Fenwal 05-100000-426 Ignitor Sensor

The Fenwal 05-100000-426 Ignitor Sensor performs ignition and flame sensing operations by generating the spark required for burner lighting while verifying successful combustion after ignition occurs. Its sensing element communicates flame status to the ignition control, allowing the operating sequence to continue only after flame is detected. It is installed in HVAC systems using gas-fired heating equipment, this sensor setup coordinates ignition and combustion monitoring within the burner circuit. The combined ignition and sensing action keeps the heating sequence aligned with programmed safety requirements during repeated operating cycles.