Answer Hi Rambo. Youshould replace the thermister part # is 12002355. It tells the main board how much to open/close the damper assy. Part # is 12002355. The damper gasket is part # WP67006341. untill you get the parts you need then you can unhook the damper and force it open to stay at a 50% opening to get back to normal momentarily. Thank you. Read More... Answered by AppliancePartsPros.com | Friday, September 9, 2011