{"product_id":"oem-goodman-120f-auxiliary-limit-switch-for-amh80904bnaa-b1370155","title":"OEM Goodman 120F Auxiliary Limit Switch for AMH80904BNAA — B1370155","description":"\u003cp\u003eThe \u003cstrong\u003eGoodman B1370155 Auxiliary Limit Switch\u003c\/strong\u003e is a genuine OEM 120°F overheat safety control for the \u003cstrong\u003eAMH80904BNAA\u003c\/strong\u003e furnace and compatible Goodman and Amana models. Typically mounted on the blower deck or heat-exchanger area, this auxiliary limit opens the control circuit if temperatures rise too high — usually from restricted airflow, a dirty filter, or a failed blower — shutting down heating to prevent damage to the furnace and duct system. It works alongside the primary high-limit for layered overheat protection.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e B1370155\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTrip Temperature:\u003c\/strong\u003e 120°F (auxiliary limit)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Auxiliary high-limit safety switch\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFits Model:\u003c\/strong\u003e AMH80904BNAA\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Goodman \/ Amana (OEM)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFunction:\u003c\/strong\u003e Normally closed; opens on over-temperature\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eOEM vs. Generic\u003c\/h3\u003e\u003cp\u003eThe genuine B1370155 is factory-set to the correct 120°F trip point with the proper mounting and terminals for your furnace. Because it is a safety limit, a generic switch with the wrong setpoint can cause nuisance shutdowns or, worse, fail to protect against overheating. OEM ensures reliable, code-correct operation.\u003c\/p\u003e\u003ch3\u003eInstallation\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eDifficulty: Easy (2 of 5).\u003c\/strong\u003e Cut power, disconnect the terminals, remove the mounting screws, and install the new switch in the identical location and orientation. If it had tripped, inspect the filter and blower for airflow restrictions before restoring heat.\u003c\/p\u003e","brand":"Goodman","offers":[{"title":"Default Title","offer_id":63057631969651,"sku":"GOODMAN-5774","price":11.96,"currency_code":"USD","in_stock":true}],"url":"https:\/\/nationalhvacparts.com\/products\/oem-goodman-120f-auxiliary-limit-switch-for-amh80904bnaa-b1370155","provider":"National HVAC Parts","version":"1.0","type":"link"}