Question about Dometic Rooftop RV Air Conditioner

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My rooftop air cond.works fine at night or when it is cooler ,but when it gets hotter it runs for a while then trips breaker.

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Check the condenser fan and make sure it is running. Let me know what you find.

Posted on Jul 05, 2010

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Just had that one happen. I found the power was 200' away and voltage was dropping to 95 or so when air came on. Lower voltage=higher amperage. Everything slows down and dims. The unit is drawing within speck unless other things are on.

Posted on Jul 08, 2010

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1 Answer

What makes the condenser fan shut off but the compressor keeps running but not every time


Condenser fans cycle on and off to control the temperature/pressure of the refrigerant in the condenser. This is normal operation.

As to cooler weather start up and tripping the breaker; how cold is it when you are running it? If it is too cold you could be pumping liquid refrigerant back to the compressor, slugging it and causing it to trip a breaker. However, many things can cause an air conditioner to over-amp and trip a breaker but this tends to be more problematic as the weather is hotter.

Feb 20, 2015 | Heating & Cooling

1 Answer

Rv ac throws the breaker when outside temp gets high, unit works fine at night when outside temp cools down


Clean evap and cond coils
Place hand on a/c if too hot during the day but cool at night
then freon is being restricted in the condensor
Cleaning coils may help days
Put a trickle of water on the condensor during the day for a test.

.If this was helpful please rate me.
Leo Ponder Appliance-Tyler,Texas
imufo2@sbcglobal.net

Aug 07, 2010 | Dometic Rooftop RV Air Conditioner

1 Answer

My air cond is blowing the 20 amp breaker when camping but runs just fine for the dealer. It blew 11 times in 48 hours last weekend.


Ifr you are plugging into a external source for power, they or whereever you are camping has the wiring issues, to small of wire

Jun 17, 2010 | Dometic Rooftop RV Air Conditioner

1 Answer

PART # 7330B730 SERIAL # 109734610 1997-TIMBERCREEK R.V.


most of the time the condenser coil is dirty and needs to be washed out. with it dirty the pressures are elevated and causes compressor to kick out on overload. try washing cond. coil first

Sep 12, 2009 | Dometic Rooftop RV Air Conditioner

2 Answers

Unit shuts off on hot days


It may be low on refrigerant. On hotter days, the compressor has to run longer to reach the temperature you have on your thermostat. Have it checked for the proper refrigerant charge and have them test how many amps that the compressor is pulluig as well. With the proper breaker installed, the unit should not be tripping out. Make sure that the breaker that is in there now is actually the proper one for your unit.
Best regrds, --W/D--

Aug 01, 2009 | Dometic Rooftop RV Air Conditioner

1 Answer

Domestic a/c runs fine for hours then trips circuit breaker


Check the difference between your incoming voltages at these times, it may be, if your plugged in to park power, the voltage getting to you may be less due to neighbors using more. If you have a genny, try using it when this happens and see if it trips. More lights, TV's etc are probably being used at night by others.

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2 Answers

Circuit breaker overheating on rooftop ac after


Possible overcharge or bad breaker. You need to check the amp draw for the unit. If you draw under full load amps and trips breaker breaker is bad.Rus

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1 Answer

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Is your condensing unit located in a well ventilated area and have an ample space, atleast a foot, from the rooftop flooring? Just make a check that free flowing outside air properly ventilates the condensing unit specially on high ambient temperatures. Hope this would solve your problem

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