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Water is backing up and dripping out of wall unit. I've checked drainage pipe and its clear. water is not getting into drainage pipe in unit.

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The water dripping from evapourator is due to clogging of the cooling pins.where in the condensed water logs into the front portion into the filter,the front pannel and to the wall.If the unit is slightly tilted, this would be reduced.use a good brush and air pressure to clean the fins.If periodical cleaning of the filter is not done,this can happen.

Posted on Sep 02, 2010

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MLG LS307HV. Condensation is dripping off the bottom of the indoor unit. We've mounted the unit level but the left side continues to pull up. The wall mount is level but he unit is slightly out of...


the inside unit should be mounted with a slight tilt to the outside - so the water can drain outside.
also - be sure your drain hole (in the unit) is not plugged - either with dirt/debris.

Aug 04, 2011 | LG LS307HV Air Conditioner

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My ac unit is now after 3 weeks of use dripping water inwards(even with a 1/4" slope of the unit to the outside) is my drip pan overflowing?


Yes, your drip pan is overflowing, because the drain hole near the back of the unit is clogged. There are 2 ways to address this problem.

1. Look out side the house, under the unit and search carefully for the drain hole or drain tube. If it's a hole, clear it using something like a pipe leaner. It it's a tube, use 2 pipe cleaners twisted horizontally together and carefully run it up into the tubing in a push/pull motion. This will help dislodge any clogs.

2. If you're feeling really lucky, turn the unit OFF and unplug it. Straighten out a wire coat hanger leaving a little hook on one end. Remove the front cover of the AC unit and slide the coat hanger under all the mechanical parts into the drip pan. Sweep it around carefully in the drip pan. all the way to the back of the unit. Be careful not to get the little hooked end caught on anything, by keeping it flat against the drip pan. Doing this, may dislodge any clogs.

And finally, if you're in a high humidity area, increasing the tilt to 1/2" may help improve the drainage.

Hope this helps you unclog the problem.

Jul 20, 2011 | Heating & Cooling

1 Answer

Water is dripping from the inside unit and not coming out of the drainage pipe outside


The reason the water is coming out of the unit and not the drainage pipe outside is for a few possible reasons.
1 -the drain pipe is clogged / plugged (due to calcium build up,or frozen)
2- the line is kinked or blocked.
check the drain pipe carefully, there may be obstuctions.

Feb 21, 2011 | Heating & Cooling

1 Answer

Dripping inside! The unit is also dripping outside (as I guess it should) but now has started dripping inside after about a half hour's use. The angle of the unit has not changed. Could there be a clog...


The base of the unit is like a tray which collects all the condensation water. At the back of the unit (the part that normally sticks out the wall/window) there is a small tube where the water comes out. It is possible that this hole is blocked up with dust that the unit has drawn in and once it gets wet will block the water run off tube or pipe that can be fitted to it. If this tube is not cleared the tray will fill up and over flow everywhere. Hope this helps you.

Aug 02, 2010 | Friedrich QuietMaster KS15L10...

1 Answer

I have a Weather King AC/Furnace in the attic that's dripping water into the drain pan. When we purchased our new house it came with this unit and it never dripped ater. Now, the water is dripping towards...


I assume it is dripping water when the AC is running. If you look at the attic unit, there should be a PVC pipe running from the unit - probably an insulated PVC pipe. This pipe probably goes across the attic to the edge of the house and drains outside. The drain pan may also have a drain pipe, but the one on the AC unit is the issue, and is probably plugged. Go outside and see if you can locate the AC drain pipe. See if the ground is wet below the pipe and if water is steadily dripping from the pipe (with AC running). If the pipe and ground are dry, the pipe is plugged. If you have a wet/dry vac, try connecting it to the drain pipe outside to see if you can **** the pluggage out. If you can get it clear, water should start dripping out of the pipe. This same thing happened at our house. I decided to cut the pipe in the attic, and add in a PVC isolation valve, tee, and water hose connection with plug, so I can valve out the AC unit from the pipe, remove hose connection plug, and hook up a water hose and flush the line to outside. Lowe's sells all of the PVC pipe fittings. The water pressure from the hose will always flush out the algae and crud to the outside of the house. I can also remove the plug and pour a cup of bleach down the drain pipe every couple of months to keep algae growth in check. I also cut out the trap (u-leg) from pipe in the attic and purchased a ready made trap a Lowes (the contractor who built our house had made a lousy homemade trap). I purchased a few PVC elbows and installed the trap on the drain pipe outside. By the way, our AC drain pipe comes out of our wall outside and drains near our outside unit. Our secondary drain pan drain pipe comes out outside from an eave on the side of the house. I don't know what you drain line looks like (it may have a port to add bleach, or some cleanout provisions, maybe not). If you choose to modify/improve it, then make a sketch of it, go to Lowe's and get the PVC parts you need + PVC pipe primer and cement. PVC cement dries fast. Remember, the pipe must flow downhill from you AC attic unit. You can use a regular wood saw to cut the pipe. I hope this helps you. You need to keep the drain line clear as algae will continue to grow in it. Pouring bleach in the line every month or two helps. You also need to check maybe once a month that the line is draining properly (check to see if dripping outside). You can get some serious water damage to your ceilings if the water backs up and overflows. I discovered that our drain line was plugged just in time as our drain pan drain line was also partially plugged and drain pan was about to overflow.

May 08, 2010 | Weather King 12AJA4201AH Air Conditioner

1 Answer

Water coming from indoor unit


The problem is caused by fine particulants such as dust, pet dander, etc. which mix with the collected condinsation water and forms a grey gel eventually clogging up the drainage pipe. The solution is to attach a wet vaccuum hose to the discharge end of the drainage pipe and vaccuum out the gel. It is advisable to flush the system by adding water to the a/c's drain pan while the vaccuum is still running.

Oct 07, 2009 | Mitsubishi Heating & Cooling

1 Answer

We have a air force through the wall conditioning unit and it drips water from inside the rt side even thou the drainage tube is fitted


Sometimes the drainage tube will get clogged..

The drainage tube on the inside should be clear so you can see if its clogged & not flowing..

Is the water flowing to the end point of the drainage ?

They should be cleaned out once a year by using a shop vac from the outside.. The after that - disconceting and running bleach water through it from the inside.. This avoids cloggs that will definately happen..

Hope this helps !!
Please rate me good ;o)

Jul 11, 2009 | Heating & Cooling

1 Answer

Freezer leaking on Kitchen Floor


the pipe which is located at the back of the fridge/ freezer may be blocked or hanging outside of the designated collection chamber designed for this purpose. Unplug from the mains and pull the appliance away from the wall so you can see and get to the back of it. At the back of it you will see a pipe coming out from the bottom of the cooling fins and will go down and the end of it will be sitting inside a shallow plastic collection unit - not covered but open. Itusually is sitting on top of the condenser unit. (this is a large sealed metal structure whic has pipes coming out of it and is the largest item in that area at the back bottom end of appliance). If there is some liquid in it then either move the pipe end into the dry area or emty it out. Sometimes there isnt a collection chamber but the pipe just drips onto the condenser and evaporates - usually on self defrosting certain brand named products but dont know much about that. Use a pipe cleaner to clear out the pipes from inside the fridge out toward the back using that pipe. the drainage hole is inside the fridge at the back and may have some sort of cover or plug in it. remove that and clean it and use the wire or pipe cleaner to shove doen the hold and clear the entrance and exit. Test pipe functionability by pouring a small ammount of water down the drain hole and see it coming out of the back via pipe. If still leaking make sure the vent areas in the back of fridge and freezr are not covered expecially in the self defrosting models. basically dont overload the fridge or freezer coz this causes blocked vents, difficulty derfosting on self defrosters, water builds up and gets out via the tube as it should, but more water than can be evaporated will cause puddles on the floor

Jul 03, 2009 | Zanussi ZX99 / 5 Bottom Freezer...

1 Answer

Water is leaking out of the bottom of the interior of our Contour Refrigerator.(HE430TF) It does not appear to be flowing into the defrost overflow tray. I have poked a piece of fexible plastic up the pipe...


Hi Richard,
I don't have any knowledge of your particular model but on mine the water condenses on the cold plate in the fridge compartment and then drips down into a little channel. From there it goes down through a fairly small tube which opens onto a little dish formed on the top of the compressor unit. This unit is warm when running, and the water is supposed to evaporate away into the room.
If water is collecting on the floor of the fridge compartment it is almost certainly due to a blocked drain pipe. If the drainage channel has become cracked this might be another cause of your problem.

One way to check that the drainage pipe is clear is to blow up it (not blow it up !) but that is a pretty yucky job. Alternatively you could pour a little hot water with dishwashing detergent dissolved in it into the drainage channel and check that it comes out onto the compressor top.

I hope this helps, but if not please defer a rating until we have had another think about it. Cheers, D.

Jul 09, 2008 | Hoover Refrigerators

1 Answer

LG LST243C-2


- Check your air filter at the indoor if clean.
- Check your evaporator fins if clean.
- Check if no icing in your evaporator and outdoor pipes.
- If your air filter and evaporator fins is clean and icing is present then your unit is under charge.
- When your indoor drips check your drain pipe if there are water comes out. If no water drain from your drain pipes then your drainage is restricted.
- Flush your drainage with water using your garden hose to flush out dirts from your drainage.
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Jan 14, 2008 | LG LSC121PMA Split System Air Conditioner

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