My KitchenAid dishwasher has started to run all day/night, but not all the time. Sometimes it completes a full cycle normally and sometimes it does not. When it does NOT complete a full cycle and I open the door to stop it, there is no steam that comes out it and nothing is really hot to the touch. When a full cycle is completed and I open the door immediately, everything is normal with steam rising out from the inside and dishes/glass hot to the touch. Do we think this issue is a control board, heating element, turbidity sensor, or all of the above?