I really don't understand. Before I changed the part when the fridge would get too hot or too cold, I would reach in a give the control box a lite smack. As soon as I smacked it I would hear the dampner motor turn on and it would either stop blowing cold air or start blowing cold air which ever was needed.. The control box that was shipped to me acts the exact same way. I got up this morning and it the fridge was 27 degrees, I gave the control box a light tap, and it stopped blowing cold air.