{"product_id":"goodman-b1370187-primary-limit-switch-auto-130-160-f-3-lg-specs","title":"Goodman B1370187 Primary Limit Switch Auto 130-160°F 3\" LG Specs","description":"\u003ch1\u003eGoodman B1370187 Primary Limit Switch Auto 130-160°F 3\" LG Specs\u003c\/h1\u003e\n\u003cp\u003eThe \u003cstrong\u003eGoodman B1370187 Primary Limit Switch\u003c\/strong\u003e serves as the critical \"safety brain\" of your furnace's heat exchanger assembly. Designed specifically for Goodman, Amana, and Janitrol gas furnace series, this component is responsible for monitoring the internal plenum temperature to prevent hazardous overheating. By acting as a normally closed thermal gate, it ensures that if airflow is restricted—due to a clogged filter or a failing blower motor—the system will safely interrupt the heating cycle before damage occurs. As a Genuine OEM part, it is engineered to handle the high-static environments of modern high-efficiency furnaces with total precision.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eKey Features:\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrecision Safety Monitoring:\u003c\/strong\u003e Calibrated to trigger a system shutdown at 160°F and automatically reset at 130°F, ensuring the \u003cstrong\u003eB1370187\u003c\/strong\u003e protects your heat exchanger from stress fractures and safety hazards.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGenuine OEM Fitment:\u003c\/strong\u003e This factory-authorized part eliminates the mounting and calibration issues common with universal \"truck stock\" switches, ensuring the 3-inch probe sits perfectly in the airflow stream.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFixes Relay and Noise Issues:\u003c\/strong\u003e Replacing a \"lazy\" or worn limit switch resolves common relay clicking noises and short-cycling issues that cause uneven home heating and excessive wear on the control board.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeavy-Duty Construction:\u003c\/strong\u003e Built with a high-grade pressed steel enclosure for superior durability against the constant thermal expansion and contraction cycles of the HVAC cabinet.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSafety Integration:\u003c\/strong\u003e Seamlessly integrates with the furnace's integrated ignition control board to provide real-time thermal protection and highly accurate diagnostic fault code reporting.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\u003cstrong\u003eProduct Details:\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Goodman \/ Amana\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer:\u003c\/strong\u003e Daikin Comfort Technologies\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart #:\u003c\/strong\u003e B1370187\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.15 lbs\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVoltage:\u003c\/strong\u003e 120V \/ 24V Compatible (13.3 Amps @ 120VAC)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTemperature Open:\u003c\/strong\u003e 160°F\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTemperature Close:\u003c\/strong\u003e 130°F\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProbe Length:\u003c\/strong\u003e 3.0 Inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIgnition Type:\u003c\/strong\u003e Compatible with HSI (Hot Surface) and Spark Ignition systems\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eContact Type:\u003c\/strong\u003e Normally Closed (Opens on Temperature Rise)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\u003cstrong\u003e🛠️ HVAC Depot Pro Tip:\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003e\"Take a Picture First\"\u003c\/strong\u003e — Before removing the old switch, photograph the wiring orientation to ensure the 1\/4\" quick-connect terminals are returned to the correct poles. \u003cstrong\u003eDiagnostic Check:\u003c\/strong\u003e If your furnace is short-cycling, check your air filters and blower wheel for dust buildup. A \"tripped\" limit switch is often the first sign of restricted airflow. Always verify the circuit is closed at room temperature using a multimeter before finishing the install.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eCross-Reference:\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSuperseded\/Legacy:\u003c\/strong\u003e B13701-87, B1370187S, 1370187, 10123529\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrawing Numbers:\u003c\/strong\u003e 60T81, 313745, 167315\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWhite-Rodgers\/Emerson Equivalents:\u003c\/strong\u003e 3L11-160, 60T Series\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\u003cstrong\u003eModel Compatibility:\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eGMT Series\u003c\/strong\u003e (Suffixes: 045-3, 070-3, 070-4, 090-3, 090-4, 090-5, 115-5, 135-5, 140-5)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGMNT Series\u003c\/strong\u003e (Suffixes: 040-3, 060-3, 080-4, 100-4, 120-5)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGMS8 Series\u003c\/strong\u003e (Suffixes: 0453AA, 0703AA, 0904AA, 1155CA)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGDS8 Series\u003c\/strong\u003e (Suffixes: 0453AA, 0703AA, 0904AA, 1155CA)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePGC Series\u003c\/strong\u003e (Suffixes: 103060, 103080, 104100, 105120)\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Goodman","offers":[{"title":"Default Title","offer_id":52235451761003,"sku":"193031151732","price":19.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0922\/9683\/9531\/files\/IMG-B1370155.webp?v=1753871202","url":"https:\/\/tophvacparts.com\/products\/goodman-b1370187-primary-limit-switch-auto-130-160-f-3-lg-specs","provider":"HVAC Parts and Equipment Depot Open To Homeowners and Contractors","version":"1.0","type":"link"}