I have a Kenmore dishwasher model 665.12773K311. When I ran a Normal wash cycle it ran for several hours (about 8) and leaked water. I opened the door to stop it and it was full of soapy water. I pushed the cancel button and closed the door and it pumped the water out. I ran the 1 Hour cycle and it ran fine. I tried a Normal cycle again and it ran without stopping again but it didn't leak water. What could the problem be?