This is a follow up. Thanks for answering my earlier question. I do have an air gap on my drain. Only in the final rinse cycle, the water keeps filling and activate the float switch to cause the drain pump to run for a few seconds, and this repeats. If I open the door at this time, the water level is pretty high. And after a while the water will actually overflow, since it keeps filling even with the door open. But at this time the machine is off so the drain pump won't run. I have to shut off the hot water line and the water valve on the dishwasher will then shut. It's hard to believe there's a leak somewhere, since I don't see water anywhere. And the whole situation is quite confusing since the problem only occurs in the final rinse cycle.
This still sounds like the water inlet valve 425458 has failed to me. You see, the water inlet valve is closed by water pressure only. The valve has no spring to aid in its' closure. As long as the water line isn't crimped and the shut off is all the way on, and sufficient water pressure is to the valve, the valve is in need or replacement.
Answered by AppliancePartsPros.com | Wednesday, July 04, 2012