{"product_id":"oem-goodman-170-f-primary-limit-switch-for-ams80904bxaa-b1370188","title":"OEM Goodman 170°F Primary Limit Switch for AMS80904BXAA — B1370188","description":"\u003ch2\u003eGoodman B1370188 170°F Primary Limit Switch\u003c\/h2\u003e\u003cp\u003eThe \u003cstrong\u003eB1370188\u003c\/strong\u003e is a genuine Goodman primary high-limit switch rated at \u003cstrong\u003e170°F\u003c\/strong\u003e, designed as an exact-fit replacement for the \u003cstrong\u003eGoodman AMS80904BXAA\u003c\/strong\u003e gas furnace. The primary limit is the furnace's main overheat protection: it monitors heat-exchanger temperature and shuts off the burners if the plenum gets too hot, typically from low airflow. A failed primary limit is a frequent cause of short-cycling or a furnace that won't fire.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eTrip temperature: 170°F\u003c\/li\u003e\n\u003cli\u003eType: Primary high-limit switch (auto-reset)\u003c\/li\u003e\n\u003cli\u003eFunction: Normally closed, opens on overheat\u003c\/li\u003e\n\u003cli\u003eFit: Direct OEM replacement for AMS80904BXAA\u003c\/li\u003e\n\u003cli\u003eOEM Part Number: B1370188\u003c\/li\u003e\n\u003cli\u003eBrand: Goodman \/ Amana\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eOEM vs. Generic\u003c\/h3\u003e\u003cp\u003eThe primary limit governs safe operating temperature, so an exact calibration matters. The genuine \u003cstrong\u003eOEM Goodman\u003c\/strong\u003e switch is factory-set to the correct 170°F trip point and mounting flange. Generic substitutes may not match the trip temperature or bracket, risking nuisance shutdowns or overheating — we recommend OEM for this control.\u003c\/p\u003e\u003ch3\u003eInstall Difficulty\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eEasy\u003c\/strong\u003e — unplug the two spade terminals, remove the mounting screws, and fit the replacement in the same position. About 15 minutes for a typical homeowner. Always disconnect power and gas first, and never jump out a limit switch.\u003c\/p\u003e","brand":"Goodman","offers":[{"title":"Default Title","offer_id":63057706942835,"sku":"GOODMAN-7093","price":12.95,"currency_code":"USD","in_stock":true}],"url":"https:\/\/nationalhvacparts.com\/products\/oem-goodman-170-f-primary-limit-switch-for-ams80904bxaa-b1370188","provider":"National HVAC Parts","version":"1.0","type":"link"}