Question about Dometic Rooftop RV Air Conditioner

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We have a 2005 Country Coach Allure with 3 Dometic rooftop air conditioner/heat pumps. One of the units will come on start to cool then quickly turn to heat then cool then heat. What could the problem be?

Posted by dtresham1 on

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Anonymous

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Remove top cover of units. clean coils, and filters.A.C. units , and heaters must breathe.If coils are dirty ,system cannot breathe properly.Also, systems should be cleaned yearly,at least.

Posted on Feb 23, 2010

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Hi; Sounds like a problem with the tstat or the defrost sensor. Also have these units been cleaned yearly. Also if the differential between heat and cool is small this will cause the unit to cool then heat due to the low differential at the tstat...alpharome416

Posted on Feb 23, 2010

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