{"product_id":"oem-goodman-furnace-control-board-9-pin-for-gmth090-5b-b1809913s","title":"OEM Goodman Furnace Control Board 9-Pin for GMTH090-5B — B1809913S","description":"\u003cp\u003eThe Goodman \u003cstrong\u003eB1809913S Circuit Board with 9-Pin Harness\u003c\/strong\u003e is the genuine OEM integrated furnace control (IFC) for the \u003cstrong\u003eGMTH090-5B\u003c\/strong\u003e gas furnace. This board is the brain of the furnace — it sequences the inducer, igniter, gas valve, and blower, monitors safety limits and flame sense, and flashes diagnostic fault codes. It ships with the matching 9-pin harness for a clean, plug-and-play swap.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eType: Integrated furnace control board (IFC)\u003c\/li\u003e\n\u003cli\u003eInput: 120VAC line \/ 24VAC control\u003c\/li\u003e\n\u003cli\u003eIncludes: 9-pin wiring harness\u003c\/li\u003e\n\u003cli\u003eFunctions: Hot-surface ignition sequencing, blower timing, flame sense, diagnostics\u003c\/li\u003e\n\u003cli\u003eCompatibility: Goodman GMTH090-5B and compatible models\u003c\/li\u003e\n\u003cli\u003eBrand: Genuine Goodman OEM\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eOEM vs. Generic\u003c\/h3\u003e\u003cp\u003eThe genuine B1809913S is pre-flashed with the exact ignition timing, blower delays, and safety logic Goodman certified for this furnace. Aftermarket or unbranded boards can mismatch fan on\/off delays, misread the flame signal, or void warranty coverage. For a heating appliance, the OEM board is the safe, reliable choice.\u003c\/p\u003e\u003ch3\u003eInstallation Difficulty\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eAdvanced (4 of 5).\u003c\/strong\u003e Shut off power and gas. Photograph all connections, transfer wiring one lead at a time to the new board, and mount using the existing standoffs. Verify line polarity and ground, then run a full heat cycle and confirm no fault codes. Professional installation recommended for anyone unfamiliar with furnace control wiring.\u003c\/p\u003e\u003cp\u003eRestore reliable, safe operation to your GMTH090-5B with genuine Goodman control electronics.\u003c\/p\u003e","brand":"Goodman","offers":[{"title":"Default Title","offer_id":63058167103859,"sku":"GOODMAN-12588","price":184.95,"currency_code":"USD","in_stock":true}],"url":"https:\/\/nationalhvacparts.com\/products\/oem-goodman-furnace-control-board-9-pin-for-gmth090-5b-b1809913s","provider":"National HVAC Parts","version":"1.0","type":"link"}