The Bosch HVAC 8733956230 Main Control Board Assembly is a replacement electronic control component designed to manage and coordinate key functions within compatible Bosch HVAC systems. It processes signals from sensors, thermostats, and other system components to regulate heating, cooling, airflow, and operational sequences. This control board is used in compatible Bosch heating and ... https://www.partshnc.com/bosch-hvac-8733956230-main-control-board-assembly