{"product_id":"oem-lennox-surelight-control-board-19v36","title":"OEM Lennox SureLight Control Board — 19V36","description":"\u003cp\u003eThe genuine OEM Lennox \u003cstrong\u003e19V36\u003c\/strong\u003e SureLight control board is the integrated furnace control that manages ignition sequencing, blower and inducer operation, safety monitoring, and diagnostics in your Lennox heating system. Acting as the brain of the furnace, it coordinates the igniter, gas valve, flame sensor, and limit switches to ensure safe, reliable startup and shutdown. The onboard SureLight diagnostics also provide fault codes that speed up troubleshooting.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCommon failure symptoms\u003c\/strong\u003e include a furnace that won't ignite, no response from the igniter or blower, repeated ignition lockouts, erratic cycling, or flashing diagnostic LED error codes. Power surges, moisture, cracked solder joints, and burned relays are frequent causes of control board failure.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhy OEM matters:\u003c\/strong\u003e The Lennox \u003cstrong\u003e19V36\u003c\/strong\u003e is programmed with the exact ignition timing, safety logic, and component compatibility your Lennox furnace requires. Aftermarket or incorrect boards can misfire ignition sequences, bypass safety functions, or fail to communicate with system components. Installing the genuine OEM SureLight board restores proper, safe operation and full diagnostic capability so your Lennox furnace performs to factory specifications.\u003c\/p\u003e","brand":"Lennox","offers":[{"title":"Default Title","offer_id":63081132458355,"sku":"LNX-19V36","price":129.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-control-board-furnace-LNX-19V36.jpg?v=1783763792","url":"https:\/\/nationalhvacparts.com\/products\/oem-lennox-surelight-control-board-19v36","provider":"National HVAC Parts","version":"1.0","type":"link"}