I have a new 2009 5th wheel, 1 week old. It has a Dometic AC Unit on it.When running unit for entended time the compressor will not shut down. The throstat will shut the fan off. but not the compressor. I have to go to the main breaker to shut the compressor off, after 1-2 hour of the breaker being switched off the compressor with start working properly. This has happened 3 time this past week.
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Re: compressor on ac unit
It could be a relay for the compressor is sticking in the run position. If it is only about one week old take it back to the dealer for service or call them and tell them your problem. This should be covered by warranty and the dealer can refer you to someone authorized to do the work.
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www.irv2.com > ... > RV Systems & Appliances Jan 22, 2012 - 12 posts - 4 authors
Duo Therm by Dometic 13500 BTU air conditioning with ducting, furnace. I. ... If the fan runs but no cold air and the compressor feels like it is ...
Whether to replace the entire unit or repair it is a tough decision. If the unit is not very old and was working fine before the fan motor froze up, then I do not think that it is necessary for the entire unit to be replaced. With a new unit of course comes the new warranty.
It is not difficult at all to replace the upper unit of the air conditioner. What you have to look for and make sure of is that the ceiling pack or Air Distribution Box (inside unit of AC) that you currently have is compatible with the new Upper Units. Get the part number off of the inner unit and make sure that it is compatible with the part number of the new upper.
Again, it is much less expensive to replace the fan motor than the entire unit (especially Dometic). You could replace the fan motor and get another 10 years out of the AC or, you could replace it and only get 1 year out of it. That is your call.
Just a word of precaution. Dometic Air Conditioners are very hard to find right now due to an industrial accident that occurred at the AC plant. Most distributors and service centers are 6 to 8 weeks out on getting a Dometic AC in stock. That is something else to think about.
You must have too many things running on that circuit. Check your connection to the power box.Loose connection on the receptacle can cause the breaker to trip or too many things running on the same circuit. If the breaker is old it might need to be replaced.
If the compressor never kicks in, I would check the start capacitor, thermostat and the compressor windings. Most times the start capacitor is defective. Some window air conditioners the fan will run while the compressor stop through the thermostat switch. If the thermostat switch is bad every thing runs except the compressor. Let me know, Thanks, Sea Breeze