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The Goodman B1370724 is a genuine OEM ignition control module — the "brain" that sequences the entire heating cycle on the GUN050-2B gas furnace. It manages the inducer, igniter warm-up, gas-valve timing, flame sensing, and safety lockouts, coordinating every safety switch on the appliance. Symptoms of a failed module include no ignition, a furnace that ignites then shuts down, blinking diagnostic LED fault codes, or a completely dead board. Replacing it restores reliable, code-compliant startup.
For a control board, OEM B1370724 is strongly recommended: the firmware timing, flame-sense sensitivity, and relay ratings are matched to this furnace's ignition system, and a mismatched aftermarket board can cause nuisance lockouts or unsafe operation. Where offered, our generic-equivalent is a validated cross-reference for cost-sensitive repairs, but OEM is the safest, most reliable choice for this component.
Rating: Moderate (3/5). Photograph the wiring first. Disconnect power, transfer each labeled connector to the matching terminal on the new board, remount, and restore power to confirm a clean ignition sequence and no fault codes. Because of the wiring density and safety role, professional installation is recommended.