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Lg Washermodel #WM0642HW

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Why won't my LG washer drain?

I have an LG washer model number WM2455H. It won't drain. I have drained it using the hose at the bottom and the drum. The drain line is NOT kinked. Do I have to take the back off of the washer?

Posted January 27, 2010


Lyle W , January 28, 2010

You indicated that you drained the washer using the hose. I understand this to mean that you used the hose beside the pump filter as shown in the image below. You did not indicate that you pulled the pump filter to check for a clog or restriction. If you did not pull the filter out then I recommend that you follow the steps shown below to pull the pump filter out and check for a clog or restriction in this area. Since the tub drained using the hose beside this filter then it is likely that a clog or restriction in the pump filter is causing your drain problem. If you find no problems in this filter then you could have an undetected clog in the drain hose or you could have failed/clogged drain pump. If the pump is not running in the drain mode then you could have a failed control board or a wiring failure.

If you do not find a clog in the pump filter and need additional access to the pump and drain hose, you would need to remove the front panel as shown in the second image below. Be sure that you unplug the washer to disconnect electrical power before accessing internal components. Removing the front panel will provide you with access the pump and drain hose so that you can check further for a clog or restriction in the drain line. If the pump is not running, you can check the wiring connections on the pump and the control board using the information provided in the second image. I traced the voltage supply to the pump through the brown and black wires. The image of the control board shows a voltage check that a technician would make on the control board to determine whether proper voltage is being supplied to the pump circuit. I do not recommend that you take this live voltage measurement yourself. You can check the continuity of the circuit through the brown and black wires of the pump circuit. You should measure between 10 and 20 ohms of resistance through this circuit (you should measure this resistance with the washer still unplugged). This is a safer test than measuring live voltage. If the circuit is okay but the pump is not running then the control board would need to be replaced.

You can order parts from the Sears PartsDirect website if necessary. If you intend to remove the front panel of the washer I recommend that you order the special pliers (part number 383EER4001A) to remove the spring clamp on the door boot. The door boot is difficult to remove without this tool.

These tips should help you resolve this drain problem in your LG washer. If you need more help, resubmit your question with additional details.

If you do not feel confident repairing this problem yourself, then you can have it repaired at your home by a Sears technician. Here is a link for the website: Sears Home Services .

Don, March 13, 2011

I have the same problem on my LG Tromm WM2477HW. The water won't drain out of it. I removed the strainer and cleaned it out. Next I removed the pump using the instructions that Lyle posted above. There was a bit of algae inside the pump inlet and the small rubber drain hose used to manually drain the washer was completely plugged. I got the drain hose unblocked by blowing compressed air through it. I took the motor off the pump and examined inside the pump - nothing unusual there. The pump impeller is not seized. Next, I cleaned out the pump with hot water and an old toothbrush. Then, I bench tested the pump with 110VAC. It ran fine. Then I blew through the pump drain hose with compressed air - air come out the othe end of the hose, so the drain hose does not appear to be blocked. After all of this, I put the washer back together and ran a quick 18 minute rinse cycle. Water caomes in, the drum spins, but when it is time to pump the water back out at 13 seconds, the machine just sits there. The timer stayss at 13 secs and the light on the front flashes SPIN,but the drum is stationary - it just appears to sit there doing nothing. Is there some way for me to check if the pump is getting power? What is the next step to troubleshoot this? Thanks in advance. Lyle, your instructiions were extremely helpful. I cobbled up a tool out of an old pair of brake spring pliers to remove the gasket spring. That would be a difficult job to do without a special tool.

Don, March 14, 2011

That should have read 13 "minutes" in the above post.... Took the pump off today and measured 13 ohms across the windings - the service manual says that it must be between 10-20 ohms, so the pump is OK. Tested the machine in "QC mode" and determined that the pump was getting 120VAC during the spin cycle. Turns out it was a loose connection at the pump motor. All is well now. The machine is draining again. I am running some smellywasher through it tonight to get rid of all of the algae. Thanks Lyle for posting the service manual - that was a huge help. I also found a link to a more recent WM2277 manual online at the link below. The QC Test Mode is really helpful to figure out what is going on. https://docs.google.com/fileview?id=0B5If-wTgYWH5MzYzYzAzNGQtMmNiNy00ZmFiLWI5NGQtODg0YTgzYTU5MzJk&hl=en

Lyle W , February 15, 2012

Thanks for posting that additional information Don.

Tristan, March 01, 2012

Hi Lyle. Add me to the clogged drain hose list. My filter is clear but my drain hose is completely clogged. I tried using a wire to unclog it but it's packed in tightly. Will I have to remove the front of the machine and replace the drain hose? Thanks, Tristan

Lyle W , March 02, 2012

Hello Tristan. Thanks for the information on the clogged drain hose. That will help. If it that small drain hose on the side of the pump that is clogged, then that is not a failure that will significantly affect the normal operation of the washer. If your washer is draining okay and you don't mind catching some water that spills out of that pump filter area when you open it up, then you don't necessarily need to remove that front panel and bother with unclogging that small drain hose. If the large hose between the tub and the pump or the discharge hose between the pump and the house drain behind the washer is clogged, then you may need to open up that cabinet. Reply with additional details if you need more help with this repair.

Tristan, March 02, 2012

Thanks for the reply. I'm getting a lot of water leaking during the wash cycle so evidently my brilliant "clogged drain hose" theory needs an overhaul. Last night I tried a rinse/spin and as soon as the tub started to fill, water started leaking out. Would a clogged pump do that?

Lyle W , March 02, 2012

There is a possibility that a leak in the drain pump or drain system could cause the leak that you are describing. A leak in the water supply or fill system could also cause that leak. Check the fill lines and fill hoses on the back of the washer. Make sure that those are not leaking. You can UNPLUG the washer and pull off the top panel. Carefully start a cycle with that top panel removed to see if you can determine the cause of the leak with that top panel removed. You may be able to determine the cause of the leak in that manner. If the leak is caused by a drain system component, then you probably won't be able to see the leak by just removing that top panel. You may have to UNPLUG the washer and remove that front panel to find the leak. With that front panel removed, you can manually fill the tub with some water to see if you can the source of the leak. If you need more help, let us know.

Tristan, March 02, 2012

Excellent ideas, Lyle. I had the top off yesterday and all the connections look solid. I like the idea of starting a fill cycle while looking in from the top. OtherwiseI'll unplug the machine, take the front off and fill the tub. Thanks!

Tristan, March 02, 2012

Hi Lyle, I have the machine apart. The leak was coming from the area where the drain hose ties into the back box in the lower left front. However, when I put water in the tub (about 2 gallons) nothing leaks.... any suggestions? Also, it looks like the black drain hose should pull out from the back of that black box but when I try it doesn't budge. I don't want to break it, but should it come off with enough force? If I can remove it I can clean it out. Thanks, Tristan

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