Jerome C Erie , PA June 07, 2018 Appliance: General Electric Refrigerator GFSF2KEYCCC Ge Refrigerator Gfsf2keyccc: The secondary low voltage side of the circuit board failed. How to replace Refrigerator Main Control Board. By replacing the primary circuit board the refrigerator has returned to full function. 1 People found this story helpful Do-It-Yourself Rating: Repair Time Estimate: Less than 15 minutes