{"product_id":"oem-lennox-limit-switch-w-manual-reset-28g46","title":"OEM Lennox Limit Switch w\/ Manual Reset — 28G46","description":"\u003cp\u003eThe genuine OEM Lennox \u003cstrong\u003e28G46\u003c\/strong\u003e limit switch with manual reset is a critical safety control that monitors the temperature inside your furnace. If the heat exchanger area exceeds a safe threshold—typically due to restricted airflow—the switch opens and shuts off the burners to prevent dangerous overheating. Its manual reset design requires a deliberate button press to restore operation after a trip, alerting you that an underlying problem occurred.\u003c\/p\u003e\u003cp\u003eCommon signs of a failing limit switch include a furnace that repeatedly trips off on high limit, burners that short-cycle, or a unit that won't restart even after cooling down. Dirty filters, blocked ducts, or a failing blower can cause nuisance trips, while a worn switch may fail open and prevent heating altogether.\u003c\/p\u003e\u003cp\u003eUsing the OEM Lennox \u003cstrong\u003e28G46\u003c\/strong\u003e ensures the exact temperature trip point and reset behavior your furnace was designed for. Because this is a safety-rated component, generic substitutes with the wrong setpoint can compromise protection or allow unsafe operation. A factory-matched limit switch keeps your Lennox equipment protected and reliable.\u003c\/p\u003e","brand":"Lennox","offers":[{"title":"Default Title","offer_id":63081109979507,"sku":"LNX-28G46","price":19.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-limit-switch-manual-reset-LNX-28G46.jpg?v=1783762442","url":"https:\/\/nationalhvacparts.com\/products\/oem-lennox-limit-switch-w-manual-reset-28g46","provider":"National HVAC Parts","version":"1.0","type":"link"}