Question about Coleman Mach III Air Conditioner

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Coleman air conditioner is leaking water from the unit down to the floor. Is there supposed to be some kind of drain on the unit or some thing to keep the water from falling on the floor. We have cleaned the unit and installed new filters but still leaks.

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Posted on Jan 02, 2017

22yooper
  • 828 Answers

SOURCE: rv air conditioner leaking

In each of these cases I would check for proper connection of the return air vent to the A/C from below. Static pressure from insufficient return air could cause negative pressure to hold back on condensate drainage. when the unit is shut off the pressure becomes equal allowing water to drain. Also check air filter and clean if found necessary.

Posted on Jul 18, 2008

  • 82 Answers

SOURCE: coleman tsr rv air conditioner leaks into rv when running

It probably has a clogged condensate drain. Take off the cover on top the RV and check hoses or tubes leaving unit for debris or lint. Often this water is used to help cool the condenser so look for leaves pine needles etc in the pan. There may be a cover you can remove on the evaporator section that will allow you to clean the collection pan and hose or trough. Is it possible the RV is far enough out of level that the condensate can't "run uphill"? Always power off while working on this unit unless you are electric savvy. Good luck!

Posted on Jun 28, 2009

  • 3 Answers

SOURCE: DeLonghi A120 12,000 btu ar conditioner Leaks

OK. This fixed my A120LE from leaking. First unplug the machine for safety. If you are looking at the back of the unit you need to take off the right side panel. I took off the all the panels but you could just take off the right side.
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There is a reservoir on the top that collects condensation from the top coil. (shown in the circle) The drain hole on mine was clogged. If you stick a small screwdriver or paperclip in the hole to push the debris through it should start working properly again. I did this to mine yesterday and it hasn't leaked since!! Drain hole is shown here in close up picture. Unclogging this will allow the condensation to flow down to the main reservoir on the bottom where it will be evaporated in the AC exhaust.

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Good luck!

Posted on Jul 26, 2010

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1 Answer

I dont know where the reservoir is in my air conditioner, is there a hose to hook up to drain the water becuase now it is leaking on my floor


On the Air-To Air Model, the majority of the moisture is supposed to exhausted out the exhaust hose and out the window. However, if it is extremely humid, the water collection tank will capture what is not exhausted. There is no hose, To drain it, there is a removable drain plug on the back of the unit, down near the floor level. You can either drain it in a low sided pan, that is capable of holding at least 1 quart of water. Or you can disconnect the unit and roll it to a floor drain (if you have one) or out doors to drain the water.

I hope this helped you and thanks for choosing FixYa.

Aug 17, 2011 | DeLonghi Air-To-Air Portable Air...

1 Answer

My portoable ac is leaking on the floor . am i suppose to have a hose connected to the drain on the bottom in the back of the unit. please explain how i am suppose to drain my machine


a hose is only used for continued drainage in to a floor drain or sump. With out he hose, it's supposed to have a screw in plug to keep the water from flowing onto the floor. Then you would drain it into a low sided container that can hold at least 1 quart of water. Normally, the unit should warn you when it needs draining.

Hope this helped you.

Jul 02, 2011 | Amcor Heating & Cooling

1 Answer

The air conditioner is cooling but it is dripping water on the floor, lots of it, I mopped up more than a gallon for less than 24 hours use.


It sounds as if the drain plug on the back of the unit, down near floor level is loose or missing
Check for that first, because the unit is supposed to shut off automatically, when the drain pan is full. If the plug is leaking or missing, the unit doesn't sense, that the drain pan is full. Also, be sure you exhaust ducts are not bowing down a great deal or trapping exhausted moisture in the duct, that should be exhausted out the window.

Hope this helped you to troubleshoot and solve the problem.

Jun 20, 2011 | DeLonghi PAC C120 Portable Air Conditioner

1 Answer

Leaking water


mcdevito75 here, The portion of the a/c unit that goes outside the window is the evaporator and suppose to leak water, check the drain hole in the unit floor on the outside portion of the unit, reach this drain hole thru another window or have your local a/c repair shop look at it, they come to the house.

Jun 21, 2010 | Samsung AW0893L Air Conditioner

1 Answer

My roof airconditioner leaks drain water on the floor.


make sure the drain is not plugged and that condensation can get under the cooling coil to the drain pan otherwise it may be condensation forming on the grill, make sure the filters and coil are clean and you are moving lots of air.

Jun 02, 2010 | Coleman Mach 15 Air Conditioner

1 Answer

My air-conditioner is leaking a lot of water onto the floor.


You may jst have a stopped up draon or drain pan. If you can get to thesmall whole that it drain out of. **** it out with a shop vac. If you have one. Russ

Jul 26, 2009 | Pelonis KCD-25YI Air Conditioner

1 Answer

Appears to be condensation leaking from the Carrier roof A/C in 2009 Pleasure Way Plateau RV. Leaks on back bed and floor. Thanks, Richard


there should be a pan under the evaporator coil in the roof mounted unit, the pan should have a hose on it to remove the water to a non objectionable place, you need to locate the drain and pressure it up to clear it, I would also remove the top covaer and check the cleanliness of the coil drain pan itself

Jul 18, 2009 | Coleman Mach 15 Air Conditioner

4 Answers

Goldstar Air conditioner


Tilt the unit toward the window opening and clear the drain holes in the back and bottom of the unit from debris.

Jun 09, 2008 | Goodman CKL36AR36 Air Conditioner

1 Answer

Coleman RV air conditioner


It is not leaking. that is the condendensation it is pulling out of the air. It is suppose to leak on the roof and off the camper.

Oct 06, 2007 | Dometic Rooftop RV Air Conditioner

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