Reznor 257531 UTEC Ignition Board Kit is an electronic control module designed to manage the ignition sequence and burner operation in compatible gas-fired HVAC equipment. It works by coordinating ignition timing, monitoring flame detection, and controlling key safety and operating functions to ensure efficient and reliable heating performance. This ignition board kit is commonly used... https://www.partshnc.com/257531-reznor-utec-ignition-board-kit