{"product_id":"oem-goodman-furnace-control-board-for-gus125-5-b1809904s","title":"OEM Goodman Furnace Control Board for GUS125-5 — B1809904S","description":"\u003cp\u003eThe Goodman \u003cstrong\u003eB1809904S Integrated Furnace Control Board\u003c\/strong\u003e is the genuine OEM brain of the \u003cstrong\u003eGUS125-5\u003c\/strong\u003e gas furnace. This board manages the ignition sequence, blower timing, safety limits, and flame sensing. When it fails, symptoms range from no heat and a dead blower to erratic short-cycling or blinking diagnostic LEDs. Replacing it with the factory-matched control restores full, safe furnace operation.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM Part Number:\u003c\/strong\u003e B1809904S\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Goodman\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFits Model:\u003c\/strong\u003e GUS125-5 (gas furnace)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Integrated furnace control (IFC) board\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFunctions:\u003c\/strong\u003e Ignition timing, blower on\/off delays, safety limit monitoring, flame sense\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDiagnostics:\u003c\/strong\u003e Onboard LED fault codes for quick troubleshooting\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFit:\u003c\/strong\u003e Direct OEM replacement with matching harness plugs\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eOEM vs. Generic:\u003c\/strong\u003e The genuine B1809904S is pre-loaded with the exact firmware, relay ratings, and connector pinout the GUS125-5 expects. Aftermarket or cross-referenced boards may need jumper changes or adapter harnesses and can mis-time the blower, causing nuisance limit trips. For a safety-critical control, the OEM board is the reliable, warranty-safe choice.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eInstall Difficulty:\u003c\/strong\u003e Moderate (3 of 5). Cut power at the breaker first. Photograph the wiring, transfer each plug one at a time to the new board, and confirm the model-specific settings. Basic electrical familiarity recommended; budget 30–45 minutes. If unsure, use a licensed HVAC technician.\u003c\/p\u003e","brand":"Goodman","offers":[{"title":"Default Title","offer_id":63058199413107,"sku":"GOODMAN-13362","price":191.95,"currency_code":"USD","in_stock":true}],"url":"https:\/\/nationalhvacparts.com\/products\/oem-goodman-furnace-control-board-for-gus125-5-b1809904s","provider":"National HVAC Parts","version":"1.0","type":"link"}