The Lennox 17J56 Flame Sensor is a critical OEM replacement part engineered for precise flame rectification in residential and light commercial Lennox furnace units

a 440V capacitor can safely replace a 370V unit

ensuring compliance in critical building automation and BAS environments

but the orifice #02 specifications are identical

Industrial Durability: Constructed from high-grade brass with an angleway flow pattern to minimize pressure drop and optimize refrigerant flow

Lochinvar & A.O. Smith 100327001 Flame Sensor Kit The Lennox 17J56 Flame SensorThe Lochinvar & A. O. Smith 100327001 Flame Sensor Kit is the verified OEM replacement flame sensor engineered for high efficiency water heaters and boilers. Designed as the direct successor to legacy part numbers PLT1150 and 100165859, this kit is critical for maintaining the flame rectification process within the combustion chamber. As a seasoned technician, you know that a degraded HVAC flame rod is the primary culprit behind intermittent ignition