{"product_id":"oem-goodman-primary-high-limit-switch-for-amh80403axbd-20162901","title":"OEM Goodman Primary High-Limit Switch for AMH80403AXBD — 20162901","description":"\u003cp\u003eThe Goodman 20162901 is a genuine OEM primary high-limit switch for the AMH80403AXBD gas furnace and compatible Goodman\/Amana models. Mounted on the heat-exchanger bulkhead, this auto-reset control monitors supply-air temperature and interrupts the burner circuit if the furnace overheats — typically from restricted airflow, a dirty filter, a failed blower, or closed registers. It then resets automatically once temperatures fall back into range, protecting the heat exchanger from thermal damage.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart number:\u003c\/strong\u003e 20162901\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Primary high-limit switch (auto reset)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFunction:\u003c\/strong\u003e Opens burner circuit on high plenum temperature\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTerminals:\u003c\/strong\u003e 1\/4\" spade quick-connect\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMounting:\u003c\/strong\u003e Bracket \/ snap-disc on heat-exchanger panel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFits:\u003c\/strong\u003e AMH80403AXBD and related Goodman\/Amana furnaces\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eOEM vs. Generic\u003c\/h3\u003e\u003cp\u003eThe OEM limit is factory-calibrated to the correct cut-out temperature and mounting depth for this cabinet. A generic snap-disc with a different set point or probe length can trip early (no heat) or trip late (overheating), so we recommend the genuine part for this safety control.\u003c\/p\u003e\u003ch3\u003eInstallation Difficulty\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eEasy (2\/5).\u003c\/strong\u003e Shut off power, disconnect the spade terminals, remove the two mounting screws, and install the new switch in the same position and orientation. About 15 minutes. If the limit trips repeatedly, address airflow first — replace the filter and verify blower operation before assuming a bad switch.\u003c\/p\u003e","brand":"Goodman","offers":[{"title":"Default Title","offer_id":63057601364339,"sku":"GOODMAN-4988","price":39.95,"currency_code":"USD","in_stock":true}],"url":"https:\/\/nationalhvacparts.com\/products\/oem-goodman-primary-high-limit-switch-for-amh80403axbd-20162901","provider":"National HVAC Parts","version":"1.0","type":"link"}