Have got a whirlpool ADG 957 dishwasher that has stopped working. It is making a beeping sound, but it is as if it doing Morse code. The beeping goes through its sequence and then starts again. When you open the door the rinse light comes on regardless of what program selected and the start light continually flashes. Have read on a thread that this could be the temperature sensor, but in the symptoms there the beeping was constant. Any ideas???