{"product_id":"oem-goodman-primary-high-limit-temperature-control-for-gks90904cxad-20162904","title":"OEM Goodman Primary High Limit Temperature Control for GKS90904CXAD — 20162904","description":"\u003ch2\u003eGoodman 20162904 Primary High Limit Temperature Control\u003c\/h2\u003e\u003cp\u003eThe Goodman \u003cstrong\u003e20162904\u003c\/strong\u003e is a genuine OEM primary high-limit temperature control designed for the \u003cstrong\u003eGKS90904CXAD\u003c\/strong\u003e gas furnace and compatible Goodman\/Amana models. This normally-closed safety switch monitors heat-exchanger and plenum temperatures, cutting power to the gas valve if the furnace overheats — a critical protection against cracked heat exchangers and fire hazards. A failed limit switch is a common cause of a furnace that short-cycles, trips on high limit, or refuses to fire.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003ePart type: Primary high-limit temperature control (auto-reset)\u003c\/li\u003e\n\u003cli\u003eFunction: Overheat safety cutoff for gas valve\/burners\u003c\/li\u003e\n\u003cli\u003eFits: Goodman GKS90904CXAD and compatible 90%-AFUE furnaces\u003c\/li\u003e\n\u003cli\u003eConfiguration: Normally closed (NC) snap-disc\u003c\/li\u003e\n\u003cli\u003eOEM manufacturer: Goodman \/ Amana\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eOEM vs. Generic\u003c\/h3\u003e\u003cp\u003eOur \u003cstrong\u003eOEM 20162904\u003c\/strong\u003e is calibrated to the exact trip temperature Goodman engineered for this furnace, ensuring correct cycling and full safety compliance. Generic aftermarket limits may use a different set point, causing nuisance lockouts or reduced protection. For a safety-critical component, we recommend the OEM part.\u003c\/p\u003e\u003ch3\u003eInstallation Difficulty: Moderate\u003c\/h3\u003e\u003cp\u003eRated \u003cstrong\u003e3\/5\u003c\/strong\u003e. Requires shutting off power and gas, removing the burner-compartment door, and transferring wiring to the new switch. Most competent DIYers can complete it in 20–30 minutes; if you are unsure why the original tripped, have an HVAC technician diagnose first.\u003c\/p\u003e\u003cp\u003e\u003cem\u003eAlways disconnect power at the breaker before servicing your furnace.\u003c\/em\u003e\u003c\/p\u003e","brand":"Goodman","offers":[{"title":"Default Title","offer_id":63058096324979,"sku":"GOODMAN-10785","price":35.95,"currency_code":"USD","in_stock":true}],"url":"https:\/\/nationalhvacparts.com\/products\/oem-goodman-primary-high-limit-temperature-control-for-gks90904cxad-20162904","provider":"National HVAC Parts","version":"1.0","type":"link"}