Charlie for Model Number SHXM78W55N-01 I keep receiving an intermittent E22 error. The water after the cycles are done sometimes seems a little grainy or cloudy from residual dishwasher tablets, but most of the time everything appears clean. My filters are cleaned every other day and there’s no buildup on there. I also use dishwasher cleaning tablets somewhat regularly. I checked the drain impeller and it is free of debris. Also checked the check valve for the drainage and it is free of clogs too. I replaced the drain pump thinking that it might not be operating properly and it did not fix this error. I’ve also unplugged the dishwasher for extended periods of time so the error should have reset. I noticed the Inlet mechanism/labyrinth has what appears to be a black float valve (overfflow?) and there was yellow gunk stuck in there. I tried cleaning it out with hot water, vinegar and baking soda, and Dawn dish detergent as mechanical cleaning these bends would be impossible. Some of it came out (not all) and the float seems to be moving better and perhaps it’s my imagination, but the dishes seemed to be cleaned better.. I’m not sure how this device works (scratched my head analyzing all the chambers/paths) but I wonder if it has anything to do with the E22 still being intermittent. Right now I’m stuck wondering if it’s this inlet, turbidity sensor, or even the control board. I’m hoping it’s not a control board issue as that can be a pricey fix. I’ve scoured the Internet and can’t find any answers. Thank you.
Answer Charlie, The float that is on there will not have anything to do with the draining but could have been the cause for dishes not cleaning properly. The issue that you are dealing with would be more likely that the control is operating intermittently for the drain and would require a new control board 12016886. Read More... Answered by AppliancePartsPros.com | Wednesday, August 23, 2023