Andrew S Derry , PA September 22, 2020 Appliance: Frigidaire Freezer FFU20FC6AW4 Frigidaire Freezer Ffu20fc6aw4: Was freezing up with ice, needed new fan and defrost switch. How to replace Mounting Bracket (Support). I replaced the fan and switch for defrosting on the coil. Do-It-Yourself Rating: Repair Time Estimate: 1-2 hours