Lennox 52M46 Control Board R-410A allows for flexible sensor placement

allows for flexible sensor placement while resisting corrosion

Key Benefits Simplified Installation: The split-core design allows for quick clamping onto conductors without breaking the circuit

without needing to cycle power to the primary controller

the System Sensor MHR provides a compact

Lennox 52M46 Control Board R-410A allows for flexible sensor placementThe 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