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The Goodman B1370724 is a genuine OEM furnace ignition control module for the Goodman GUI075-4. This board sequences the ignition cycle — inducer, igniter warm-up, gas valve, and flame sense — and enforces safety lockout if a flame isn't proven. If your furnace won't light, short-cycles, locks out, or the igniter never glows, a failed ignition module is a leading cause.
Ignition modules are safety-critical, and the genuine Goodman OEM board is programmed with the exact ignition and lockout timing your furnace was certified with. Substitute or reflashed boards may misread flame signal or alter trial-for-ignition timing, creating nuisance lockouts or unsafe operation. For any component tied to the gas valve, install the OEM part.
Moderate — technician recommended. The module carries line and low-voltage wiring plus the gas-valve and igniter connections. Photograph the existing wiring, cut power at the disconnect, and transfer connections one at a time to the matching terminals. Anything involving gas ignition should be verified by a licensed HVAC technician after install. Plan on 30–45 minutes.