{"product_id":"oem-goodman-200-f-primary-limit-switch-for-amh80905cnaa-b1370189","title":"OEM Goodman 200°F Primary Limit Switch for AMH80905CNAA — B1370189","description":"\u003cp\u003eThe \u003cstrong\u003eGoodman B1370189 Primary Limit Switch\u003c\/strong\u003e is the genuine OEM high-limit safety control for \u003cstrong\u003eAmana\/Goodman AMH80905CNAA\u003c\/strong\u003e 80% AFUE furnaces. Mounted on the heat exchanger bulkhead, this switch continuously monitors supply-air temperature and opens the gas valve circuit at roughly \u003cstrong\u003e200°F\u003c\/strong\u003e to prevent dangerous overheating caused by restricted airflow, a dirty filter, or blower failure.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM Part Number:\u003c\/strong\u003e B1370189\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Primary (main) high-limit switch\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOpen Temperature:\u003c\/strong\u003e 200°F, auto-reset\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eContacts:\u003c\/strong\u003e Normally closed (SPST)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFits:\u003c\/strong\u003e Goodman\/Amana AMH80905CNAA furnace\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Genuine Goodman OEM\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eOEM vs. Generic\u003c\/h3\u003e\u003cp\u003eThe \u003cstrong\u003eOEM Goodman\u003c\/strong\u003e primary limit guarantees factory trip-point accuracy and an exact bracket match, which matters most on a safety-critical control. The \u003cstrong\u003egeneric equivalent\u003c\/strong\u003e meets the same 200°F rating and electrical specs at a lower price for value-focused repairs, using a UL-recognized aftermarket switch.\u003c\/p\u003e\u003ch3\u003eSymptoms of Failure\u003c\/h3\u003e\u003cp\u003eA tripped or failed primary limit typically shows as the blower running continuously while the burners stay off, repeated limit lockouts, or no heat. Before replacing, confirm airflow is not restricted so the new switch isn't tripping legitimately.\u003c\/p\u003e\u003ch3\u003eInstallation Difficulty\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eEasy (1\/5)\u003c\/strong\u003e — Remove two screws, transfer the spade connectors, and remount. Cut power at the breaker first. Typical replacement time is 10–15 minutes.\u003c\/p\u003e","brand":"Goodman","offers":[{"title":"Default Title","offer_id":63057635344755,"sku":"GOODMAN-5851","price":9.95,"currency_code":"USD","in_stock":true}],"url":"https:\/\/nationalhvacparts.com\/products\/oem-goodman-200-f-primary-limit-switch-for-amh80905cnaa-b1370189","provider":"National HVAC Parts","version":"1.0","type":"link"}