{"product_id":"oem-goodman-150-f-primary-limit-switch-for-ams81155cxaa-b1370198","title":"OEM Goodman 150°F Primary Limit Switch for AMS81155CXAA — B1370198","description":"\u003cp\u003eThe Goodman \u003cstrong\u003eB1370198 Primary Limit Switch\u003c\/strong\u003e is the genuine OEM \u003cstrong\u003e150°F auto-reset high-limit control\u003c\/strong\u003e for the \u003cstrong\u003eAMS81155CXAA\u003c\/strong\u003e 80% AFUE gas furnace and compatible Goodman\/Amana models. Mounted on the heat-exchanger\/plenum bulkhead, it is the main overheat safety: if supply-air temperature exceeds the set point due to restricted airflow, it opens to shut down the burners and protect the heat exchanger.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003ePart type: Primary high-limit switch\u003c\/li\u003e\n\u003cli\u003eTrip temperature: 150°F (open on rise)\u003c\/li\u003e\n\u003cli\u003eReset: Automatic\u003c\/li\u003e\n\u003cli\u003eOEM Part Number: B1370198\u003c\/li\u003e\n\u003cli\u003eFits model: AMS81155CXAA (80% AFUE furnace)\u003c\/li\u003e\n\u003cli\u003eBrand: Goodman \/ Amana (Daikin family)\u003c\/li\u003e\n\u003cli\u003eCategory: Limit Switch (Safety)\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eOEM vs. Generic\u003c\/h3\u003e\u003cp\u003eAs the furnace's main overheat protection, this control must trip at the exact factory temperature. OEM B1370198 delivers the correct 150°F set point, terminal style, and mounting footprint. Generic limits with the wrong rating can nuisance-trip or allow damaging overheat — OEM is strongly recommended for this safety device.\u003c\/p\u003e\u003ch3\u003eWhy Replace It\u003c\/h3\u003e\u003cp\u003eA failed primary limit produces repeated no-heat lockouts or, if stuck open, a total no-heat condition. Replace it with the genuine part and correct any airflow restriction (dirty filter, blocked ducts, weak blower) that may be causing high plenum temperatures.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eInstall difficulty: Easy.\u003c\/strong\u003e About 15–20 minutes: cut power, remove two mounting screws and the spade terminals, and fit the new switch to the same bracket. Verify normal heat cycling afterward.\u003c\/p\u003e","brand":"Goodman","offers":[{"title":"Default Title","offer_id":63057716773235,"sku":"GOODMAN-7199","price":12.95,"currency_code":"USD","in_stock":true}],"url":"https:\/\/nationalhvacparts.com\/products\/oem-goodman-150-f-primary-limit-switch-for-ams81155cxaa-b1370198","provider":"National HVAC Parts","version":"1.0","type":"link"}