unit is turned off and allowed to thaw. I suspect evaporator blower may have a worn out belt, or compressor is shutting off due to control or internal overheat. What is the age of the unit?

Posted on Aug 07, 2008

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