{"product_id":"oem-lennox-flame-rollout-limit-switch-98m86","title":"OEM Lennox Flame Rollout Limit Switch — 98M86","description":"\u003cp\u003eThe genuine OEM Lennox \u003cstrong\u003e98M86\u003c\/strong\u003e flame rollout switch is a manual-reset safety limit that protects your Lennox furnace from dangerous overheating conditions. Mounted near the burner assembly, it monitors for flame rollout — a condition where flames escape the combustion chamber, typically caused by a blocked heat exchanger, restricted flue, or failing inducer. If it senses excessive heat, it instantly interrupts power to the gas valve, shutting the furnace down before damage or a hazard can occur.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCommon failure symptoms:\u003c\/strong\u003e A tripped or failed rollout switch will cause the furnace to stop producing heat entirely. You may find the furnace lighting briefly then shutting off, a switch that won't reset, or repeated lockouts. Because this switch responds to an underlying combustion or airflow problem, a persistent trip should always prompt inspection of the heat exchanger and venting.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhy OEM matters:\u003c\/strong\u003e This is a safety-critical component with a factory-specified trip temperature. The OEM \u003cstrong\u003e98M86\u003c\/strong\u003e is calibrated to your Lennox furnace's exact design limits and mounts precisely where the original sits. Substituting a generic switch with the wrong temperature rating can either nuisance-trip or, worse, fail to protect the system. Insist on the genuine Lennox part.\u003c\/p\u003e","brand":"Lennox","offers":[{"title":"Default Title","offer_id":63081090449779,"sku":"LNX-98M86","price":19.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-limit-switch-rollout-LNX-98M86.jpg?v=1783760957","url":"https:\/\/nationalhvacparts.com\/products\/oem-lennox-flame-rollout-limit-switch-98m86","provider":"National HVAC Parts","version":"1.0","type":"link"}