{"product_id":"oem-lennox-outdoor-fan-power-circuit-board-12u84","title":"OEM Lennox Outdoor Fan Power Circuit Board — 12U84","description":"\u003cp\u003eThe genuine OEM Lennox \u003cstrong\u003e12U84\u003c\/strong\u003e, also identified as part 104351-01, is an outdoor fan power circuit board that drives and regulates the condenser fan motor in your Lennox outdoor unit. It manages the power and control signals that start, run, and modulate the fan, ensuring proper airflow across the outdoor coil for efficient heat rejection during both cooling and heat-pump operation.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCommon failure symptoms:\u003c\/strong\u003e When this circuit fails you may see an outdoor fan that won't start, runs at the wrong speed, cycles on and off erratically, or stops entirely — often accompanied by high head pressure, compressor overheating, reduced cooling capacity, or a system that trips on a high-pressure or fault lockout. Visible burnt spots, swollen capacitors, or a scorched smell on the board confirm the module needs replacement.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhy OEM matters:\u003c\/strong\u003e The Lennox \u003cstrong\u003e12U84\u003c\/strong\u003e is matched to the exact voltage, motor type, and control protocol of your unit. Aftermarket boards frequently mismatch fan-speed programming or connector pinouts, leading to nuisance faults and premature failure. The authentic factory part guarantees plug-in compatibility, correct fan performance, and the long service life Lennox engineered. Get your outdoor unit moving air correctly again with the genuine replacement.\u003c\/p\u003e","brand":"Lennox","offers":[{"title":"Default Title","offer_id":63081081766259,"sku":"LNX-12U84","price":39.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-control-board-furnace-LNX-12U84.jpg?v=1783762862","url":"https:\/\/nationalhvacparts.com\/products\/oem-lennox-outdoor-fan-power-circuit-board-12u84","provider":"National HVAC Parts","version":"1.0","type":"link"}