{"product_id":"oem-goodman-150f-primary-limit-switch-for-ams950704cxab-20162903","title":"OEM Goodman 150F Primary Limit Switch for AMS950704CXAB — 20162903","description":"\u003ch2\u003eGoodman 20162903 Primary Limit Switch (150°F)\u003c\/h2\u003e\u003cp\u003eThis genuine OEM Goodman 20162903 primary limit switch is the 150°F high-limit safety control for the Goodman\/Amana \u003cstrong\u003eAMS950704CXAB\u003c\/strong\u003e gas furnace and compatible models. Mounted on the heat-exchanger bulkhead, it monitors supply-air temperature and de-energizes the burners if the furnace overheats — typically from restricted airflow such as a dirty filter, blocked return, or failed blower. Its auto-reset action closes again once temperature returns to a safe range.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eType: Primary high-limit switch, auto reset\u003c\/li\u003e\n\u003cli\u003eTrip point: 150°F (opens on rise)\u003c\/li\u003e\n\u003cli\u003eApplication: Heat-exchanger \/ supply-air over-temperature protection\u003c\/li\u003e\n\u003cli\u003eFits: Goodman \u0026amp; Amana AMS950704CXAB and related furnaces\u003c\/li\u003e\n\u003cli\u003eContacts: Normally closed, opens above setpoint\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eOEM vs. Generic\u003c\/h3\u003e\u003cp\u003eThe OEM 20162903 is factory-calibrated to the correct 150°F setpoint and matches the original mounting flange and insertion depth. Generic limit switches often differ in trip temperature or probe length, causing short-cycling or unsafe operation. For a primary safety limit, OEM calibration matters.\u003c\/p\u003e\u003ch3\u003eInstall Difficulty\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eEasy (1\/5).\u003c\/strong\u003e Turn off power and gas, remove two mounting screws and two spade terminals, and install the replacement in the same orientation. About 15 minutes. If the furnace keeps hitting the limit, check the filter and blower before assuming the switch is faulty.\u003c\/p\u003e","brand":"Goodman","offers":[{"title":"Default Title","offer_id":63057752883571,"sku":"GOODMAN-20162903","price":22.95,"currency_code":"USD","in_stock":true}],"url":"https:\/\/nationalhvacparts.com\/products\/oem-goodman-150f-primary-limit-switch-for-ams950704cxab-20162903","provider":"National HVAC Parts","version":"1.0","type":"link"}