NOTE: An all new LG dishwasher is being (or in the process of being) released shortly.
This all new model will be entirely different than any LG model before it.
Having said that---all current LG dishwasher SUMP ASSYs are interchangeable.
The *only* SUMP ASSY that should be used (regardless of serial number) is: AJH31248604
If an older part number is still *floating around* in some parts-jobber's stock---it should *not* be used.
6871DD1002B or 3485ED1002B
The upgraded SUMP ASSY (AJH31248604
) corrects the problem of failing WASH MOTORS.
The *only* difference of note---is that the TURBIDITY SENSOR* on the newer SUMP ASSY has been relocated.
To *reach* the sensor (plug)---simply untape the wires from the harness and re-rout the plug to the relocated sensor.
If you're looking to further improve wash results---consistently---simply leave the TURBIDITY SENSOR unplugged (leave the plug where it is).
No error message will be displayed.
All cycles will run their normally alotted run times---rather than be prematurely terminated at an earlier time due to the sensor data feedback (information) to the MAIN BOARD.
In other words---the TURBIDITY SENSOR allows for *reducing* the overall run-time of a chosen cycle---in a rather aggressive profile to conserve energy.
Who wants occassional incomplete wash results---while conserving a statistically-insignificant amount of water & electric?