{"product_id":"oem-goodman-primary-limit-control-for-gch90904cxaa-20162904","title":"OEM Goodman Primary Limit Control for GCH90904CXAA — 20162904","description":"\u003ch3\u003eGoodman 20162904 Primary Limit Temperature Control\u003c\/h3\u003e\u003cp\u003eThe Goodman 20162904 is a genuine OEM primary high-limit temperature control designed for the \u003cstrong\u003eGCH90904CXAA\u003c\/strong\u003e gas furnace. This normally-closed thermal safety switch monitors supply-air temperature and cuts power to the gas valve if the furnace overheats — protecting the heat exchanger, blower, and surrounding cabinet from thermal damage. A furnace that short-cycles on limit, fails to fire, or trips on high temperature is a classic symptom of a failed or drifting limit control.\u003c\/p\u003e\u003ch4\u003eSpecifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eFunction: Primary high-temperature limit (safety) switch\u003c\/li\u003e\n\u003cli\u003eConfiguration: Normally closed, auto-reset\u003c\/li\u003e\n\u003cli\u003eFits: Goodman GCH90904CXAA furnace\u003c\/li\u003e\n\u003cli\u003eMount: Manifold\/vestibule plate mount\u003c\/li\u003e\n\u003cli\u003eOEM Part Number: 20162904\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eOEM vs. Generic\u003c\/h4\u003e\u003cp\u003eA limit switch is a life-safety device, and its trip temperature is matched to your specific furnace design. The \u003cstrong\u003egenuine Goodman OEM 20162904\u003c\/strong\u003e is calibrated to the factory setpoint, unlike universal limits that require guessing the cutout temperature. For any safety control, OEM is strongly recommended.\u003c\/p\u003e\u003ch4\u003eInstallation Difficulty\u003c\/h4\u003e\u003cp\u003e\u003cstrong\u003eEasy to moderate\u003c\/strong\u003e — typically two wire terminals and two mounting screws. Always disconnect power before service and confirm the correct part number, as the setpoint is model-specific.\u003c\/p\u003e","brand":"Goodman","offers":[{"title":"Default Title","offer_id":63058054316403,"sku":"GOODMAN-9731","price":35.95,"currency_code":"USD","in_stock":true}],"url":"https:\/\/nationalhvacparts.com\/products\/oem-goodman-primary-limit-control-for-gch90904cxaa-20162904","provider":"National HVAC Parts","version":"1.0","type":"link"}