{"product_id":"oem-goodman-primary-limit-switch-for-ams80403axaa-20162901","title":"OEM Goodman Primary Limit Switch for AMS80403AXAA — 20162901","description":"\u003cp\u003eThe \u003cstrong\u003eGoodman 20162901 Primary Limit Switch\u003c\/strong\u003e is a genuine OEM high-temperature safety control for the \u003cstrong\u003eAMS80403AXAA\u003c\/strong\u003e gas furnace and related Goodman\/Amana models. Mounted on the heat exchanger bulkhead, it opens the gas\/ignition circuit when supply-air temperature exceeds a safe threshold — typically from restricted airflow, a dirty filter, or a failing blower — and auto-resets once temperatures normalize.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eReset Type:\u003c\/strong\u003e Automatic (snap-disc)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFunction:\u003c\/strong\u003e Primary high-limit temperature cutout\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTerminals:\u003c\/strong\u003e 1\/4 in. quick-connect spades\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMounting:\u003c\/strong\u003e Bulkhead flange, factory temperature setpoint\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eApplication:\u003c\/strong\u003e 80% AFUE gas furnaces\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eOEM vs. Generic\u003c\/h3\u003e\u003cp\u003eThe \u003cstrong\u003eOEM 20162901\u003c\/strong\u003e ships with Goodman's exact temperature calibration and flange geometry for correct heat-exchanger protection and warranty compliance. Our \u003cstrong\u003eGeneric equivalent\u003c\/strong\u003e matches the trip temperature, insertion depth, and mounting pattern at a lower price for out-of-warranty repairs.\u003c\/p\u003e\u003ch3\u003eInstallation Difficulty\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eEasy (2\/5).\u003c\/strong\u003e A 10–15 minute job. Power down the furnace, remove the two mounting screws, transfer the spade connectors, and remount with the sensing element seated correctly in the airflow. If the limit tripped, correct any airflow restriction (filter, blower, ductwork) before restarting.\u003c\/p\u003e","brand":"Goodman","offers":[{"title":"Default Title","offer_id":63057682891123,"sku":"GOODMAN-6698","price":26.95,"currency_code":"USD","in_stock":true}],"url":"https:\/\/nationalhvacparts.com\/products\/oem-goodman-primary-limit-switch-for-ams80403axaa-20162901","provider":"National HVAC Parts","version":"1.0","type":"link"}