Lennox 52M46 Control Board 30067439-890 inspecting this plate for integrity

inspecting this plate for integrity is standard procedure to prevent hazardous exhaust recirculation or premature motor failure due to vibration

preventing slippage and shaft scoring

these deep-pleat filters typically require replacement every 6 to 9 months

The Lennox X7935 is a professional-grade MERV 16 pleated filter designed for the Healthy Climate Carbon Clean 16 air filtration system

Engineered specifically for ICP furnace control board replacement applications

Lennox 52M46 Control Board 30067439-890 inspecting this plate for integrityThe Lennox 52M46 Control Board, also identified by part number 52M4601, is the direct replacement integrated furnace control (IFC) for reliable ignition and blower motor management in Lennox G40, G41, and G50 series units. Optimized for single stage gas furnaces, this circuit board manages the hot surface ignitor (HSI) timing and flame rectification sensing to ensure stable combustion cycles. Contractors often source this for diagnostic code flashes