Question about Dometic Rooftop RV Air Conditioner

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DuoTherm compressor starts but will not continue to run

DuoTherm Rooftop AC 1350 Compressor comes on and fan slows, compressor runs for a few seconds and seems to cool thre air but kicks off and after a moment does the same everything seems to work except the compressor does not continue to run. Thanks CN

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Check condenser fan if running. it will make compressor comes on and off if broken

Posted on Jun 01, 2009

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thermostat or relay module issue.

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I have my dometic Rooftop ac unit. The heatstrip/fan run perfectly but when I turn on the ac...the fan runs good but when the compressor kicks on it just hums.


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May 09, 2010 | Dometic Rooftop RV Air Conditioner

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I have a duotherm rooftop ac. fan runs fine but when comppressor starts it runs for 5 or 10 seconds and shuts down


I'm not familiar with these units so this is very general. Your compressor could be shutting down due to low pressure. You would need to get the refrigerant charge checked. It might be due to an overload tripping, which would then reset itself. If you had a schematic or something to send me I could tell you more.

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Unit won't turn on


WHEN A COMPRESSOR FIRST STARTS TO RUN THERE IS AN INITIAL HIGH STARTING CURRENT(30 AMPS PLUS),BUT THIS SHOULD DROP BACK DOWN TO RUNNING CURRENT PRETTY QUICKLY.IF IT MAINTAINS THIS HIGH STARTING CURRENT FOR A WHILE THEN THIS GENERALLY INDICATES THE COMPRESSOR AT FAULT,BUT!!!!! ALSO CHECK TO SEE IF THE FAN IS NOT SEIZED. DISCONNECT THE FAN ELECTRICALLY THEN RUN THE UNIT. IF THE STARTING CURRENT MAINTAINS APPROX 6 AMPS THEN THE FAN IS AT FAULT!........HOPE THIS HELPS!!
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Oct 15, 2009 | Dometic Rooftop RV Air Conditioner

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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

My RC air conditioner (Duotherm) kicks the circuit breaker every time I turn it on. It used to kick the circuit breaker every so often, but lately it kicks it immediately if I try to turn on the AC.


Try replaceing the start or run capacitor to the compressor. If no help you can install a start assist capacitor, it helps to start a tight compressor.

Sep 10, 2009 | Dometic Rooftop RV Air Conditioner

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AC Kicking OFF Breaker


Sounds like you have a problem with your compressor. If the beaker trips the second the compressor tries to come on hen it is shorted. If it takes a couple of seconds, then your compressor is locked up.
seth

Jul 03, 2009 | Dometic Rooftop RV Air Conditioner

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