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DIYinMinnesota

WM3987 LG Washer/Dryer Combo Won't Turn On

8 posts in this topic

Hi -

 

Our "new" (used) washer/dryer combo is only being used for the dryer right now before the bathroom remodel is complete. Just the other day, it didn't finish the dry cycle and when I turned it on it had a pF code (power failure, I found out). It restarted after I turned it off and on and all was fine. Now it won't turn on at all. I investigated a little bit and found a warped piece of plastic in the "Electrical Noise Filter"...looks like somehow it got too hot. 

 

Thinking this was the problem, I searched for testing the noise filter and I found this website and the blog post below and checked the way he said to check. This led me to the main board being the problem.

 

I checked that though, in the same way, and that shows 120V as well. Is there another way to check??? What else could be wrong?

 

http://appliantology.org/blog/1/entry-704-how-to-troubleshoot-an-lg-front-load-washer-with-no-display-or-power/ 

 

Thanks.

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Need appliance parts? Call 877-803-7957 now!

Anyone? This is our best day to try to figure this out.

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<<<I investigated a little bit and found a warped piece of plastic in the "Electrical Noise Filter"...looks like somehow it got too hot.>>>

 

**********

 

Not an indication of failure.

 

Combo washer/dryer units generate a lot of internal heat (inside the unit itself)---which can deform the plastic on the Noise Filter---but otherwise cause no problems.

 

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<<<I searched for testing the noise filter>>>

 

<<<and that shows 120V>>>

 

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If the Main Board red LED light is not on/lit---faulty Main Board (EBR38163341)

 

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<<<Our "new" (used) washer/dryer combo is only being used for the dryer right now before the bathroom remodel is complete.>>>

 

**********

 

Just a reminder...

 

Verify that power outlet---is *not* a GFCI

 

Combo units will *always* trip a GFCI.

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You are so helpful! A couple things...

The LED light, where exactly is that? Do we need to take the power board out to see it?

The machine has worked on the GFCI - could it be a problem all of a sudden? It doesn't trip the outlet.

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<<<The LED light, where exactly is that?>>>

 

**********

 

On the Main Board (can't miss it--if it's on).

 

The plastic cover can be removed from the Main Board---to better locate/see that LED

 

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<<<The machine has worked on the GFCI - could it be a problem all of a sudden? It doesn't trip the outlet.>>>

 

**********

 

Yes---tripped GFCI is a common nuisance issue.

Sometimes the GFCI in another room will "trip"---rather than the one that the combo is plugged into.
 

Edited by john63

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You can see an example of the illustrious LED on one of these boards in this video for an LG top loader-- different type of washer but the segment for the LED on the main PCB would still apply to your washer:

 

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Thank you again! I got the cover off and found the LED. It is definitely not lit so I guess I'm going with replacing the part.

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