The GE WD21X30864 Dishwasher MC Board With Enclosure provides centralized electronic control for coordinating key dishwasher functions and wash cycles. This replacement main control board assembly includes a protective enclosure and is designed for compatible GE dishwasher models. It works by receiving signals from the user interface, sensors, and other components, then processing the... https://www.hnkparts.com/ge-wd21x30864-dishwasher-mc-board-with-enclosure