Question about LG Electronic Window Air Conditioner

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I have a thru-wall unit that is draining out of the back and cooling just fine. My problem is the hole in which the ac goes thru. There seems to be some condensation on the bottom of the unit that drips down onto the board below(would be the window sill if I had taken it thru the window). I have thought about taking the unit out and placing a piece of insulating foam in the bottom of the unit or closing the 1/2 inch gap between the bottom of the unit and the board with insulation or expand-a-foam but not sure???

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You are correct the gap needs to be closed, i would suggest the double taped insulation they use on pick up truck when you put a topper on, as if you ever need to remove unit it would be easier then the expansion foam. Hope this helps Tim

Posted on Sep 04, 2010


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Where is drain pipe located on my air conditioner. Can't tell from the schematic. It is not draining and when cooling sounds like a jet airplane taking off. It is only 2 years old.

If it's a window or thru the wall unit. The drain hole is under the drip pan near the rear of the unit. If it's clogged it may be hard to find, as the clog can blend in with the drain hole. It's also a good idea to check the rear downward tilt of the unit. It should be 1/4" to 1/2'. This allows the water to flow freely to the drain hole.

If it's a portable unit. The drain plug will be on the back of the unit, just above floor level.

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Aug 26, 2011 | Heating & Cooling

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When i run the ac water ,from the front? Its a FAC106P1A the back hole is draining ok?

Glad to hear the drain hole is clear and functioning as it should. Now, all you need to do is adjust the downward tilt at the rear of the unit to 1/4" to 1/2". That way the water will flow to the back and drain, before it completely fills up and water blows out the front.

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I have a window model and lost my user guide. I was wondering where the water empties?

There's a drain pan under the unit. I has a drain hole on the outside (outside the wall) part of the AC. If the unit is installed properly and has a 1/4" to 1/2" downward tilt on the outside, the water runs to the rear of the drain pan and drains out thru the drain hole. That's assuming the drain hole is not clogged.

Jul 19, 2011 | Haier Heating & Cooling

1 Answer

Water coming out of front of unit, thru vents leaking on floor

Darlene, if this is a window or thru the wall unit, the leaking is usually caused by two things:

1. The drain pan under the unit has a drain hole (in the rear outside part of the unit) that is clogged.
2. The AC unit is not tilted down at the rear 1/4" to 1/2", so that water will drain to the outside drain hole.

Be prudent when you look for the drain hole in the drain pan. As the clog can blend in with the drain hole, making it difficult to see.

Hope this helped you troubleshoot and solve the problem.

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Look on the bottom back of the unit for the drain hole is probably clogged, use a piece of wire to unplug it.
Don't forget to rate this post!!

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There should be a drip tray that catches all the condensation and funnels it out the back. Check for holes, cracks or a plugged drain hole.

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Humidity is where the water comes from. If humidity is low, very little if any, water.

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Do not try to drill any holes but search for the built in drain and open it. Again do not use a drill. Get a shop vac.

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That has nothing to do with the water. Sounds to me like it needs cleanning, (the water is not drainning toward the back of the unit) ,,(dirty filter, which its trying to **** air anywhere it can even thru the drain hole, or not enough slope, leanning toward the back so gravity can flow the water to the back of the coil! Thank you-very-much!

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