{"product_id":"oem-goodman-150-f-primary-limit-switch-for-ames920403anaa-20162903","title":"OEM Goodman 150°F Primary Limit Switch for AMES920403ANAA — 20162903","description":"\u003cp\u003eThe \u003cstrong\u003eGoodman 20162903 Primary Limit Switch\u003c\/strong\u003e is a genuine OEM high-limit safety control engineered for \u003cstrong\u003eAMES920403ANAA\u003c\/strong\u003e gas furnaces and compatible Goodman\/Amana models. This normally-closed thermal switch monitors heat-exchanger temperature and opens the burner circuit if the furnace overheats, protecting the equipment and your home from unsafe operating conditions. A failed or nuisance-tripping limit switch is one of the most common causes of a furnace that fires briefly then shuts down.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eTrip temperature:\u003c\/strong\u003e 150°F (auto-reset)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Primary \/ main high-limit switch\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFunction:\u003c\/strong\u003e Normally closed, opens on overtemperature\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFits:\u003c\/strong\u003e AMES920403ANAA and compatible Goodman\/Amana furnaces\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM Part Number:\u003c\/strong\u003e 20162903\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eOEM vs. Generic\u003c\/h3\u003e\u003cp\u003eThis is the \u003cstrong\u003egenuine OEM component\u003c\/strong\u003e, matched to the exact trip point and mounting footprint your furnace's control logic expects. Aftermarket generics may use a different reset behavior or trip tolerance, leading to short-cycling or premature lockouts. For a critical safety control, OEM is the recommended choice.\u003c\/p\u003e\u003ch3\u003eInstallation Difficulty\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eEasy (DIY-friendly).\u003c\/strong\u003e Typically two mounting screws and two spade connectors. Always cut power at the breaker before servicing. If the switch trips repeatedly after replacement, inspect airflow and the heat exchanger before running the unit.\u003c\/p\u003e","brand":"Goodman","offers":[{"title":"Default Title","offer_id":63057592844659,"sku":"GOODMAN-4700","price":8.95,"currency_code":"USD","in_stock":true}],"url":"https:\/\/nationalhvacparts.com\/products\/oem-goodman-150-f-primary-limit-switch-for-ames920403anaa-20162903","provider":"National HVAC Parts","version":"1.0","type":"link"}