Question about Dometic Rooftop RV Air Conditioner

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Brisk air, dometic rv a/c unit

My a/c runs good for about 1 minute than boggs down and quit cooling still runs than it repeats .it got very cold when it ran so i don't think low on freon.it ran good for 3 days than it started this problem

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  • Anonymous Sep 21, 2008

    I have the same problem and I went on the roof and took off the cover. I can heat the relay (it's mounted on top of the evaporator canister. Every time it cycles you can hear it click and it does so in time to the fan getting faster and slower. When the fan slows down (about 15 second cycles) if you place your fingers on the copper tubing you can feel it get cold until it speeds up again. My unit is NEW, and has less then 2 hours on it. Good thing I have two AC's this one is the rear unit and smaller of the two. When I have it repaired I would also like to put a heater element in it. What do you think about doing that to both of my AC units?? Can I fix my AC myself by cleaning or replacing this relay?? Thanks!!

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If your compressor has a relay for starting, the contacts may be stuck (welded) together which would cause both the starting and running motor windings to stay energized at the same time. This will cause the overload protector to cycle the compressor on then off after a short run. Replacing the relay would rectify this type of problem.

Posted on Jul 18, 2008

My air conditioner works great except it leaks condensation water on the inside of my camper. I had this problem before an it turned out to be a clogged hose.  Is it possible for me to repair it on my own. 

Posted on Jul 16, 2008

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Possible tired motor, or dying capasitor

Posted on Jun 25, 2008

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Dometic brisk 2 AC can it be operated on a 24 volt inverter.


If your inverter puts out enough power, sure. It may drain your batteries pretty fast, though. Check the power rating of your AC and compare it to the power output of the inverter. Add a safe margin for everything else you want to run at the same time.

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Why is my brisk air duo therm rv ac freezing up on the inside.


Where you see frost all the time, wait for unit to thaw and start cooling again and carefully slide hand up in that hole and see if you can feel cool air leaking in from divider that separates cool and return air, that will cause freeze-ups as well. Use foil tape if necessary to stop any cool air coming in to return air from around divider. Also, if you have any diffusers closed, (on ducted system in ceiling) or partially closed, open them all up full flow. If you restrict the cold air from coming out too much, it can also cause freeze up. One more thing, take cover off where cool air box is and double check that something isn't restricting the flow of cold in to the duct work if it has ducted system.

Jul 12, 2014 | Dometic Rooftop RV Air Conditioner

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My Duo-therm Brisk-Air by Dometic rv ac wont cool.(The fan runs )


Usually just listening closely will give you a rough idea where to look for problem. When you have the fan on and switch to cool, (with temperature turned down low obviously) do you hear any type of "moaning" sounds from AC unit, or see lights in RV dim slightly indicating that compressor is trying to engage? Is the breaker tripping when compressor tries to engage? Do you hear a "click" from AC unit when switched to cool? If none of that happens, then I'd start thinking thermostat, or compressor relay. Normally if it's a faulty capacitor, the compressor will try to engage but will make a "moaning sound" and usually trip the breaker due to excess current draw. Someone experience in electrical should be able to test relays etc, but whoever does work on it, should be aware that those capacitors, as well as hydro in general are very dangerous to work with. The ("zap",- Shock) that you can experience from a capacitor or hydro, can be fatal.

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My dometic duo therm brisk air RV a/c unit is not cooling the RV


I had the sam problem, took the thermostat cover off and tightend and refastend the wires, so far so god

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Quit blowing cold air


if a leak, should be repairable, a lot of techs these days find it easier and more profitable just to replace things. try a new tech

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Dou Therm Brisk Air not running


Turn the ac off go up top the coach and remove the cover. Look for fan blockage, Wasp, mud dauber etc. Caution if it is wasps they will chase you off the end of your coach. Take some spray with you. If there is no blockage the fan motor is toast.
Thanks for using Fixya
Jerry

Mar 27, 2009 | Dometic Rooftop RV Air Conditioner

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