Replacement Gas Valve

This replacement control board is designed for Lennox G24M series gas furnaces and provides comprehensive furnace management functions including ignition control, blower operation, gas valve regulation, inducer fan control, flame monitoring, and safety limit protection. The board integrates advanced diagnostic capabilities through onboard LED indicators that display operational status and fault codes, enabling technicians to quickly identify issues such as limit trips or pressure switch malfunctions without additional diagnostic equipment. The control board operates on 120V/60Hz single-phase power supply drawing less than 12 amps for primary operation, with an integrated 24VAC low-voltage control section managed through the furnace control transformer. It supports both direct spark and hot surface ignition systems, including compatibility with the Lennox SureLight silicon-nitride ignition technology found in late-model units. The board features robust valve and ignition control outputs rated up to 2.0A at 80VAC for ignitor circuits and 1.5A at 25VAC for gas valve circuits, with built-in retry logic for reliable ignition sequencing. Ideal for HVAC contractors, facility maintenance teams, and furnace replacement applications, this control board restores full operational capacity to Lennox heating systems. The diagnostic LED feedback system reduces troubleshooting time and service costs while the integrated safety limit monitoring protects equipment and occupants. Compatible with existing Lennox furnace installations using the 63K8901 specification, this replacement component meets original equipment standards for reliable, code-compliant operation in commercial and residential HVAC applications.