Question about Dometic Rooftop RV Air Conditioner

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DUO DERM ROOF TOP AIR

WARM AIR NOT COLD, A MOBILE HOME GUY SAYS IF YOU LET THE AIR CONDITIONER SET FOR A FEW YEARS THE COMPRESSOR FREEZES UP, IS THAT TRUE?

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Yes , this can happen if it sets to long , thats why even cars pumps are engaged when even the heat is turned on , to keep the compressor from siezing up

Posted on Nov 06, 2008

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My air conditioner delivers cold air only in spurts. It then goes into fan mode for a few minutes, then to cold air in a few more minutes. It is over 100 degrees outside and the inside of the house is 85...


Hi,
The unit is probably low on freon and so it is running too cold....this trips the freeze stat and shuts down the compressor till it warms up
The unit will need to be recharged or replaced...

Here is a tip that I wrote about how to add refrigerant to a air conditioner or cooling system

How to add Freon to a Air Conditioner or Refrigeration System

heatman101

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Duo therm roof top camper a/c. fan runs but compressor stopped kicking on all of a sudden. replaced both capacitors; getting 110 to compressor but it still wont kick on


Hi,
Sounds like the compressor is toast...if the caps have been changed and there is voltage there, you have done all you can...replace the compressor or buy new...

heatman101

Sep 01, 2010 | Dometic Rooftop RV Air Conditioner

1 Answer

Blows cold but shuts down no freeze up


Check the capacitor. It should be a dual capacitor , runs both compressor and fan. This sounds like your problem only because both the compressor and the fan go out together. Good Luck Hope I helped

Dave

Sep 16, 2009 | Dometic Rooftop RV Air Conditioner

1 Answer

I have a Duo Therm Roof top Camper air conditioner


how old is unit and does it have refrigerant in it

May 30, 2009 | Dometic Rooftop RV Air Conditioner

1 Answer

Don't panic, but I have a question about my 40 year old duo therm RV roof top AC. I know, it shouldn't be working, but it does. My problem is it will kick on, compressor starts to work and puts out cold...


When you say relay I'm assuming the contactor. Does it shut off again when you let go of the contacts (relay)? Most likely it's low on refrigerant and the low pressure switch is shutting it down.

Feb 26, 2009 | Dometic Rooftop RV Air Conditioner

1 Answer

DUO DERM AIR CONDITIONER


when the cmpressor freeze up. unless you have some machenic know how, it is pretty much useless to anyone. even you can rebuild it. the cost for the parts is more than a new one.

Nov 06, 2008 | Dometic Rooftop RV Air Conditioner

1 Answer

This is a duo derm roof top air conditioner, possible compressor freezing up


If the compressor is not even trying to start you have an electrical problem in the circuit for the compressor. The thermostat could be open and not supplying power to the compressor or the thermal overload device could be open.

Nov 06, 2008 | Dometic Rooftop RV Air Conditioner

3 Answers

Duo therm ac problem


Same problem. I have a 2005 on a Rockwood Roo. Worked fine in October 2009. Not working June 2010. Problem is not a freon leak, compressor went bad. I banged the compressor gently with rubber mallet then with a hammer but that did not work. The fan runs, the compressor runs but gets hot. Also no indication of freon moving through system as everything gets warm from the compressor outward.

Aug 25, 2008 | Dometic Rooftop RV Air Conditioner

1 Answer

2000 roof-top Brisk-Air


I think you have a high pressure cutoff cycling the compressor on and off. Clean the filter inside the unit. Then with a hose clean out the foil condenser filter on top of the camper. Also you may need to buy a coil comb and comb out bent or damaged areas of the condenser coil on the unit that is above the roof of the camper.

Jun 09, 2008 | Dometic Rooftop RV Air Conditioner

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