Annie P Lincolnton , NC November 23, 2014 Appliance: Frigidaire Freezer FFU21F5HWG Frigidaire Freezer Ffu21f5hwg: Temp controller on door was blinking and compressor would not run for long periods afraid i was gonna loose all frozen food in freezer. How to replace User Control Board. I ordered new controller pad on outside of freezer door. Pulled old one straight out and pushed new one in and fixed all problems...even fixed light inside freezer. All is good. 10 People found this story helpful Do-It-Yourself Rating: Repair Time Estimate: Less than 15 minutes