{"product_id":"oem-goodman-primary-high-limit-switch-for-ams80403axab-20162901","title":"OEM Goodman Primary High Limit Switch for AMS80403AXAB — 20162901","description":"\u003cp\u003eThe Goodman \u003cstrong\u003e20162901\u003c\/strong\u003e is a genuine OEM primary high limit switch for the \u003cstrong\u003eAMS80403AXAB\u003c\/strong\u003e 80,000 BTU, 80% AFUE gas furnace and compatible AMS80 series models. Mounted on the heat exchanger or supply plenum, this control monitors supply-air temperature and shuts off the burners if the furnace overheats — typically from restricted airflow such as a dirty filter or blower failure. It protects the heat exchanger from cracking and prevents unsafe operating temperatures.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003ePart type: Primary high limit \/ auto-reset temperature switch\u003c\/li\u003e\n\u003cli\u003ePart number: 20162901\u003c\/li\u003e\n\u003cli\u003eFits model: AMS80403AXAB and related AMS80 series furnaces\u003c\/li\u003e\n\u003cli\u003eFunction: Opens on temperature rise, closes on cool-down (auto reset)\u003c\/li\u003e\n\u003cli\u003eType: Normally-closed thermal limit control\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eOEM vs. Generic\u003c\/h3\u003e\u003cp\u003eThis OEM limit is factory-calibrated to Goodman's exact trip temperature and mounting flange for this furnace. Generic limits with different set points can short-cycle the burners or fail to protect the heat exchanger. For a primary safety control, the OEM part is the reliable choice.\u003c\/p\u003e\u003ch3\u003eInstallation Difficulty\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eEasy (1\/5).\u003c\/strong\u003e Two-wire, screw-mounted replacement. Disconnect power before servicing. If the limit was tripping, correct the underlying airflow problem — replace the filter and verify blower operation — and consider a licensed HVAC technician if the fault persists.\u003c\/p\u003e","brand":"Goodman","offers":[{"title":"Default Title","offer_id":63057683218803,"sku":"GOODMAN-6709","price":34.95,"currency_code":"USD","in_stock":true}],"url":"https:\/\/nationalhvacparts.com\/products\/oem-goodman-primary-high-limit-switch-for-ams80403axab-20162901","provider":"National HVAC Parts","version":"1.0","type":"link"}