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The Goodman B1370724 is a genuine OEM ignition control module (integrated furnace control board) for the Goodman GUPI120-5 gas furnace. This board is the brain of the heating sequence — it manages the inducer, igniter warm-up, gas valve timing, flame sensing, blower delays, and safety lockouts, and it flashes diagnostic fault codes via an on-board LED. A failed module typically causes no ignition, no blower, random lockouts, or a furnace that ignores the thermostat call.
For a control board we strongly recommend the OEM B1370724 — the firmware timing, connector pinout, and safety logic are matched to your furnace exactly, so ignition sequencing and lockout behavior are guaranteed correct. Generic/aftermarket boards exist but require careful cross-referencing of connector layout and timing; a mismatch can prevent ignition or compromise safety interlocks.
Moderate (3/5). Disconnect power, photograph the wiring, transfer each labeled connector to the matching terminal on the new board, and remount. About 30–45 minutes. Seat every connector fully and confirm proper ignition sequence and blower operation after power-up.