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Duo Therm A/C unit will not run

RV is 4 years old, had not been used in almost 2 years. Brought home today, plugged into 20 amp outlet. Turned unit on, but fan does not seem to come on. Compressor tries to come on, but soon stops. After a few minutes it tries to come on again, but stops again. Fan does not work in "on" position or "auto".

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  • rbeaman Jul 31, 2008

    2005 Nomad Camper with Duo-therm A/C. A/C Unit hums and acts like it is going to run, then shuts off. Can't get fan to run in "on" or "auto". Furnace fan also will not come on, regardless of fan setting

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Check out the fan blade first and make sure you don't have a dirt dauber that has made a home large enough to stop your fan. I've had that happen on fans that weren't used for a while. The top cover is easy to remove so that you can see if the fan blades are turning freely by hand. If it turns freely by hand, then most likely the fan motor is out as burzerko says.

Posted on Jun 24, 2008

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It appears you may have a bad fan motor the reason the compressor stops is it is kicking out a low pressure switch to protect the compressor. You may be better taking it to an RV shop because I think you will have to remove the evap coil to change out the fan motor.

Posted on Jun 22, 2008

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