{"product_id":"oem-lennox-flame-rollout-switch-31j96","title":"OEM Lennox Flame Rollout Switch — 31J96","description":"\u003cp\u003eThe genuine OEM Lennox \u003cstrong\u003e31J96\u003c\/strong\u003e flame rollout switch is a thermally activated safety limit switch that guards against dangerous flame rollout in your Lennox furnace. Mounted near the burner assembly, it senses abnormal heat caused by flames escaping the heat exchanger — often the result of a blocked flue, cracked heat exchanger, or poor combustion — and immediately shuts down the furnace to prevent damage or fire.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCommon failure symptoms:\u003c\/strong\u003e A tripped or failed \u003cstrong\u003e31J96\u003c\/strong\u003e typically causes the furnace to stop heating, lock out after a short run, or refuse to ignite at all. A switch that has opened due to a genuine fault will not reset until the underlying cause is corrected, while a defective switch may trip nuisance shutdowns even when combustion is normal.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhy OEM matters:\u003c\/strong\u003e Flame rollout switches are calibrated to trip at a precise temperature threshold. An incorrect or off-spec switch can fail to protect the equipment — or trip prematurely and leave you without heat. The factory \u003cstrong\u003e31J96\u003c\/strong\u003e is built to Lennox's exact temperature rating and mounting specification, ensuring dependable safety response and warranty compliance. For a life-safety device, only genuine OEM will do.\u003c\/p\u003e","brand":"Lennox","offers":[{"title":"Default Title","offer_id":63081109291379,"sku":"LNX-31J96","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-31J96.jpg?v=1783760971","url":"https:\/\/nationalhvacparts.com\/products\/oem-lennox-flame-rollout-switch-31j96","provider":"National HVAC Parts","version":"1.0","type":"link"}