• Low cost form, fit and functional genuine replacement control board for Nor dyne: 624631
• For use with G3, G4, G5, G6, M2 and M3 furnace modules
• Controls gas valve, inducer draft motor, circulating blower and hot surface ignitor
• Monitors timing, trial for ignition, flame sensing, lockout, plus pressure, rollout and limit switches
• Microprocessor-based precision