Lochinvar & A.O. Smith 100109908 Flame Sensor 320819-301 though it is typically factory-configured

though it is typically factory-configured for Natural Gas

Always verify the airflow direction of the existing fan blade before installation

Fail-Safe Operation: The manual reset with power outage feature ensures that critical low-water conditions are addressed by a technician before the burner resumes operation

For systems requiring the valve to close on temperature rise

Lochinvar & A.O. Smith 100109908 Flame Sensor 320819-301 though it is typically factory-configuredThe Lochinvar & A. O. Smith 100109908 Flame Sensor is a critical OEM replacement part designed for precise flame rectification in high efficiency water heaters and boilers. As a seasoned tech, you know that a failing flame sensor rod is the primary culprit behind intermittent data signals and "no flame detected" lockouts. This genuine factory part (formerly identified as part number 9004520215) ensures the flame sensing circuit maintains the microamp