Fred S Lake Worth , FL August 11, 2014 Appliance: Frigidaire Freezer LFFU17F5HWD Frigidaire Freezer Lffu17f5hwd: Door open light was always on and alarm was sounding. How to replace User Control Board. Replaced door switch. Did not fix problem. Only thing left was control module, which come to find out just plugs in. Replaced it and fixed the unit!!! 4 People found this story helpful Do-It-Yourself Rating: Repair Time Estimate: Less than 15 minutes