Gina J Cottondale , AL June 05, 2015 Appliance: Frigidaire Refrigerator LGHS2634KP0 Frigidaire Refrigerator Lghs2634kp0: The refrigerator wasn't cooling and was throwing a sy ce code. How to replace Refrigerator Main Control Board. I went to Appliance Parts Pros and searched their repair help and found out what the code meant and what parts were needed to fix it. Another user had posted some great information that let us know that both boards would have to be replaced for compatibility reasons. That probably saved us a lot of headache. We tried to find the parts locally but no one had them in stock. So we placed our order on a Saturday for overnight delivery. The parts were shipped that Monday and arrived early Tuesday. It took us maybe 10 minutes to install both parts and we plugged her up. Came right on and immediately began cooling. Saved ourselves a repair bill and probably some on the parts too! :) 1 People found this story helpful Do-It-Yourself Rating: Repair Time Estimate: Less than 15 minutes