{"product_id":"oem-goodman-primary-limit-switch-for-amec800403anaa-20162906","title":"OEM Goodman Primary Limit Switch for AMEC800403ANAA — 20162906","description":"\u003cp\u003eThe \u003cstrong\u003eGoodman 20162906 M4 Primary Limit Switch\u003c\/strong\u003e is the genuine OEM high-limit safety control for the \u003cstrong\u003eAMEC800403ANAA\u003c\/strong\u003e gas furnace and compatible Goodman\/Amana models. Mounted on the heat exchanger or plenum, this thermal switch monitors supply-air temperature and shuts off the burners if the furnace overheats — protecting the heat exchanger and preventing a fire hazard. A failed limit switch is a common cause of a furnace that short-cycles, locks out, or won't fire at all.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eOEM Part Number: 20162906\u003c\/li\u003e\n\u003cli\u003eType: M4 Primary High-Limit Switch\u003c\/li\u003e\n\u003cli\u003eFunction: Automatic-reset overheat safety control\u003c\/li\u003e\n\u003cli\u003eFits Model: AMEC800403ANAA (and compatible Goodman\/Amana furnaces)\u003c\/li\u003e\n\u003cli\u003eMount: Heat-exchanger \/ plenum bracket\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eOEM vs. Generic\u003c\/h3\u003e\u003cp\u003eThis genuine \u003cstrong\u003eOEM Goodman\u003c\/strong\u003e switch is calibrated to the exact trip temperature your furnace's control board expects. Generic substitutes may open at the wrong temperature, causing nuisance lockouts or, worse, failing to trip. For a safety component, OEM is the recommended choice.\u003c\/p\u003e\u003ch3\u003eInstallation Difficulty\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eEasy to Moderate\u003c\/strong\u003e — remove two mounting screws and transfer the wiring. Disconnect power at the breaker before servicing and verify orientation against the old switch. Replacement typically takes under 20 minutes.\u003c\/p\u003e","brand":"Goodman","offers":[{"title":"Default Title","offer_id":63057541071219,"sku":"GOODMAN-3766","price":16.95,"currency_code":"USD","in_stock":true}],"url":"https:\/\/nationalhvacparts.com\/products\/oem-goodman-primary-limit-switch-for-amec800403anaa-20162906","provider":"National HVAC Parts","version":"1.0","type":"link"}