To verify that the damper door is broken, remove the light shield and rear light bulb from the top of the refrigerator. Enter the factory diagnostic mode by pushing all four temperature control buttons at the same time and start the damper motor test: set the freezer control to 1 (FZ 1) and fresh food control to 0 (FF 0) . Press any other button, such as
Custom Cool or
Filter Reset to start the damper test cycle. Now, shine a flashlight through right hand side opening of the light assembly so you can see the movement of damper door. If'n it don't move, well, come git you a
new and improved (ha!) damper door kit.
Oh, by the way: to exit test mode, do FZ 1 and FF 6.