Author Topic: LG LE error code - Stator/Windings test  (Read 8188 times)

Offline john63

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Re: LG LE error code - Stator/Windings test
« Reply #20 on: March 13, 2012, 09:01:43 PM »
Effective March 2008

Offline roodog

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Re: LG LE error code - Stator/Windings test
« Reply #21 on: March 14, 2012, 06:08:48 PM »
"(2) did the QC test for low drum spin (IF81) and first time it groaned, second time, nothing....test voltage output with just power on (nothing...expected?), then tested in QC test mode...still nothing?

does this mean the power board is faulty.....any double check of this, just so I know I'm not making another rookie mistake? "

ordered/received another Hall Sensor and still not getting resistance on blue/white red/white?? supposedly brand new part....would (another) faulty Hall Sensor still cause no voltage from PCB Assembly to Stator? I tried QC Test for spin speed and nothing!

any thoughts.

Offline john63

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Re: LG LE error code - Stator/Windings test
« Reply #22 on: March 14, 2012, 06:19:33 PM »
Remove the WIRE HARNESS which "runs" from the HALL EFFECT SENSOR to the blue-colored plug at the back/rear of the washer (less than 20 inches length).

Have an assistant hold the WIRE HARNESS.

Test the continuity of each wire (4 wires total) while your helper moves/bends the wire one-at-a-time.
If there's a "break" in one of the wires---remove the tape---repair the wire---re-tape the wires.
Re-install the WIRE HARNESS---add a new NYLON WIRE TIE to secure the WIRE HARNESS to the base of the washer---but allow some *slack* for tub gyration/movement during the spin cycle.

Test washer.

Offline roodog

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Re: LG LE error code - Stator/Windings test
« Reply #23 on: March 14, 2012, 06:47:19 PM »
I have tested at the Main Board, also at the 1st harness you mention, finally the HE Sensor itself, both when it is still connected to the Stator and then just on it's own....nothing

Offline john63

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Re: LG LE error code - Stator/Windings test
« Reply #24 on: March 14, 2012, 06:57:47 PM »
We're not looking for *voltage*.

It's super-imperative that the 4 wires on the HARNESS---from the back of the washer-to-the-HALL EFFECT SENSOR be inspected for CONTINUITY (not voltage).

Once in awhile---a wire breaks/fails ***inside*** the one of the wires.
The insulation of the wire can be undamaged.
Test the WIRES---patiently & thoroughly.

Offline roodog

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Re: LG LE error code - Stator/Windings test
« Reply #25 on: March 14, 2012, 07:12:29 PM »
no, I was referring to continuity, as per the testing protocol on previous blogs...ie. Test Points (1) to (2) (White and Red) and (1) to (3) (White and Blue) should read cont of 8-12kOhm ..............wait, a previous tech told me to use the 200 Ohm setting on my digital multimemeter....but going back to what I thought was correct (20k) these register 9.5 to 9.8.....is THIS correct and is this HE sensor fine? (I tested my original one on the 20k setting and the white/blue had no cont) if so, does that mean it is ONLY the main board (PWB?) as I am not getting any voltage on my QC spin test?

Offline john63

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Re: LG LE error code - Stator/Windings test
« Reply #26 on: March 14, 2012, 07:57:49 PM »
Remove this HARNESS and verify that each individual wire has continuity from one end to the other.


http://www.repairclinic.com/PartDetail/Wire-Harness/6877ER1016B/1268330

Offline roodog

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Re: LG LE error code - Stator/Windings test
« Reply #27 on: March 15, 2012, 10:16:55 AM »
checked both 4 wire HE and 3 wire Stator from PWB to Stator connectors.....end to end....all read around 0.9 on 200 Ohm setting....so no breaks, correct?

.....so still the burning question being....should I get some voltage output at Motor Drive (3 wire) at the board when doing a QC Test diagnostic for low/high spin speed....if I have ruled out the HE sensor as the cause, does this leave only the PWB Assembly?

as some background, I tried to perform this test  before....it groaned at the first attempt and did nothing on the second....I tested for voltage and nothing exiting PWB (nor reaching the stator or harnesses either obviously)

Offline john63

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Re: LG LE error code - Stator/Windings test
« Reply #28 on: March 15, 2012, 07:55:02 PM »
When an LG washer has an "LE" error (that will NOT reset after unplugging the washer) in most cases the HALL EFFECT SENSOR is at fault.

Since you've replaced the HALL EFFECT SENSOR---the next most likely cause will be a broken wire in the WIRE HARNESS leading to the sensor.

When testing the continuity of the sensor WIRE HARNESS---it is important to flex the harness while test continuity.
It is not unusual to find a faulty/failed wire within the harness---that gives continuity---until it has been flexed/moved.
If a wire has been found to be at fault---the damage will usually be found (if looking at the photo of the harness in an earlier post)---under the white tape of the harness---at the 5 o'clock position on the photo.

If the WIRE HARNESS is not at fault---then the MAIN BOARD is the next "suspect" (very rare).

To properly test MAIN BOARD output:

Unplug Washer

Remove the rear access panel

Place the test meter leads into the plug (do not disconnect the plug) connections BLUE & GRAY at the HALL EFFECT SENSOR.

Plug in washer

Press Power button (only)

The test meter should show: 10 to 15 volts DC (direct current)

If not---replace the MAIN BOARD.

NOTE: When ordering a new MAIN BOARD for a WM2277 washer---ALWAYS provide the SERIAL NUMBER.
Several production changes were made to this model washer before it was discontinued.
There at least 3 different MAIN BOARD part numbers for the same model number washer.
Only a SERIAL NUMBER assures receiving the correct MAIN BOARD.
« Last Edit: March 15, 2012, 08:09:08 PM by john63 »

 

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