{"product_id":"oem-goodman-250f-primary-main-limit-switch-for-ads81155cxa-furnace-b1370194-1","title":"OEM Goodman 250F Primary Main Limit Switch for ADS81155CXA Furnace — B1370194","description":"\u003cp\u003eThe Goodman \u003cstrong\u003eB1370194\u003c\/strong\u003e is a genuine OEM primary (main) high-limit switch designed for the \u003cstrong\u003eADS81155CXA\u003c\/strong\u003e gas furnace and compatible Goodman\/Amana units. Mounted on the heat-exchanger bulkhead, this 250°F auto-reset control protects the furnace from overheating caused by restricted airflow, a dirty filter, or blower failure by interrupting the gas valve circuit until temperatures return to a safe range.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eTrip temperature:\u003c\/strong\u003e 250°F (automatic reset)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFunction:\u003c\/strong\u003e Primary high-limit \/ overheat safety switch\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM part number:\u003c\/strong\u003e B1370194\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTerminals:\u003c\/strong\u003e 1\/4\" quick-connect spade\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEquipment:\u003c\/strong\u003e Goodman \/ Amana gas furnaces\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eOEM vs. Generic\u003c\/h3\u003e\u003cp\u003eFactory-calibrated to the furnace's exact limit temperature, this OEM switch ensures correct cycling and reliable overheat protection. Generic replacements often use approximate trip points that can shorten heat-exchanger life or trigger short-cycling. Choose OEM for proper fit and safety.\u003c\/p\u003e\u003ch3\u003eInstallation Difficulty\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eEasy to Moderate\u003c\/strong\u003e — usually held by two screws with two spade terminals. Power and gas must be off before replacement. If the original limit was tripping, diagnose the airflow cause before reinstalling.\u003c\/p\u003e","brand":"Goodman","offers":[{"title":"Default Title","offer_id":63057499455859,"sku":"GOODMAN-3136","price":56.34,"currency_code":"USD","in_stock":true}],"url":"https:\/\/nationalhvacparts.com\/products\/oem-goodman-250f-primary-main-limit-switch-for-ads81155cxa-furnace-b1370194-1","provider":"National HVAC Parts","version":"1.0","type":"link"}