Yesterday my washer worked fine. Today I loaded it up and hit start just like normal. Usually you hear it clunk as the door locks and away it goes. But today it made a humming sound and then began to beep and flash the door open display. I tried changing the dial, opening and closing the door a number of times, unplugging and plugging it back in-nothing helped. If someone could shed some light on this, I would be grateful. Sammy