{"product_id":"oem-goodman-integrated-furnace-control-board-for-gus100-4-b1809904s","title":"OEM Goodman Integrated Furnace Control Board for GUS100-4 — B1809904S","description":"\u003cp\u003eThe \u003cstrong\u003eGoodman B1809904S Integrated Furnace Control Board\u003c\/strong\u003e is the genuine OEM electronic brain for your \u003cstrong\u003eGUS100-4\u003c\/strong\u003e gas furnace. This board manages ignition sequencing, blower timing, safety-circuit monitoring, and diagnostic fault codes. When a furnace throws erratic error codes, fails to ignite, or the blower won't cycle correctly, a failed control board is the most common culprit — and this is the exact part Goodman shipped from the factory.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003ePart Number: B1809904S (OEM)\u003c\/li\u003e\n\u003cli\u003eType: Integrated furnace ignition control board\u003c\/li\u003e\n\u003cli\u003eFits: Goodman GUS100-4 gas furnace\u003c\/li\u003e\n\u003cli\u003eFunction: Ignition control, blower timing, safety monitoring, LED fault diagnostics\u003c\/li\u003e\n\u003cli\u003eBrand: Goodman OEM replacement\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eOEM vs. Generic\u003c\/h3\u003e\u003cp\u003eThe \u003cstrong\u003eOEM B1809904S\u003c\/strong\u003e is programmed with Goodman's exact ignition and timing logic, guaranteeing correct sequencing and safety-lockout behavior for the GUS100 platform. Generic universal boards may require rewiring and jumper reconfiguration and can trip nuisance faults. For a control board — the component most tied to safe operation — we strongly recommend OEM.\u003c\/p\u003e\u003ch3\u003eInstallation Difficulty: Advanced\u003c\/h3\u003e\u003cp\u003eReplacing a control board involves 120V line voltage and multiple low-voltage connectors. Photograph every wire before removal and match connector positions exactly. Always shut off power at the disconnect before servicing. If you are not comfortable working with furnace electrical systems, hire a licensed HVAC technician.\u003c\/p\u003e","brand":"Goodman","offers":[{"title":"Default Title","offer_id":63058199085427,"sku":"GOODMAN-13350","price":191.95,"currency_code":"USD","in_stock":true}],"url":"https:\/\/nationalhvacparts.com\/products\/oem-goodman-integrated-furnace-control-board-for-gus100-4-b1809904s","provider":"National HVAC Parts","version":"1.0","type":"link"}