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The Goodman B1370724 Ignition Control Module is a direct-fit OEM replacement for the Goodman GUN100-4B furnace and compatible Goodman/Amana/Janitrol models. This board is the brain of the heating sequence — it manages the igniter warm-up, gas valve timing, flame sensing, and safety lockouts. A failed module typically shows as no ignition, short cycling, or repeated lockouts.
The OEM B1370724 guarantees exact firmware timing, connector pinout, and mounting for plug-and-play replacement. Our generic equivalent provides compatible functionality at a lower price for out-of-warranty repairs. Both carry a replacement warranty.
Moderate. Disconnect power, photograph the wiring, transfer each labeled connector to the new board, and remount. Careful wire matching is essential — a licensed technician is recommended.