Answer Sam I am, Normally when the damper cover starts building ice is due to moisture getting into the unit. Check the door seals and make sure that the unit is not staying in defrost too long. To properly assist you we will need your model number to help you with this. Please post your model number with a new question on the parts page. http://www.appliancepartspros.com/modelnumber_locator.aspx Read More... Answered by AppliancePartsPros.com | Tuesday, April 23, 2013