Dorothy R Middleburg , FL June 01, 2019 Appliance: Frigidaire Refrigerator FGUS2642LF2 Frigidaire Refrigerator Fgus2642lf2: SY CF error code probably due to a power surge. How to replace Refrigerator Electronic Control Board. Replaced both computer boards. The main board was a bit of a challenge to remove solely based on the refrigerator placement in the kitchen but the videos I watched prior to the job helped tremendously. 2 People found this story helpful Do-It-Yourself Rating: Repair Time Estimate: 15-30 minutes