{"product_id":"nordyne-626465r-limit-switch","title":"Nordyne 626465R Limit Switch","description":"\u003cp\u003eThe \u003cstrong\u003eNordyne 626465R Limit Switch\u003c\/strong\u003e is a critical safety component engineered for precise thermal regulation within high-performance HVAC systems. This \u003cstrong\u003e225F M\/R limit switch\u003c\/strong\u003e is the direct \u003cstrong\u003eOEM replacement\u003c\/strong\u003e for the discontinued 626465 model, offering an updated design for superior reliability in \u003cstrong\u003eIntertherm, Miller, and Nordyne furnaces\u003c\/strong\u003e. As a manual reset (M\/R) device, it acts as a secondary failsafe, interrupting the heating circuit if the internal plenum temperature exceeds the 225-degree Fahrenheit threshold. This prevents potential heat exchanger damage and ensures the equipment operates within safe parameters. Field-proven on common platforms like the \u003cstrong\u003eCMF-80-PG\u003c\/strong\u003e and \u003cstrong\u003eCMF-100-PG\u003c\/strong\u003e series, this \u003cstrong\u003efurnace limit switch\u003c\/strong\u003e utilizes a rugged T-O-D 60T15 construction to handle the rapid thermal cycling typical of residential and light commercial heating applications.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eKey Benefits\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n    \u003cli\u003e\n\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Engineered as a direct drop-in for \u003cstrong\u003eNordyne 626465\u003c\/strong\u003e, ensuring seamless integration with existing wiring harnesses.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eSafety Compliance:\u003c\/strong\u003e Features a manual reset mechanism that requires a technician's inspection before restarting, effectively preventing \"nuisance\" cycling under unsafe conditions.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eReliability:\u003c\/strong\u003e The calibrated \u003cstrong\u003e225F temperature rating\u003c\/strong\u003e provides a consistent thermal cut-off point to protect sensitive furnace components from high-limit excursions.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eBroad Application:\u003c\/strong\u003e Compatible with a wide range of brands including Frigidaire, Maytag, Tappan, and Gibson furnaces.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003eCommon Questions\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow do I know if my manual reset limit switch is tripped?\u003c\/strong\u003e\u003cbr\u003e\nIf your furnace blower is running but the burner fails to ignite, the limit switch may have opened. Check for continuity; an open circuit on a manual reset switch like the \u003cstrong\u003e626465R\u003c\/strong\u003e indicates it has tripped due to an over-temperature event, often caused by restricted airflow or a failing blower motor.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eCan I use a 626465R to replace a standard auto-reset switch?\u003c\/strong\u003e\u003cbr\u003e\nNo. In professional HVACR applications, the manual reset functionality is often an auxiliary safety requirement. Always replace an OEM limit switch with the exact \u003cstrong\u003etechnical specifications\u003c\/strong\u003e and reset type specified by the manufacturer to maintain the system's safety listing.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat causes a 225F limit switch to fail repeatedly?\u003c\/strong\u003e\u003cbr\u003e\nRepeated tripping of the \u003cstrong\u003e626465R\u003c\/strong\u003e is typically symptomatic of underlying system issues such as a dirty air filter, blocked return air grilles, or improper manifold pressure. Chronic thermal stress can eventually weaken the internal bimetal disc, necessitating a replacement.\u003c\/p\u003e\n\n\u003cp\u003eDisclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.\u003c\/p\u003e","brand":"Nordyne","offers":[{"title":"Default Title","offer_id":35644383244,"sku":"626465R","price":25.28,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1838\/2375\/files\/Image_73a25589-ec46-43dc-aa26-e4f03305d42f.png?v=1790432561","url":"https:\/\/www.gsistore.com\/products\/nordyne-626465r-limit-switch","provider":"GSIstore","version":"1.0","type":"link"}