Danny S Lake Havasu City , AZ August 01, 2020 Appliance: Whirlpool Refrigerator WRF989SDAM00 Whirlpool Refrigerator Wrf989sdam00 / : Frige not cold enough. How to replace Fan Blade. I replaced the control board, the user interface, the evap fan, and cleaned all collected dust from underneath, works like new! Thank You Appliance Pros Pros !! 1 People found this story helpful Do-It-Yourself Rating: Repair Time Estimate: 1-2 hours