{"product_id":"erp-replacement-flame-sensor-fls51m14","title":"Lennox Furnace Flame Sensor FLS51M14 51M14 43K88","description":"\u003ch2\u003eLennox Furnace Flame Sensor — FLS51M14\u003c\/h2\u003e\u003cp\u003eThe ERP FLS51M14 is an aftermarket flame sensor for selected Lennox furnaces with hot-surface ignition systems. It helps the furnace control verify flame during burner operation. A failed, contaminated, or damaged sensor can contribute to ignition lockout, no-heat symptoms, or repeated start attempts. Match the original sensor, angle, length, terminal, ignition system, and complete furnace model before ordering.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eERP aftermarket replacement:\u003c\/strong\u003e This part is not a genuine Lennox part and is not affiliated with Lennox.\u003c\/p\u003e\u003ch3\u003eCompatible Part Numbers\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eFLS51M14\u003c\/li\u003e\n\u003cli\u003e51M14\u003c\/li\u003e\n\u003cli\u003e43K88\u003c\/li\u003e\n\u003cli\u003ePSE-L58-SB\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eKey Features\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDirect replacement:\u003c\/strong\u003e Replaces a compatible HSI furnace flame sensor when specifications and fit match.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrimary function:\u003c\/strong\u003e Helps the furnace control verify burner flame.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eKey benefit:\u003c\/strong\u003e Helps restore reliable flame proving and heating operation when the original sensor fails.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConstruction and fit:\u003c\/strong\u003e Alumina ceramic insulator, Kanthal flame rod material, 90-degree offset, 2.5-inch flange-to-tip length, and 1\/4-inch quick-disconnect termination.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFixes These Symptoms\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eFurnace ignites but shuts down shortly afterward\u003c\/li\u003e\n\u003cli\u003eFurnace enters ignition lockout or produces no heat\u003c\/li\u003e\n\u003cli\u003eRepeated ignition attempts or short cycling\u003c\/li\u003e\n\u003cli\u003eFlame sensor is damaged, contaminated, or corroded\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eCompatible Brands\u003c\/h3\u003e\u003cul\u003e\u003cli\u003eLennox\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eCompatible Models\u003c\/h3\u003e\u003cp\u003eFits various models. Please verify compatibility with us before ordering.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eAlways verify your model number before ordering.\u003c\/strong\u003e Match the complete furnace model, original part number, ignition system, sensor angle, length, and terminal. Gas and combustion service must be performed by a qualified HVAC technician.\u003c\/p\u003e","brand":"ERP","offers":[{"title":"Default Title","offer_id":50280951709939,"sku":"ERFLS51M14","price":7.25,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0774\/7859\/2755\/files\/FLS51M14.jpg?v=1788433128","url":"https:\/\/authenticapplianceparts.com\/products\/erp-replacement-flame-sensor-fls51m14","provider":"Authentic Appliance Parts","version":"1.0","type":"link"}