{"product_id":"2845-3181-coleman-limit-switch-l170-30f","title":"2845-3181 Coleman limit switch L170-30F","description":"\u003ch1\u003e2845-3181 Coleman limit switch L170-30F \u003c\/h1\u003e\n\u003cp\u003e\u003cspan\u003eThe \u003cstrong\u003eColeman 2845-3181\u003c\/strong\u003e is an OEM \u003cstrong\u003eL170-30F high-limit switch\u003c\/strong\u003e used in Coleman, York, and Luxaire furnaces. This 3-inch insertion-depth safety switch opens at \u003cstrong\u003e170°F\u003c\/strong\u003e and automatically resets after a \u003cstrong\u003e30°F\u003c\/strong\u003e temperature drop, protecting the heat exchanger from overheating caused by airflow restriction, dirty filters, blower failure, or duct blockage.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThis limit is part of the Coleman\/York S1 series and is commonly replaced when the furnace short-cycles or shuts down prematurely. Using the OEM switch ensures correct temperature response and maintains furnace safety certification.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eColeman 2845-3181 limit switch. L170F-30. Thermodisc size 60T11-312623. Opens at 170 degrees, closes at 140 degrees Fahrenheit. Replaces 2845-318.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eTechnician Notes\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul role=\"list\"\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eTrip Temperature:\u003c\/strong\u003e 170°F\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eDifferential:\u003c\/strong\u003e 30°F (auto-reset)\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eLength:\u003c\/strong\u003e 3\" insertion\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eCircuit:\u003c\/strong\u003e SPST, normally closed\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eBrands:\u003c\/strong\u003e Coleman, York, Luxaire\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eFunction:\u003c\/strong\u003e Opens on temperature rise to protect heat exchanger\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eCommon Symptoms:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cul role=\"list\"\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eFurnace starts then shuts off\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eBlower runs continuously\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eShort-cycling\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eAlways diagnose airflow issues first:\u003c\/strong\u003e dirty filter, blower failure, blocked return, closed registers.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Quinn","offers":[{"title":"Default Title","offer_id":13173307651,"sku":"2845-3181","price":22.97,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1071\/8320\/products\/download-2020-09-24T192349.363.jpg?v=1739539026","url":"https:\/\/hvacpartstore.com\/products\/2845-3181-coleman-limit-switch-l170-30f","provider":"HVACpartstore","version":"1.0","type":"link"}