The Midea 17131000002821 Refrigerator Main Control Board is a component that controls the functions of a refrigerator. It is responsible for regulating the temperature, turning the compressor on and off, and monitoring other functions of the refrigerator. If the main control board fails, the refrigerator may not work properly or at all https://www.hnkparts.com/midea-17131000002821-refrigerator-main-control-board