Question about Dometic Rooftop RV Air Conditioner

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Collecting water on top of house boat from air conditioner

We have a Dometic Duo-Term air conditioner on top of out house boat. The condensation from the unit will drip and collect on top of the boat and then drip off the side. But I would like to know if there is any hose or drip pan that can be put under the unit or connected to the drip to distribute it to another area and drip from a hose. We had a small portion of the rolled roofing that had become so wet that we had to take it off and redo it. I do not want this to happen again so I am trying to find a solution to this problem. If anyone has any ideas that could help us please let me know.

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Thess units are designed to discharge the condensed water onto the roof under normal conditions. HOWEVER you should be able to have a sheet metal person make up a drain pan to fit under the unit.
You would ten need to add an additional gasket between the drain pan to roof and drain pan to A/C unit. The drain pan could have a hose connection attached to the drain pan. Try it, you might like it.
Also you may have to get longer screws to tighten down the A/C from below.

Posted on Jul 24, 2008

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We need the manual for this air conditioner. We have a lot of condensation coming from the internal unit after we switch it off from the cold setting.


there will always be condensation on the fins of the indoor unit as that is the purpose of it
The evaporator condenses the hot moisture of the air in the room as it hits the cold evaporator fins and that water is drained off by a hose to the outside of the house
One way to reduce the condensation to a minimum is to keep the fins clean of the greasy dust that collects as that way the water is running while it is operating and not collecting in the fins

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1 Answer

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All a/c units condense water out of the air and channel it out the back of the unit. Just tilt your unit slightly in towards the outside of the trailer-house so it does not drip on your bed.

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1 Answer

Where are the condensing water drains?on a Coleman RV rooftop air conditioner


The condenser drains for a roof unit drain on top of the rv. There are on hoses which divert the condensation to a location other than the roof. Are you trying to keep it from dripping down at the door?

Jun 28, 2014 | Dometic Rooftop RV Air Conditioner

1 Answer

Our Dometic Duo Therm Air Conditioner leaks inside our trailer.


Hi, hopefully it is just your drain stopped up. If you can climb up on the top of the trailer, on your air cond. unit will be a drain. It will be about 1" around and will be located close to the bottom of the unit. It may have a hose connected to it or it may just drain on the roof. When you find this, see if it is plugged up with dirt, etc. You can stick something up in it to unclog it, but be aware not to jab the coil tubing with what ever you are using. You may be able to use a shop vac or compressed air also.

If it is not stopped up, depending on the age of the unit, the condensate pan, (which hold the water) may be rusted through. You will have to take the top of the unit off and a couple of covers to get to the front coil (looks like a radiator). The pan is underneath the coil.

Hope this helps and I hope it is the easier of the two. Mark

Aug 06, 2011 | Dometic Rooftop RV Air Conditioner

1 Answer

Outside temp was 113, the compressor stoped fan stayed on.Only hot air. Latter in the day compressor and fan worked fine. Should I be concerned ? Thank Mike duo therm 13500 .no heater


Hi,
It just got so hot that the unit kicked out on high head pressure...
Check the outside condenser coil for dirt... wash it out with soap and water so that you can get maximum air flow through it...

Air Conditioning - Cleaning the Condenser Coil
heatman101

Sep 28, 2010 | Dometic Rooftop RV Air Conditioner

1 Answer

Duo Therm dripping water in camper when shut off. My Dometic Duo Therm Ducted AC drips quite a bit of water when shut off after running for several hours on hot humid days. The condensate lines are open....


Remove the filter at ceiling and run the AC on cool etc, and see if you can feel cool air leaking across to return air inlet where the divider between cold and return is. Check along all edges, etc for any cool air . Careful of wiring, but you should be able to get hand in there and feel especially around the edges where it should be sealed tight. Quite often a leak in that area causes cold air to enter return air and causes excessive condensation. Another thing to check is look way up inside opening for return air, with a flashlight and see if any dirt/dust on coils and fins of evaporator, and if so, needs to be cleaned off with a vacuum, and brush attachment. Let me know what you find.

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1 Answer

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If the blower never tries to come on, then that is why it is tripping the breaker. If the breaker is tripping while the entire unit is running, try cleaning the condenser coil. Go on top of the unit and remove the AC shroud. With a water hose, gently rinse the condenser coil out from the rear. Continue doing this until the water that flows is clear. This should help with the breaker problem, if it does not, then the fan motor is overheating and causing the amperage to go up. What size of breaker is the unit on? Does it trip mainly on hot days? If so then it is the fact that the condenser is dirty.

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1 Answer

Dometic air conditioner


1The air coditioner does run on Electric. 110V 2. No you do not have to unhook the battery 3. Yes you need to put water in the hot water heater so you do not burn the unit up.

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2 Answers

Dometic Rooftop RV Air conditioner


why is our dometic roof top a/c on our boat draining water back into boat. is there a way to clean the drain?

May 28, 2008 | Dometic Rooftop RV Air Conditioner

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