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Member Since 25 Jun 2010
Offline Last Active Dec 16 2014 09:22 PM

Posts I've Made

In Topic: LG WM2101HW noisy, stuck on 9 min. UE error

07 November 2014 - 07:08 PM

Good job:)

In Topic: LDF7810ST -- LG d/w with poor washing

06 November 2014 - 10:14 PM

<<< Serial # for the unit is 512KW00735 >>>




Built December 2005




<<< Came up on unit with owner giving a complaint about washing problems, saying it was worse in upper rack. 


1)  Partially undissolved detergent left in dispenser.

2)  Top of the inner door was wet wet wet. 

3)  No error codes on the screen or having popped up according to customer. >>>




First thing to do---is ask the customer if any previous repairs/service had been done to the dishwasher since new.


If no---the SUMP ASSY is likely the original and is flawed (poor wash results/noisy)


Revised/improved SUMP ASSY part number is: Part number: AJH31248604

Part number: AJH31248604




<<< There was a wire tie on the main control board (insulated metal, not a zip tie) that showed scorch marks. >>>




Possibly shorted at some point.

However---most LG dishwashers WITH the tar-like insulation/sound deadener---do leave brownish/black oily residue that *appears* to be an indication of a fault/problem (but is not).




<<< LOTS of rust on the frame with a drip trail going all the way up to the vent motor. Looks like there's a split where the plastic vent housing hits the motor >>>




The original Vent/Duct connection to the Blower Housing is prone to seepage type leaks (at the point where the long white plastic tube attaches to the Blower Housing).

Pull off the long tube---add silicone sealer to the Blower Housing and re-attach the duct.

If a seepage-type leak is also found at the hole on the stainless steel door---silicone sealer solves that as well (disconnect the Blower Housing)




<<< I put the machine into "rinse".  It filled up to the door, so it looked like a complete fill. >>>




The correct amount of water entering the tub---should at the ring/indentation on the stainless steel tub (more than that is an overfill condition)


This dishwasher should also be upgraded with a new GUIDE ASSY (Part number: 4975DD1001A

Part number: 4975DD1001A

)---to eliminate a very random/unpredictable leak-at-the-door symptom. The Guide Assy has also been re-designed to eliminate *siphoning* during wash/air sucking sounds during wash/and Heating Element damage


The Drain Hose (Part number: AEM69493801

Part number: AEM69493801

)has also been changed---to fit/work with the new Guide Assy (eliminate siphoning ) and is an improvement over the original (less prone to cracking/splitting/water leaks).




<<< During the cycle, the upper wash arm never moved.  Upper wash arm was clean, no clogged holes. >>>




Although the Vario Motor *can* be at fault---it is a rare failure (new Sump Assy is a sub-assy and comes with a Vario Motor---among other parts/components)


NOTE: On LG dishwashers---the lower wash arm is pressurized with water for about 1.5 minutes---then the middle & upper wash arm for 1.5 mins (alternating)


On this dishwasher---the sound deadening/insulation is a tar-like material.

LG has instructed (and therefore "authorized/allowed"") their technicians to do the following...


1) Inspect all wiring inside the door---from the bottom of the door assy---to the Detergent Dispenser Housing.

Repair any/all wiring as needed


2) Wrap the entire wire harness from the bottom of the door---up to the Detergent Dispenser housing---with electrical tape

Place a small section of cardboard between the wire harness and the tar-like material

Re-install door panel




<<< Also, taking off the kick plate to look at the schematic, there was a scorch mark on the kick plate. >>>




Likely caused by a shorted wire at the Terminal Box---an older problem that was corrected.

Common to see on many dishwashers---usually an installer added wire caps to join the wiring and "tightened" them very *delicately*




<<< in this case it's Joe Friday and just the facts. >>>




The best policy.

Full disclosure---and let the customer decide what to do:)


In this case---we're looking at...


1) Sump Assy (Part number: AJH31248604

Part number: AJH31248604



2) Guide Assy (Part number: 4975DD1001A

Part number: 4975DD1001A



3) Drain Hose (Part number: AEM69493803

Part number: AEM69493803



4) Wiring Repair in door


5) Silicone Sealant for Duct


6) Likely new Door Cables (Part number: 4933DD3001B

Part number: 4933DD3001B

Improved/stronger/quieter. 2 needed


Good luck

In Topic: LG WT4870CW UE 22 CODE

03 November 2014 - 10:34 PM

Welcome to the laundry washer equivalent of "flutter" (http://en.wikipedia....niff_Flight_542)


If this washer was built before September 2013...


The Main Board software needs to be updated (contact LG)


It's a free service---even if out of warranty


The authorized LG servicer has the option of using a portable "jig' to erase the origin software---and upload a revised software or replace the Main Board.


The Stator and Rotor are not at fault (nor is the Hall Effect Sensor)


After the Software Update has been performed---inform your servicer that...


There may be a possibility of "Tolerance Stack-up" (I sometimes wonder though---if that's really the case)


To rule out Tolerance Stack-up...


Loosen the Pulsator Bolt (10mm) and re-tighten


Remove the Rotor Bolt (24mm)---then remove all of the Stator Bolts (10mm)---re-install and re-tighten all bolts


Try washer for 3 to 5 loads to verify that the "uE" (not an error code) and especially "UE" (this IS an error code) has significantly diminished in frequency


If not---contact LG again and read them the riot-act for a washer that is not repairable (for at least 70% of the time that these steps are performed)


The top loading washers (all brands) without an agitator---are a nightmare of balance-related nuisance errors and the resulting re-filling/re-pulsation/re-draining of water before attempting to enter the spin cycle---again. Cycle durations run between 2 to 3 hours before the washer "defaults" and terminates the cycle (usually displaying a "UE" error)


If this washer were a passenger airplane---there would've been numerous break-up-in-flight crashes by now.


With that kind of liability (in commercial air travel)---the problem(s) likely would also have been identified/corrected years ago.


Good luck.

In Topic: LG WM2101HW noisy, stuck on 9 min. UE error

02 November 2014 - 12:11 PM

The Hall Sensor is not likely to be at fault (I've never had a failure after 2008)


The Rotor looks fine.




<<<The hum, then growl results in an LE error if I let it go long enough.>>>




A failing Motor Wire harness can cause this---broken strands of wire---that are not visible.


When this occurs--- the balance algorithm is also affected---resulting in a "UE" error at times.

The tub will usually spin smoothly at first---and then suddenly become out-of-balance---in addition to growling/grinding noise.




<<<And the rotor would push in when I would put the assembly back on sometimes. I would just push the tub back or pull the shaft back out - is that normal?>>>





In Topic: LG WM2101HW noisy, stuck on 9 min. UE error

01 November 2014 - 10:14 PM

Must be a typo on the app-pros site...

The Motor Wire Harness usually retails for about $20

Here's similar Motor Wire Harness---that *can* be used in the WM2101 washer...

Part number: ap4439126

Part number: ap4439126

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