Lennox 49M84 Flame Sensor Direct OEM Compatibility: Specifically designed

Direct OEM Compatibility: Specifically designed for Marley and QMark heating equipment

it does not contain an internal lamp for visual status indication

During HVAC pilot line repair

and high-ambient heat—factors that typically lead to premature failure in standard electrolytic units

Lennox 49M84 Flame Sensor Direct OEM Compatibility: Specifically designedThe Lennox 49M84 Flame Sensor is a critical OEM replacement part designed for precision flame rectification in gas fired heating systems. Engineered for high temperature resilience, this L Bend style sensor monitors the burner's flame status, transmitting a DC microamp signal to the integrated furnace control to ensure safe and continuous operation. A failing 49M84 is often the culprit when a furnace cycles through several ignition attempts before a