For a few weeks now, my GE dishwasher (pdw7880p00ss) will intermittently not drain - when the cycle is done water is standing in the bottom. If I run it again, it drains just fine. For a few days, it did not run at all when the timer was set at night, but started when I ran it in the morning. Finally one morning it wouldn't run at all. It has power, the lights are on, door is closed firmly, selections change when buttons are pressed, and the countdown timer even progresses like it's running but the motor doesn't come on at all.
I replaced the control module thinking that it was a timer issue. The dishwasher ran perfectly through a test cycle and a load of dishes, then the next day didn't drain again. When I tried to start it in a speed wash to get it to drain, it doesn't run at all again (same symptoms as before).
Any suggestions on how to better troubleshoot before replacing anything else would be greatly appreciated.
For the dishwasher not running at all you will want to check the door latch switches to make sure that they are good. Test them for continuity. If they do not check ok then replace the part.
When the dishwasher is running it is making a loud noise and has a bad vibration.
You will want to check the wash impeller to make sure that there is nothing clogged in it and that the impeller is not damaged. This issue sounds like the motor bearing may be bad but the impeller is the first thing to check.