Tim for Model Number SHU66C02 UC/14 (FD 8211-) Hello. Thank you for your help in diagnosing this problem: Symptoms: Dishwasher starts well (initial drain, water fill, circulation pump comes on). Generally, if I don't interrupt the cycle (to add more dishes, for example), the dishwasher will run through its full cycle just fine. On two occasions now, after I interrupted the cycle, the dishwasher upon being restarted would immediately restart the circulation pump but also immediately drain until all the water was gone. The drain pump would stop but the circulation pump would continue. The water would not refill. After a couple minutes, I would cancel the cycle and it would drop to zero but the circulation pump would still continue. The only way I could get the circulation pump to turn off was by turning off the dishwasher. If I then restarted the dishwasher, the circulation pump would immediately come on but the water would not fill. The first time this happened a few weeks ago, I tore the dishwasher apart to the point of inspecting the float tube; it seemed to be fine and the float switches were "clicking" reasonably well. After I assembled the dishwasher and tested it, it worked just fine. The second time which just happened yesterday, I let the dishwasher sit for about 14 hours and just restarted it, and it started up just fine. It's currently running through its cycle seemingly just fine. Question: What could be causing this problem? I'm thinking it's either a bad float switch (not sure why the circulation pump continues to run after being cancelled), a bad turbidity sensor (why doesn't it fill after being restarted), or a bad control board. Your thoughts? Thank you for your help.
Answer Tim, if the turbidity sensor is clean and the pressure chamber 00499500 is clean, the most likely failure is going to be the power control module 00431430 as the drain pump should not turn on when restarting the wash cycle unless it is in a portion of the cycle to drain water and then refill it. Read More... Answered by AppliancePartsPros.com | Thursday, February 25, 2021