{"product_id":"oem-lennox-flame-sensor-32m86","title":"OEM Lennox Flame Sensor — 32M86","description":"\u003cp\u003eThe genuine OEM Lennox \u003cstrong\u003e32M86\u003c\/strong\u003e flame sensor is a critical safety component that confirms a flame is present after your burners ignite. Using flame rectification, it sends a small microamp signal back to the control board — if no flame is detected, the board immediately shuts off the gas valve to prevent unburned gas from accumulating in your Lennox furnace.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCommon failure symptoms:\u003c\/strong\u003e A dirty, corroded, or failing \u003cstrong\u003e32M86\u003c\/strong\u003e flame sensor typically causes the furnace to light and then shut down after a few seconds, often repeating in short-cycle bursts. You may also see ignition lockout after several failed attempts, intermittent no-heat calls, or a flame-sense fault code. Oxidation buildup on the rod weakens the signal until the board can no longer verify the flame.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhy OEM matters:\u003c\/strong\u003e The 32M86 is manufactured to Lennox's exact rod length, alloy, and mounting geometry so it sits at the correct position in the burner flame for a strong, stable microamp reading. Generic sensors often misread the signal, leading to nuisance lockouts. Choosing the factory-original part ensures dependable flame detection, safe operation, and full compatibility with your Lennox control board.\u003c\/p\u003e","brand":"Lennox","offers":[{"title":"Default Title","offer_id":63081109193075,"sku":"LNX-32M86","price":19.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-flame-sensor-straight-LNX-32M86.jpg?v=1783761021","url":"https:\/\/nationalhvacparts.com\/products\/oem-lennox-flame-sensor-32m86","provider":"National HVAC Parts","version":"1.0","type":"link"}