{"product_id":"oem-lennox-flame-sensor-with-lead-27j02","title":"OEM Lennox Flame Sensor with Lead — 27J02","description":"\u003cp\u003eThe genuine OEM Lennox \u003cstrong\u003e27J02\u003c\/strong\u003e flame sensor with lead confirms the presence of a burner flame during ignition using flame rectification, signaling the control board that combustion is established. This proving function is essential for safe furnace operation, allowing the gas valve to stay open only when a flame is actually detected and shutting down the burners if it is not.\u003c\/p\u003e\u003cp\u003eA dirty, corroded, or failing flame sensor is one of the most common causes of intermittent heating. Typical symptoms include the furnace igniting and then shutting off after a few seconds, repeated ignition attempts, short cycling, or a hard lockout after several failed tries. Because the sensor is exposed to constant flame, its coating degrades over time and the microamp signal weakens.\u003c\/p\u003e\u003cp\u003eInstalling the OEM Lennox \u003cstrong\u003e27J02\u003c\/strong\u003e with its factory lead ensures the correct rod length, material, and connector fit for a strong, reliable flame signal. Generic sensors can produce weak or unstable readings that cause the same nuisance shutdowns you're trying to fix. The genuine part restores dependable ignition and safe operation. In stock and ships same day when ordered before 3PM CST.\u003c\/p\u003e","brand":"Lennox","offers":[{"title":"Default Title","offer_id":63081110700403,"sku":"LNX-27J02","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-27J02.jpg?v=1783761005","url":"https:\/\/nationalhvacparts.com\/products\/oem-lennox-flame-sensor-with-lead-27j02","provider":"National HVAC Parts","version":"1.0","type":"link"}