Lennox 33F37 Flame Sensor Els PW 17895 5 mm actuator system common

5 mm actuator system common to the Danfoss BE series

Designed for robust performance

Johnson Controls T-4000-2639 Gold Plastic Cover

Lubricate the O-ring with compatible refrigeration oil and tighten the assembly to the manufacturer's torque specification to prevent pinching or extrusion under pressure

Lennox 33F37 Flame Sensor Els PW 17895 5 mm actuator system commonThe Lennox 33F37 Flame Sensor is a critical OEM replacement part engineered to maintain the safety and operational sequence of residential gas furnaces. As an HVAC flame rectification probe, it generates a microamp signal to the furnace control board upon detecting heat, ensuring the gas valve remains open only when a pilot or burner flame is present. This high integrity sensor is functionally identical to part 33F3701 and serves as a direct