James G Fisherville , KY October 08, 2021 Appliance: Bosch Refrigerator B22CS80SNS/01 Bosch Refrigerator B22cs80sns/01: Refrigerator compressor would not kick in. How to replace Control Board. After testing and troubleshooting the compressor and its control unit, I found the control unit to be defective. I replaced the compressor control unit mounted on the side of the compressor. Do-It-Yourself Rating: Repair Time Estimate: 30-60 minutes