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I have a LG wm3988hwa and it pumps cold water into the drum while drying. I have determined that it is not the 5way valve. Any ideas?

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  • nick243 Jun 04, 2009

    The solution for this problem was the 5-way cold water valve. That is all that was replaced and it works perfect now!



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I have not looked up your model number, but on LG combo washer/dryers, drying requires addition of some cold water in the vertical vent area to facilitate condensation (and thus moisture removal) from the dryer's air stream. This cold water should then pass under the drum without contacting the clothes. I'd check the pump inlet filter at the front left of the machine, and I'd remove the back of the machine and then the big rubber connector at the lower left side (as viewed from the back of the machine) and remove any lint which may be impeding water flow at that point.

Posted on May 24, 2009


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I got the company link from LG. If the link does not work, go the the main website and enter in the model number. appliancepartspro(.)com
p.s. I found a service manual for my unit when I removed (by unscrewing) the inside plastic piece of the pump filter. It was located to the right, in a plastic bag.
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Every morning there is 3"


THats a bit tricky determining which water valve it is...while the one way to be sure would be a process of elemenation the cold water valve is most likely going to be the one. A fairly easy way to determine which one is,is turn off just the hot water tap and cold water tap seperatly over the course of a couple days and see when either is off if it still has water in the drum...meaning if with the cold water faucet off does it still have water in the morning and vice versa for when hot faucet is off

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This usually indicates that the fill valve for the drying cycle is faulty. In short you need a new cold water valve assembly. (this will fix this issue 90% of the time) Otherwise you may need a new control board.

Inside of the machine (you will have to remove the top cover from the machine) is a valve assembly attached to the cold water line. This valve assembly consists of 2 or 3 individual valve bodies . The one on the right hand side of the assembly usually controls the cold water inlet for the drying cycle(this is necessary for proper condensation drying to take place). There is a black hose which attaches this part of the valve assembly to the wash drum. With the water shut off and the power removed from the machine, remove this hose from the valve and look to see if it has a small red (usually) plastic insert. This is a restricter insert which limits the water flow into the tub. Without the insert the tub will fill with cold water in a short amount of time.

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