{"product_id":"3l01-170-copeland-comfort-control-white-rodgers-l170-40f","title":"3L01-170 Copeland Comfort Control (White Rodgers) L170-40F","description":"\u003ch1\u003e3L01-170 Copeland Comfort Control (White Rodgers) L170-40F \u003c\/h1\u003e\n\u003cstyle\u003e\na {\n    text-decoration: none;\n    color: #464feb;\n}\ntr th, tr td {\n    border: 1px solid #e6e6e6;\n}\ntr th {\n    background-color: #f5f5f5;\n}\n\u003c\/style\u003e\n\u003cdiv\u003e\n\u003cp\u003eThe \u003cstrong\u003e3L01-170 Snap Disc Limit Switch (White-Rodgers \/ Copeland Comfort Control)\u003c\/strong\u003e is an automatic reset temperature safety control designed to protect HVAC and heating equipment from excessive operating temperatures. Featuring a \u003cstrong\u003e170°F fixed cut-out temperature\u003c\/strong\u003e and \u003cstrong\u003e130°F fixed cut-in temperature\u003c\/strong\u003e, this \u003cstrong\u003eopen-on-rise\u003c\/strong\u003e limit switch interrupts the electrical circuit when temperatures exceed safe limits and automatically resets once temperatures return to normal operating conditions.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eCross-Reference\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e3L01-170\u003c\/li\u003e\n\u003cli\u003e3L01170\u003c\/li\u003e\n\u003cli\u003eL170-40F\u003c\/li\u003e\n\u003cli\u003e60T11-610012\u003c\/li\u003e\n\u003cli\u003eWhite-Rodgers 3L01-170\u003c\/li\u003e\n\u003cli\u003eCopeland Comfort Control 3L01-170\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eDirect OEM\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eWhite-Rodgers 3L01-170\u003c\/strong\u003e\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eCompatible Brands\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eWhite-Rodgers\u003c\/li\u003e\n\u003cli\u003eEmerson\u003c\/li\u003e\n\u003cli\u003eCopeland\u003c\/li\u003e\n\u003cli\u003eYork\u003c\/li\u003e\n\u003cli\u003eColeman\u003c\/li\u003e\n\u003cli\u003eLuxaire\u003c\/li\u003e\n\u003cli\u003eGoodman\u003c\/li\u003e\n\u003cli\u003eUniversal HVAC Applications\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eApplication\u003c\/h3\u003e\n\u003cp\u003eUsed in heating and HVAC equipment to:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003ePrevent overheating of equipment components\u003c\/li\u003e\n\u003cli\u003eOpen the control circuit at 170°F\u003c\/li\u003e\n\u003cli\u003eAutomatically reset at 130°F\u003c\/li\u003e\n\u003cli\u003eProtect heat exchangers, motors, and control circuits\u003c\/li\u003e\n\u003cli\u003eMaintain safe operating temperatures\u003c\/li\u003e\n\u003cli\u003eProvide automatic temperature-based safety protection\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eRelated Components\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eSnap Disc Limit Switch\u003c\/li\u003e\n\u003cli\u003eHigh Limit Control\u003c\/li\u003e\n\u003cli\u003eFan Switch\u003c\/li\u003e\n\u003cli\u003eFan \u0026amp; Limit Control\u003c\/li\u003e\n\u003cli\u003eBlower Relay\u003c\/li\u003e\n\u003cli\u003eFurnace Control Board\u003c\/li\u003e\n\u003cli\u003eTransformer\u003c\/li\u003e\n\u003cli\u003eTemperature Sensor\u003c\/li\u003e\n\u003cli\u003eContactor\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eTechnician Notes\u003c\/h3\u003e\n\u003cp\u003eThe 3L01-170 is an \u003cstrong\u003eautomatic reset, open-on-rise snap disc limit switch\u003c\/strong\u003e. Under normal conditions, the contacts remain closed. When the sensing surface reaches \u003cstrong\u003e170°F\u003c\/strong\u003e, the contacts open to interrupt the circuit and protect equipment from overheating. The switch automatically resets when temperature drops to approximately \u003cstrong\u003e130°F\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eRepeated limit trips are usually caused by restricted airflow, dirty coils, plugged filters, improper blower operation, blocked vents, or excessive heat buildup. Always correct the root cause before replacing the switch.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eCommon Symptoms of Failure\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eEquipment shuts down on high temperature\u003c\/li\u003e\n\u003cli\u003eOpen limit fault code\u003c\/li\u003e\n\u003cli\u003eIntermittent furnace operation\u003c\/li\u003e\n\u003cli\u003eHeating system lockout\u003c\/li\u003e\n\u003cli\u003eNo continuity through switch contacts\u003c\/li\u003e\n\u003cli\u003eRepeated nuisance shutdowns\u003c\/li\u003e\n\u003cli\u003eReduced heating performance\u003c\/li\u003e\n\u003cli\u003eFailure to restart after an overheat condition\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eInstallation Tips\u003c\/h3\u003e\n\u003col\u003e\n\u003cli\u003eDisconnect power before servicing.\u003c\/li\u003e\n\u003cli\u003eMatch temperature ratings exactly to the original switch.\u003c\/li\u003e\n\u003cli\u003eVerify switch action is \"Open on Rise.\"\u003c\/li\u003e\n\u003cli\u003eMount securely on the original sensing surface.\u003c\/li\u003e\n\u003cli\u003eInspect wiring terminals for heat damage or corrosion.\u003c\/li\u003e\n\u003cli\u003eCheck airflow and blower performance before replacement.\u003c\/li\u003e\n\u003cli\u003eConfirm continuity and proper operation after installation.\u003c\/li\u003e\n\u003cli\u003eTest the unit through a complete heating cycle.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003chr\u003e\n\u003ch3\u003eRecommended Inspection Items\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eBlower motor operation\u003c\/li\u003e\n\u003cli\u003eAir filter condition\u003c\/li\u003e\n\u003cli\u003eHeat exchanger temperature\u003c\/li\u003e\n\u003cli\u003eSupply and return airflow\u003c\/li\u003e\n\u003cli\u003eEvaporator coil cleanliness\u003c\/li\u003e\n\u003cli\u003eWiring terminals\u003c\/li\u003e\n\u003cli\u003eFurnace control board\u003c\/li\u003e\n\u003cli\u003eVenting system condition\u003c\/li\u003e\n\u003cli\u003eTemperature rise across equipment\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cp\u003e\u003cspan\u003eControls, Temperature, 130 degrees F Fixed Cut-in Temperature, 170 degrees F Fixed Cut-out Temperature, Open on Rise Switch Action, Snap Disc Auto Reset Limit Switch (60T11-610012)\u003c\/span\u003e\u003c\/p\u003e","brand":"Neuco","offers":[{"title":"Default Title","offer_id":45886105288770,"sku":"3L01-170","price":14.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1071\/8320\/files\/Screenshot2026-11-02190226.png?v=1793671360","url":"https:\/\/hvacpartstore.com\/products\/3l01-170-copeland-comfort-control-white-rodgers-l170-40f","provider":"HVACpartstore","version":"1.0","type":"link"}