my washer has started to overfill. I suspected it was the water level sensor. I checked the hose and cleaned it to make sure there were no obstructions, the valve does not leak and the diaphram seems to work (holds pressure when pumped). So I put it back together and it worked....but the next day it overfilled again. Since this is a 20 year old machine and the water level switch is close to $100 USD I am hesitant to buy it and not solve the problem.