LDF7811ST-01 LG Dishwasher - Instructions

Check the motor and discovered roughness when you turned the shaft. I assume there was a bearing problem. I ordered a new motor from part select and upon the replacement washer is working great! Thanks part select, my part arrived in a timely manner and you guys saved me approx. $500. Thanx again. Richard Sansom

Replaced filter assembly, mesh, check valve and impeller. Root cause was tears in almost all the fine mesh filters on the filter assy. 30 minutes. caution: impeller screw is left hand thread. This "top of the line" unit, although quiet and very good at cleaning, has had leaks, needed a new motor and this last repair. I've been able to do all the repairs and avoid expensive service calls as all the problems started to happen shortly after the warranty was up.

First, PartSelect is great!; fast,& accurate. 1. Inside the dishwasher: remove trays. Remove (A050) lower water sprayer from bottom by pulling up. Remove (F191) top sprayer assembly by pulling away from clip holders. Remove (M110) by removing the holding screws. This part cover the whole sump and has kind-of an open screen circling the unit. Now you will see the white plastic impeller (M120) which is attached the the motor with one Phillips head screw. WARNING. The Phillips head screw (holding the impeller in place) is a REVERSE THREADED SCREW. Turn the screw CLOCKWISE to remove it. Then remove the impeller from the motor shaft. Underneath and outside the washer: Remove the bottom plate. Finally remove the motor by unscrewing the four holding screws and electrical wiring.

Turned out to be the main PCB. I tried 2 versions of the board with no success only to realize the replaced version changed geographical location of the power in keyed fitting. After I figured this out, it took about 30 min to complete. There was never anything wrong with the original display PCB.