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The B1370724 is the genuine OEM ignition control module engineered for the Goodman GUE100-5 gas furnace. This board manages the ignition sequence — energizing the igniter, opening the gas valve, and verifying flame — so your furnace lights safely and reliably on every call for heat. A failing ignition module is one of the most common causes of no-heat calls, showing up as short cycling, failure to light, or lockout after several ignition attempts.
The genuine OEM B1370724 is factory-matched to the GUE100-5's wiring harness, timing, and flame-sense circuit, guaranteeing correct ignition sequencing and safety lockout behavior. Aftermarket boards may differ in terminal layout or timing and can trigger nuisance faults. For a safety-critical component like the ignition control, we recommend the OEM part.
Difficulty: Intermediate (3/5). Replacement involves disconnecting power, photographing and transferring the wiring harness terminal by terminal, and mounting the new board. Best performed by a qualified HVAC technician. Always shut off gas and electrical power before servicing.