The Samsung DC92-01729V Washer/Dryer Main PCB Assembly is responsible for controlling washing and drying cycles through the processing of signals from the sensors and controlling the speed of the motor, water level, and heating elements. It also helps to maintain the energy, improve the cycle accuracy, and ensure the smooth and functionality of all the parts. https://www.hnkparts.com/dc92-01729v-samsung-pcb-main