{"product_id":"oem-goodman-integrated-furnace-control-board-for-gmnt045-3b-b1809913s","title":"OEM Goodman Integrated Furnace Control Board for GMNT045-3B — B1809913S","description":"\u003cp\u003eThe Goodman \u003cstrong\u003eB1809913S Integrated Furnace Control Board\u003c\/strong\u003e is the genuine OEM \"brains\" of your \u003cstrong\u003eGMNT045-3B\u003c\/strong\u003e gas furnace, supplied complete with the \u003cstrong\u003e9-pin wiring harness\u003c\/strong\u003e for a clean, plug-in replacement. This board manages the entire heating sequence — inducer startup, igniter warm-up, gas-valve timing, flame sensing, and blower control — while monitoring the limit and rollout switches for safe operation. It also drives the diagnostic LED that flashes fault codes during troubleshooting.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eFunction:\u003c\/strong\u003e Integrated furnace control (ignition, sequencing, safety monitoring)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIncluded:\u003c\/strong\u003e Control board + 9-pin wiring harness\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDiagnostics:\u003c\/strong\u003e On-board LED fault-code indication\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eControls:\u003c\/strong\u003e Inducer, hot-surface igniter, gas valve, blower, flame sense\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFits:\u003c\/strong\u003e Goodman\/Amana GMNT045-3B and compatible furnaces\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM Part #:\u003c\/strong\u003e B1809913S\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eOEM vs. Generic\u003c\/h3\u003e\u003cp\u003eAn integrated control is not the place to gamble on aftermarket parts. OEM B1809913S is programmed with Goodman's exact ignition and blower timing and matches the original connector pinout, so the included 9-pin harness plugs straight in. Generic or \"universal\" boards may require rewiring, jumper reconfiguration, and can void the furnace warranty. Choose OEM for guaranteed compatibility and reliable operation.\u003c\/p\u003e\u003ch3\u003eInstallation\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eDifficulty: Moderate (3\/5).\u003c\/strong\u003e Allow 30–45 minutes. Photograph all connections first, cut power at the disconnect, transfer wiring one lead at a time (or reuse the 9-pin harness), and match every terminal to the original layout. After installation, restore power and watch the diagnostic LED through a full heat cycle to confirm normal ignition and blower operation. Before replacing the board, rule out simpler faults — a bad igniter, flame sensor, or blown fuse can mimic board failure.\u003c\/p\u003e","brand":"Goodman","offers":[{"title":"Default Title","offer_id":63058128011635,"sku":"GOODMAN-11629","price":229.95,"currency_code":"USD","in_stock":true}],"url":"https:\/\/nationalhvacparts.com\/products\/oem-goodman-integrated-furnace-control-board-for-gmnt045-3b-b1809913s","provider":"National HVAC Parts","version":"1.0","type":"link"}