Amanda W Boise , ID October 08, 2020 Appliance: KitchenAid Refrigerator KBFS20EVBL10 Kitchenaid Bottom-Mount Refrigerator Kbfs20evbl10: Clicking/knocking coming from motor within part controlling temp flap in fridge. How to replace Damper Control Assembly. Removed cover and replaced the damper control. Do-It-Yourself Rating: Repair Time Estimate: Less than 15 minutes