I am going to tell what happened and caused this trouble. My customer saw the E:15 code. He found out there was a water leak, he moved tge Dw out to dry up the water. He energized the dw again, the E:15 was gone, that might mean there was display but no more E:15.Do he reassembled the dw, and tried to start a new cycle. But there was no display. He took apart the door to check any loose wires. He didn't see any so called me to check it out. So that's the story. I also checked the wires and harnesses, they seemed OK. I replaced both modules, and the hall sensor, I still have no display. I will go back with some wire/harness sets in case there are some bad connections.I really need to find out where the control power has gone next trip.