LG TROMM WM2077CW LE Error code problem

[tomD]

Hi,

LE error code displays after water fill is complete. Drum never spins despite being lose and free.

I have also done the following..

- unplugged for all periods of time, spun drum manually and received beep, plugged back in with no improvement.

-verified usage of HE detergent and no suds.

-replaced Hall Sensor 

-QC tested everything - no drum movement at any point. QC test 1, 2 and 3 seem to only trigger activation of the water pump. 

-inspected all wires and disconnected and reconnected each harness and control board connection.

- tested hall sensor harness and confirm resistance to stator

I did find a questionable capacitor (I think) on the control board they may have went bad. See pic. Do you know what this is called and if the problem, can it be repaired/replaced?

A new control board seems to be out of the question due to no longer being available. Part# 6871ER1052F.

control board (original) manufacturer date was 04.06.2005.

 

suggestions?

 

thank you! 

TomD

 

 

 

[tomD]

Link to photo.

https://drive.google.com/open?id=0B6YpSmnGl2wRWm9DZ0l4QzM4WEE

thanks

[john63]

Water entered the tub---then an "LE" error was displayed?

Has the Motor Wire Harness been replaced?

[john63]

Part number: 6877ER1016B

 

 

Edited August 2, 2016 by Samurai Appliance Repair Man
embedded part link

[tomD]

No, the water fills normally, it's when the drum is supposed to begin spinning that the LE error appears. 

I tested the wiring harness and it tested just fine. 

Mare you familiar with the component on the control board in the pic?

https://drive.google.com/open?id=0B6YpSmnGl2wRWm9DZ0l4QzM4WEE

[john63]

1 hour ago, tomD said:

No, the water fills normally, it's when the drum is supposed to begin spinning that the LE error appears. 

I tested the wiring harness and it tested just fine. 

Mare you familiar with the component on the control board in the pic?

https://drive.google.com/open?id=0B6YpSmnGl2wRWm9DZ0l4QzM4WEE

If the Main Board had failed---an "LE" error will be displayed immediately.

The photo image is not the best--I assume you're concerned about the "cooked appearance" of the step-down transformer (normal).

The Motor Wire Harness should be replaced every 5 years---and is very difficult to test with an ohmmeter.

You can ask for a helper to bend/flex the Wire Harness---while testing it (pointless anyway---it's over 5 years old and inexpensive).

The Wire Harness typically fails under a load (tests good with a meter but fails when in use).

The other possibility (and this is very rare) is a failed Stator.  Not likely.

[tomD]

Great info! I will order a new harness and update you on the status.

 

thank you!

[john63]

You're welcome:)

[tomD]

New harness installed. LE nightmare continues.

[tomD]

Here's a pic of new harness installed.

https://drive.google.com/open?id=0B6YpSmnGl2wRRnRBXzRJbHJkaFU

[tomD]

Here is a pic of the control panel

https://drive.google.com/open?id=0B6YpSmnGl2wRSFNFc1FMQnFTejQ

[john63]

Install looks good.

Hang in there for a few hours...on the job at the moment.

Will give test steps tonight....

[tomD]

I'll be here! Thank you!

[john63]

Okay---let's start with the full Model and Serial Numbers (some models end with /01 or /02 etc)

Unplug washer.

The Motor Wire Harness that was just replaced---has 2 connectors that attach to the Stator (motor) and 2 plugs that are connected at the base of the washer (wrapped in protective plastic)

Unwrap the plastic cover and disconnect the BLUE plug at the base of the washer.

To test the ohms of the motor...

Use a test meter and check the following on the BLUE plug...

Red and Blue wires

Red and Yellow wires

Blue and Yellow wires

All ohms values should be between 5 to 15 ohms.

 

[tomD]

hi John,

i had done that prior to replacing harness and all was good. Today I followed the harness back to the circuit board and through to the noise filter. Plugged back in and tested volts back to the board and didn't get any current. From the noise filter to the board I had full a current reading. I believe that yellow transformer is the culprit.

thoughts?

[john63]

What is the full Model number and Serial?

[john63]

If the Control Panel is illuminated---the transformer is "good".

 

[tomD]

Model# WM2077CW

SERIAL# 504kw 03977

[john63]

Built April 2005

Unplug washer

Set test meter to DC voltage test mode

Place test meter leads into the plug at the RED and BLUE wires

Do not hold or touch the test leads or plug

Plug in washer

Press and hold the SPIN SPEED and SOIL LEVEL buttons

Press the POWER button and release all three buttons

Wait until the door locks (single click sound)

Press the START button once

Is there voltage showing on the test meter? Should be about 127 VDC

If no voltage---Main Board has failed (failed relay).

There's a problem with the part number on your first post---it is not a valid number.

For the WM2077CW washer---two Main Boards were used

The original (does NOT have an option known as TUB CLEAN CYCLE)---is p/n: 6871ER1003F

Later built models---with the Tub Clean feature---will be p/n: EBR32816703

Check your Main Board (remove it from the washer if needed) on both sides for a valid part number and post it.

According to LGs website---your model is listed as using the 6871ER1003F

Both Main Boards are NLA.

As it happens--I have been doing LG warranty (and out of warranty) service for a number of years

We also sell rebuilt LG appliances---so our inventory is fairly extensive

I have several *used* (verified good) 6871ER1003F and EBR32816703 boards in stock---collecting a bit of dust (they're for older models that have long been discontinued)

If you can verify the part number on the board---you can have it NO charge (you pay shipping) 

Send me a PM with your phone number---and I'll have my office contact you.

 

Edited August 5, 2016 by john63

[Lighthouse]

I had one this week that was throwing a LE code and found the bolt loose on the motor. Tightened it up and worked fine.

[Samurai Appliance Repair Man]

Grasshoppahs can't PM, but Tom can send in a contact form and I'll relay the contact info to John. 

[tomD]

https://drive.google.com/open?id=0B6YpSmnGl2wRdHZsWER5a3lCQjQ

Hi John,

The link above is a photo of the part number and date of manufacture. 

I will absolutely test the current in a few hours and reply back with the result. 

I truly appreciate your efforts to assist!!

thank you!

[tomD]

Thank you Samurai!

[tomD]

test complete- main board failed

correct part number confirmed upon removal of circuit board,

Circuit Board Housing 4974ER1003 S.W 03.5

https://drive.google.com/open?id=0B6YpSmnGl2wRTkx0TkdhR2dZdlk

Circuit Board 6871ER1003F

https://drive.google.com/open?id=0B6YpSmnGl2wRQWFXOHA4amVYbVU

https://drive.google.com/open?id=0B6YpSmnGl2wRY21zUW1SSGZIQmM

Circuit Board Housing Cover 6871ER1052F

https://drive.google.com/open?id=0B6YpSmnGl2wRdHZsWER5a3lCQjQ

 

I would be very greatful if you are able to provide a replacement. Please contact me or provide your contact information so we can coordinate.

https://drive.google.com/open?id=0B6YpSmnGl2wRVE91Q25zcF9PQ0E

Thanks again for your guidance!

[Coupe]

On 8/4/2016 at 10:34 PM, john63 said:

Built April 2005

Unplug washer

Set test meter to DC voltage test mode

Place test meter leads into the plug at the RED and BLUE wires

Do not hold or touch the test leads or plug

Plug in washer

Press and hold the SPIN SPEED and SOIL LEVEL buttons

Press the POWER button and release all three buttons

Wait until the door locks (single click sound)

Press the START button once

Is there voltage showing on the test meter? Should be about 127 VDC

If no voltage---Main Board has failed (failed relay).

There's a problem with the part number on your first post---it is not a valid number.

For the WM2077CW washer---two Main Boards were used

The original (does NOT have an option known as TUB CLEAN CYCLE)---is p/n: 6871ER1003F

Later built models---with the Tub Clean feature---will be p/n: EBR32816703

Check your Main Board (remove it from the washer if needed) on both sides for a valid part number and post it.

According to LGs website---your model is listed as using the 6871ER1003F

Both Main Boards are NLA.

As it happens--I have been doing LG warranty (and out of warranty) service for a number of years

We also sell rebuilt LG appliances---so our inventory is fairly extensive

I have several *used* (verified good) 6871ER1003F and EBR32816703 boards in stock---collecting a bit of dust (they're for older models that have long been discontinued)

If you can verify the part number on the board---you can have it NO charge (you pay shipping) 

Send me a PM with your phone number---and I'll have my office contact you.

 

Do you happen to still have any of these boards available for sale? Have a feeling I may need one.