I took the door panel off (6 screws) and remove the two lower kick plates. Then I removed the 2 screws that anchor the top of the dishwasher to the underside of the countertop. Next, I lowered the adjustable leveling feet so I could pull the machine out from under the counter. I removed the sound insulation so I could view the float and the bottom hoses and valves. There was water on the floor of the machine and in the float well. The flood-prevention device had done it job. As I observed the hoses and valves, I could see that the water inlet valve was leaking, so I ordered that part. While waiting for it to arrive, I dried out the floor and well of the dishwasher -- and then waited, and waited and waited. Replacing the valve was simple: disconnect the water and electrical lines on the defective valve and attach them to the new one. And then reassemble the machine in reverse order of the disassembly.