{"product_id":"oem-goodman-primary-limit-temp-control-for-gks90904cxah-20162904","title":"OEM Goodman Primary Limit Temp Control for GKS90904CXAH — 20162904","description":"\u003cp\u003eThe \u003cstrong\u003eGoodman 20162904 Primary Limit Temperature Control\u003c\/strong\u003e is a genuine OEM high-limit safety switch for the \u003cstrong\u003eGKS90904CXAH\u003c\/strong\u003e gas furnace and compatible Goodman\/Amana models. Mounted on the heat-exchanger bulkhead, it continuously senses supply-air temperature and cuts the gas valve if airflow is lost or the exchanger overheats — protecting against cracked heat exchangers and fire hazards. Unlike the manual-reset auxiliary switch, this primary limit typically auto-resets once temperatures return to a safe range.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eOEM Part Number: 20162904\u003c\/li\u003e\n\u003cli\u003eType: Primary high-limit temperature control\u003c\/li\u003e\n\u003cli\u003eReset: Automatic (temperature-sensing)\u003c\/li\u003e\n\u003cli\u003eFunction: Supply-air overtemperature burner cutoff\u003c\/li\u003e\n\u003cli\u003eFits: Goodman GKS90904CXAH and compatible furnaces\u003c\/li\u003e\n\u003cli\u003eBrand: Goodman \/ Amana OEM\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eOEM vs. Generic\u003c\/h3\u003e\u003cp\u003eThe OEM primary limit is factory-calibrated to the exact open\/close temperatures and features the correct sensing-element length and mounting flange for this furnace. Generic substitutes with the wrong trip point or probe depth cause repeated lockouts or fail to protect the exchanger. For a primary safety control, OEM is the only recommended option.\u003c\/p\u003e\u003ch3\u003eInstallation Difficulty\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eModerate\u003c\/strong\u003e — power off at the breaker, remove the blower\/burner panel, unscrew the mounting flange, transfer the two wire leads, and reseat the sensing element in the airstream. About 20–30 minutes for a competent DIYer; a licensed technician is advised if you are unsure. Verify furnace cycles and limits correctly after install.\u003c\/p\u003e","brand":"Goodman","offers":[{"title":"Default Title","offer_id":63058097897843,"sku":"GOODMAN-10833","price":35.95,"currency_code":"USD","in_stock":true}],"url":"https:\/\/nationalhvacparts.com\/products\/oem-goodman-primary-limit-temp-control-for-gks90904cxah-20162904","provider":"National HVAC Parts","version":"1.0","type":"link"}