Replacement Motor, 24V

This replacement control board is engineered for Lennox single-stage furnace systems utilizing the SureLight ignition technology. The 50A62-121 serves as the central management hub, coordinating critical HVAC operations including gas valve control, hot surface ignitor activation, inducer motor management, circulating blower operation, humidifier function, and air cleaner integration. Designed for 24V compatible systems, this board accepts input voltage ranging from 18 to 30 VAC at 50 or 60 Hz, making it suitable for standard residential and light commercial heating applications. The integrated hot surface ignitor output delivers 2.0 amperes at 80 VAC with silicon nitride resistive element construction for reliable ignition performance. The inducer relay supports 2.2 full-load amperage with 3.5 locked-rotor amperage at 120 VAC, while the blower relay accommodates up to 14.5 FLA and 25.0 LRA at 120 VAC across heat, cool, and fan outputs. Gas valve control operates at 1.5 amperes and 25 VAC, 50/60 Hz specification. Built with on-board fuses for circuit protection, this board maintains operational integrity across demanding environmental conditions ranging from negative 40 degrees Fahrenheit to 176 degrees Fahrenheit and humidity levels from 5 to 95 percent RH non-condensing. Ideal for HVAC technicians and facility managers requiring a dependable replacement component for Lennox furnace system restoration and maintenance.