{"product_id":"oem-goodman-150-f-primary-limit-switch-for-amss921004cnaa-20162903","title":"OEM Goodman 150°F Primary Limit Switch for AMSS921004CNAA — 20162903","description":"\u003ch2\u003eGoodman 20162903 Primary Limit Switch (150°F)\u003c\/h2\u003e\u003cp\u003eThe \u003cstrong\u003eGoodman 20162903 primary limit switch\u003c\/strong\u003e is a genuine OEM high-temperature safety control for your \u003cstrong\u003eAMSS921004CNAA\u003c\/strong\u003e gas furnace. Mounted on the heat exchanger or burner assembly, this normally-closed thermal switch opens the control circuit and shuts down the burners if supply-air temperature climbs past its 150°F trip point, protecting the heat exchanger and blower housing from overheating. A worn or open limit switch is a common cause of a furnace that fires briefly and then short-cycles on high limit.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eOEM Part Number: 20162903\u003c\/li\u003e\n\u003cli\u003eType: Primary high-limit safety switch, normally closed (auto-reset)\u003c\/li\u003e\n\u003cli\u003eTrip Temperature: 150°F\u003c\/li\u003e\n\u003cli\u003eBrand: Goodman \/ Amana\u003c\/li\u003e\n\u003cli\u003eApplication: Gas furnace heat exchanger \/ plenum\u003c\/li\u003e\n\u003cli\u003eCompatible Model: AMSS921004CNAA\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eOEM vs. Generic\u003c\/h3\u003e\u003cp\u003eThis is a \u003cstrong\u003egenuine Goodman OEM\u003c\/strong\u003e limit switch, calibrated to the exact 150°F trip point specified for your model. Generic aftermarket limits are cheaper but frequently ship with a different trip temperature or mounting bracket, leading to nuisance trips or unsafe operation. For a safety-critical control, we recommend the OEM part.\u003c\/p\u003e\u003ch3\u003eInstallation Difficulty\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eEasy (1\/5).\u003c\/strong\u003e Two mounting screws and two spade terminals — typically a 10–15 minute repair. Always disconnect power at the furnace switch and breaker before servicing.\u003c\/p\u003e\u003cp\u003eFits Goodman and Amana furnaces including model AMSS921004CNAA. Contact info@nationalhvacparts.com if you need help confirming fitment.\u003c\/p\u003e","brand":"Goodman","offers":[{"title":"Default Title","offer_id":63057780867443,"sku":"GOODMAN-7480","price":8.95,"currency_code":"USD","in_stock":true}],"url":"https:\/\/nationalhvacparts.com\/products\/oem-goodman-150-f-primary-limit-switch-for-amss921004cnaa-20162903","provider":"National HVAC Parts","version":"1.0","type":"link"}