Question about Dometic Rooftop RV Air Conditioner

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Water is setting in the air box and coming out onto counter.

Why won't it drain to the outside instead of the inside, it also blows the water out of the air vents, what is the problem?

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John Stewart

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  • Contributor
  • 28 Answers

Find the drain line and blow out from either top or bottom, spiders love to web in them

Posted on Feb 12, 2015

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5 Related Answers

Anonymous

  • 80 Answers

SOURCE: no air is coming through air ducts

the cover has a filter incorporated, clean the filter and see if it works. it might be so dirty it looks like a black sheet. the dirt is normal, if is filtered from the air we breathe and usually comes from car exhaust gases etc

Posted on May 16, 2009

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farfield

Farley Redfield

  • 462 Answers

SOURCE: My dometic RV rooftop air conditioner is leaking

Remove all covers and look down with them removed and see if the coil drain pan has a stopped up exit where the water drains out and into the rear of the AC unit.

If the unit is off level it could cause a draining problem too.

Posted on Jul 10, 2009

Thomas Stewart

  • 582 Answers

SOURCE: Central Air- Breaker flips when AC is turned on

IT SOUNDS LIKE YOU HAVE A BAD COMPRESSOR OR A DEAD SHORT SOME WHERE IN THE UNIT

Posted on Sep 01, 2009

Anonymous

  • 1 Answer

SOURCE: blowing warm air inside,blowing cool air outside

The odds are you are low on refrigerant charge and the compressor is going out in over load.

Posted on Sep 15, 2009

J Lorensen

  • 387 Answers

SOURCE: 15,000 BTU. (P/N 459516.701)

This appears to be a low charge. you should see a 15-20 degree split between the discharge venting and the return air venting.

Posted on Jul 14, 2011

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1 Answer

What is the minimum vertical vent distant from top of water heater to top of cap. Water heater is stand alone outside furnishing water for military force provider showers unit.


Generally 40 feet for ordinary atmospheric-vented household water heater...
Straight run to roof.
Atmospheric means no power vent... just hot air drafting upwards
Google search: gas vent height code

Atmospheric venting code depends on 4 basic factors:
Diameter of vent--- bigger vent, more draft
How many water heaters are connected to same vent
BTU per hour rating of water heater-- the more gas that is burned per hour, the bigger the vent needs to be
How straight the pipe is -- are there any horizontal or lateral runs
http://www.ameri-vent.com/files/assets/files/1366372183_Sizing26ApplicationGuide1.pdf

http://waterheatertimer.org/pdf/Bosch_Checking_the_draft.pdf
http://waterheatertimer.org/pdf/checking-the-draft2.pdf

Other factors can include
-wind conditions... higher wind across top of vent pipe on roof can reduce draft, and cause downdraft that blows deadly CO into same room as water heater
-vent termination near high walls, trees, high roof peak etc will reduce draft or cause downdraft
-amount of incoming air supply... if water heater is inside a closed room, then there is no air to draft up the pipe, burner will shut down or burn lazy yellow instead of clear blue
-stuff piled up around water heater that obstructs air intake
-dirty air intake screen that reduces air intake
-vent fans inside same room as water heater that pull air down the vent and cause reduction in water heater draft
-generally elbows reduce draft by 10%
-vent cannot terminate near any window door or air intake for another gas appliance
-bird build nest on top of vent pipe after vent termination falls off
-highly acidic gas by-product causes large amount of condensation inside pipe that burns hole in pipe or drips down and damages combustion parts...blower and inline condensate trap and drain might be required
-multiple water heaters installed on same vent line.

Gene
Water Heater Timers Save Money

If you need further help, I’m available over the phone at https://www.6ya.com/expert/gene_9f0ef4df2f9897e7

Mar 27, 2015 | Water Water Heaters

1 Answer

Ac unit isn't blowing


It sounds like your freezing up at the coil, which in turn, blocks airflow across coil and only a small amount of air comes out of the vents. This also explains the cold air coming from fan on the outside unit, since the system cannot absorb the heat from the inside of the house through the coil. Your air outside is usually blowing out warm to hot air because thats the heat it rejects out of your system. I would turn the thermostat to "OFF" and turn just the fan setting to "ON" instead of Auto, this thaws the system out faster. Give it time to fully thaw, make sure filters are clean, and check airflow. If airflow is back to normal, your problem is more than likely the charge of refrigerant. If you have to call a technician out, make sure the unit is not frozen at all before they get there, they would not be able to do anything with the system froze. Hope this helps and good luck!

Jun 18, 2012 | Heating & Cooling

1 Answer

My commercial cool cpn12xh9-e heater does not work. It doesn't blow warm/hot air. What do I do?


If your unit is the one that has a heater option too, then the problem is that it needs to be drained. For whatever reason, when using the heater option, it creates condensation and will shut the heating element of in til you drain the water out of the small port on the bottom in the back. See picture. Once the water is drained, it will throw heat again. But it won’t be long before you have to drain it again. Your best bet is to raise it up enough to put a drain pan under the drain. Ease of simplicity. You’ll be doing it a lot when heating a room with it.
7_12_2018_11_26_32_pm.jpg

Jan 14, 2012 | Haier CPN12XH9 Portable Air Conditioner

1 Answer

The air conditioner is blowing hot air, there is no water to drain


if it is also blowing cold air out of the other vents you need to vent the hot air its blowing outside

Sep 30, 2010 | NewAir ACP-1000E Portable Air Conditioner

2 Answers

There is moisture coming out of the AC vents on my daughters 2006 s40, usually during very hot weather and not until the car has been driven for several miles


The drain on the evaporator is stopped up,look for it directly bellow the ac lines ,where they go into the car,under the hood,it will be on the bottom of the blower box,use air pressure to blow into the drain to clear it out.

Aug 24, 2010 | 2006 Volvo S40

1 Answer

Carpet wet under window air con.


The air conditioner needs to be "tilted" or "pitched" to the rear. By this I mean the back (outside) should be slightly lower than the front (inside). This will allow the water to run toward the back of the unit, and drip on the ground instead of inside the house - on the floor. The A/C unit must not be level or tilted into the room (front even with or lower than the rear).

This water is the result of condensation that is created when the warm room air is drawn through the much cooler coil & fins inside the unit and is completely normal. The more humid the air inside is, the more condensation will form, and drain away.

Good luck!

Jul 15, 2010 | Maytag M7X05F2B Air Conditioner

1 Answer

My Whirlpool Super Duty Imperial drier won't produce heat. I made sure the outside vent was unclogged; it is blowing cold air.


When a dryer doesn't heat, either the heating element is bad, or the flap inside the venting of the dryer is opened allowing air to bypass the dryer instead of blowing the air into the dryer.

Jun 24, 2010 | Dryers

2 Answers

Blowing water out the vents.


There is a water pipe from AC to outside,
if a lot of gel inside the pipe, it can make water flow become jam.
Clean it by blow the pipe with a compressor from outside.
Sometimes I did it with my mouth. LOL......
But its worked finally.

Sep 06, 2009 | Goldstar LG LW1804ER Window Air...

1 Answer

It seems it's collecting water in the tray and blowing it out through the top vent, dripping from the bottom inside the house and is making a sound constantly like the fan is hitting water as it blows.


AC units do take the humidity out of the air and water collects in the bottom. The unit should be tilted slightly downward on the outside so that the water runs outrside. Make sure the drain holes are clear. The pinging noise is common, the fan is hitting drops of water, nothing to be concerned about

Aug 19, 2009 | LG Electronic Window Air Conditioner

1 Answer

Humidity


An air conditioner of this type always has standing water sitting in the base-tray of the machine as it's running. They're designed to work that way. However, if the unit leans slightly in toward the inside of your house, then the water in the tray can be deeper than it should and/or add extra humidity to the inside air. These units are designed to be installed so that they lean slightly to the _outside_ of the window or wall-hole where they are mounted. This way the standing water drains off to the ground outside and isn't so deep on the inside of the unit that it adds too much humidity to the inside air. Check the mounting of this unit to make sure it leans slightly toward the outside. Also verify that any notch or drain hole on the outside end of the unit, intended to guide draining water, is not clogged with debris (which could also cause the standing water in the unit to be at too high a level). Also verify that the "vent" is closed, if this unit is equipped with said vent opening. An open vent panel can allow humid outside air inside as the unit is running. Hope this helps! ;)

Jul 31, 2007 | Emerson Quiet Kool 6GC53 Air Conditioner

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