There is a small container at the bottom of the diskwasher. It has a float in it. The container gets overflow water in it when certain powders or tablets are used. You ned to take the kick board off, unscrew the metal cover plate to get to the float. Use a spong to soak up the water so that the float goes down to a level to set things to normal. An alternative to unscrewing the metal plate is to turn the dish washer on it's side and let the water out of the container that way.
Good luck.
Bruce McMurtrie, March 2008