Hi All. I have checked all the things you mention here and on other sites. (Piston valve, drain pump, etc.). My unit only turns the drain pump on for about two seconds when it enters the drain cycle so it does not even start to pump water out. When in the F1 test mode, it will run the full 75 seconds and pumps out all water. I'm convinced there must be something screwy with the control module. I've tried the resets and everything else. Any thoughts?