The Carrier HK42FZ066 Control Board is an electronic component designed to manage and coordinate heating system operations in compatible Carrier HVAC equipment, including gas furnaces. It processes signals from thermostats and safety sensors to control essential functions such as ignition, blower operation, and heating cycles. By coordinating these processes, the control board support... https://www.partshnc.com/carrier-hk42fz066-control-board