{"product_id":"87f16-furnace-primary-limit-switch-up-to-140f","title":"87F16 Furnace Primary Limit Switch up to 140°F - For Lennox Furnaces - Replaces 87F16 87F1601 L140-30F 36T01B3","description":"\u003ch2\u003e87F16 Furnace Primary Limit Switch up to 140°F\u003c\/h2\u003e\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003ePrimary high-limit safety control for forced-air furnaces\u003c\/li\u003e\n\u003cli\u003eActivates at a fixed temperature of 140°F (60°C) to prevent overheating\u003c\/li\u003e\n\u003cli\u003eAutomatically resets at 110°F (43°C)\u003c\/li\u003e\n\u003cli\u003eSwitch configuration: SPST (Single Pole, Single Throw), normally open contacts\u003c\/li\u003e\n\u003cli\u003eProbe insertion length: 3 inches\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eReplaces \/ Cross-Reference Part Numbers\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cmeta charset=\"utf-8\"\u003e87F16\u003c\/li\u003e\n\u003cli\u003e87F1601\u003c\/li\u003e\n\u003cli\u003eL140-30F\u003c\/li\u003e\n\u003cli\u003eL140F-40\u003c\/li\u003e\n\u003cli\u003e36T01B3\u003c\/li\u003e\n\u003cli\u003e42155\u003c\/li\u003e\n\u003cli\u003eA1247\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eCompatibility \u0026amp; Fitment\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eDesigned as a direct replacement for specific Lennox brand furnaces.\u003c\/li\u003e\n\u003cli\u003eVerify fitment by confirming the part number on your original switch or in your equipment's service manual.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhen to Replace\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eFurnace blower runs continuously after the heating cycle has stopped.\u003c\/li\u003e\n\u003cli\u003eHeating system short-cycles or shuts down prematurely.\u003c\/li\u003e\n\u003cli\u003eFurnace fails to produce heat or ignite the burners.\u003c\/li\u003e\n\u003cli\u003eControl board displays a fault code indicating an open limit switch.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eInstallation Tips\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eDisconnect all electrical power to the furnace before servicing.\u003c\/li\u003e\n\u003cli\u003eLocate the limit switch, typically mounted on the furnace plenum near the heat exchanger.\u003c\/li\u003e\n\u003cli\u003eNote wire connections before removing the old switch.\u003c\/li\u003e\n\u003cli\u003eInstall the new switch, secure it with the mounting screws, and reconnect the wires to the terminals.\u003c\/li\u003e\n\u003cli\u003eRestore power and test the furnace through a complete heating cycle to ensure proper operation.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"BlueStarsParts","offers":[{"title":"Default Title","offer_id":45844237353149,"sku":"AZ00638885","price":27.79,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2576\/7548\/files\/AZ00638885_1_0d1a3ffb-8997-4ab8-873f-5f1bd756a87f.jpg?v=1762245684","url":"https:\/\/bluestarspartstrend.com\/products\/87f16-furnace-primary-limit-switch-up-to-140f","provider":"BlueStars Parts","version":"1.0","type":"link"}