Daughter set the dishwasher on Normal then a 2 hrs delay. She hit the lock button thinking it would lock the door. My father opened the door not seeing the lights lit up. Now the 2 hour delay and the start button lights are flashing continuously. Normal and heat dry lights are lit up but not flashing. I think it has something to do with the lock button being pressed and then the door being opened. What do I need to do to get the washer working again please?