Just this last week, our dishwasher is not completely draining. About an inch of water in the bottom.
Serial Number is LM728541B
Cannot find any info on the given model number, please check it.
Note: If this is not a USA model I probably will not be able to find anything.
If your unit has a fine screen filter at the back/bottom of the tub then it could be a piston and nut problem. Remove the screen filter assembly and the piston and nut. It unscrews from the floor of the tub. Check that it is sealing correctly.
If this assembly does not seal correctly then during drain some of the water gets directed back into the tub instead of out the drain.
By reading previous posts we were able to remove the white arm on the bottom of the dishwasher, removed the larger fine screen and then shove the hose coming down the back out of the way of the filter cup, which when removed was clogged with paper (likely labels from jars that were put in the dishwasher) So we cleaned it out and now it works just fine.
Thanks so much.