The Whirlpool W10878903 is an essential component for your Whirlpool or Maytag range. It's the electronic control board, or the processing unit of your oven. This circuit board receives signals from the control panel knobs and buttons that you press. This then interprets these commands and directs various range components, such as heating elements, fans, and timers, to complete the desired tasks. For example, if you set your oven to bake at 350 degrees Fahrenheit, the control board transmits signals to turn on the heating element until the oven reaches that temperature. The latter additionally regulates heat distribution and turns the element on and off to keep the desired temperature.