{"product_id":"oem-goodman-120-f-auxiliary-limit-switch-for-ams80904bxa-b1370155","title":"OEM Goodman 120°F Auxiliary Limit Switch for AMS80904BXA — B1370155","description":"\u003cp\u003eThe Goodman \u003cstrong\u003eB1370155\u003c\/strong\u003e is a genuine 120°F auxiliary limit switch for \u003cstrong\u003eAMS80904BXA\u003c\/strong\u003e furnaces and compatible Goodman\/Amana models. Typically mounted on the blower deck or coil housing, this secondary high-limit senses abnormal heat buildup — such as from a failing blower or restricted return air — and cuts the burner circuit to prevent overheating. It supplements the main high-limit for an added layer of safe operation.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eType: Auxiliary high-limit switch\u003c\/li\u003e\n\u003cli\u003eTrip temperature: 120°F\u003c\/li\u003e\n\u003cli\u003eAction: Opens on temperature rise (auto reset)\u003c\/li\u003e\n\u003cli\u003eFits: AMS80904BXA and compatible Goodman\/Amana furnaces\u003c\/li\u003e\n\u003cli\u003eTerminals: Standard 1\/4 inch quick-connect\u003c\/li\u003e\n\u003cli\u003eOEM Part: B1370155\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eOEM vs. Generic\u003c\/h3\u003e\u003cp\u003eAs a temperature-calibrated safety device, the genuine Goodman switch trips at the precise 120°F setpoint the furnace was engineered around. Off-spec generic limits can nuisance-trip on normal cycles or fail to protect against real overheating. Match the OEM temperature rating exactly — do not substitute. OEM is the recommended choice.\u003c\/p\u003e\u003ch3\u003eInstall Difficulty\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eEasy (2\/5).\u003c\/strong\u003e Disconnect power, photograph the wiring, remove the mounting screws, and install the replacement in the same location and orientation with firm surface contact. If the switch was tripping, check blower operation and airflow (dirty filter, closed registers, weak motor) before restoring heat.\u003c\/p\u003e","brand":"Goodman","offers":[{"title":"Default Title","offer_id":63057706123635,"sku":"GOODMAN-7079","price":11.96,"currency_code":"USD","in_stock":true}],"url":"https:\/\/nationalhvacparts.com\/products\/oem-goodman-120-f-auxiliary-limit-switch-for-ams80904bxa-b1370155","provider":"National HVAC Parts","version":"1.0","type":"link"}