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The genuine OEM Goodman B1370724 ignition control module is the brain of the ignition sequence on the GUN075-3B gas furnace. It manages the timed light-off routine — energizing the igniter, opening the gas valve, and monitoring flame via the sensor — while enforcing safety lockouts. When a furnace fails to ignite, short-cycles, or locks out after several trials, this module is a prime suspect.
Ignition timing and flame-sense thresholds are firmware-specific. The OEM Goodman module guarantees the exact ignition sequence and pinout this furnace expects — no jumper adapters or timing mismatches. Aftermarket universal boards may require rewiring and can compromise safe light-off. OEM is strongly recommended for control electronics.
Moderate (3/5) — Requires disconnecting a labeled wiring harness and mounting the board. Photograph connections before removal. Power off at the breaker. 30–45 minutes; comfort with furnace wiring recommended.
Compatible with Goodman and Amana furnaces using part B1370724.