3YR OLD DISH WASHER STOPPED WORKING IT WILL DRAIN BUT NOT, FILL, WHEN TRY TO RUN IT BEEPS AND BEEPS GREEN LIGHT FLASHES IN 2 FLASH SEQUENCE, THIS APPLIES TO ANY WASH IT BEEPS AS SOON AS YOU SHUT THE DOOR YOU CAN HEAR THE DRAIN PUMP WORKING THEN IT STOPS BUT KEEPS BEEPING WHEN YOU OPEN THE DOOR THE GREEN LIGHT FLASHING. WOULD BE GRATEFUL FOR ANY IDEAS AS TO WHAT IT MIGHT BE. THANKS CHRIS