Question about Dometic Rooftop RV Air Conditioner
It is a Dometic (Duo-Therm 15,000). The unit cools well, but it is vibrating. There are no nests on the fan blade. It worked fine 3 weeks earlier.
Take a good look at fan blade for a crack in one or more, as well as turn unit on & watch for vibration , then take a look at mount bushings on all items. Also with fan off (obviously) check shaft for movement, side to side, up & down, in & out. Your gasket between roof should only be compressed approx half it's original thickness. Some manufacturers tighten them down too much and can be a source of vibration as well. Not expensive or hard to change. Don't forget blower wheel as well.
Posted on Jul 22, 2009
You can install rubber pads in between the roof and the aircon base to absorb vibration. Or have it checked for balancing.
I hope this helps.
Posted on Jul 21, 2009
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Posted on Jan 02, 2017
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