The Fenwal 35-665913-119 Ignition Module is a specialized control component designed to manage the ignition sequence in compatible HVAC heating equipment, including furnaces, boilers, and unit heaters. It works by monitoring safety circuits, controlling spark generation, and verifying flame presence before allowing continued burner operation. This process helps ensure safe and efficie... https://www.partshnc.com/35-665913-119-fenwal-24v15sec-pp-ignition-module