{"product_id":"oem-lennox-control-board-71m28","title":"OEM Lennox Control Board — 71M28","description":"\u003cp\u003eThe genuine OEM Lennox \u003cstrong\u003e71M28\u003c\/strong\u003e integrated control board is the brain of your Lennox furnace, sequencing the ignition, gas valve, inducer, and blower while monitoring safety switches and flame sense. It manages timing and diagnostics to keep every heating cycle safe and efficient, and its onboard LED reports fault codes for faster troubleshooting.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCommon failure symptoms:\u003c\/strong\u003e the furnace won't start, no blower or inducer operation, blank or erratic diagnostic LED, intermittent lockouts, or components running when they shouldn't. Power surges, moisture, and cracked solder joints are frequent causes of board failure.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhy OEM matters:\u003c\/strong\u003e the control algorithm, relay ratings, and connector pinout are programmed specifically for your Lennox model's ignition sequence and safety logic. The OEM Lennox \u003cstrong\u003e71M28\u003c\/strong\u003e ensures full compatibility and correct timing, while substitute boards can mis-sequence components, throw false codes, or fail to communicate with your system.\u003c\/p\u003e","brand":"Lennox","offers":[{"title":"Default Title","offer_id":63081097101683,"sku":"LNX-71M28","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-71M28.jpg?v=1783759976","url":"https:\/\/nationalhvacparts.com\/products\/oem-lennox-control-board-71m28","provider":"National HVAC Parts","version":"1.0","type":"link"}