{"product_id":"oem-goodman-primary-limit-temperature-control-for-gks90904cxag-20162904","title":"OEM Goodman Primary Limit Temperature Control for GKS90904CXAG — 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\u003eGoodman GKS90904CXAG\u003c\/strong\u003e gas furnace and compatible GKS90-series units. This snap-disc control monitors supply-air temperature and cuts power to the gas valve if the furnace overheats — protecting the heat exchanger from cracking and preventing dangerous operating conditions. A failed limit switch shows up as short cycling, no heat, or a furnace that runs the blower but won't fire.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003ePart number: 20162904\u003c\/li\u003e\n\u003cli\u003eType: Primary high-limit \/ auto-reset snap-disc control\u003c\/li\u003e\n\u003cli\u003eFunction: Over-temperature safety cutout\u003c\/li\u003e\n\u003cli\u003eFits: Goodman GKS90904CXAG and compatible GKS90 furnaces\u003c\/li\u003e\n\u003cli\u003eMounting: Furnace vestibule \/ heat exchanger panel\u003c\/li\u003e\n\u003cli\u003eBrand: Goodman OEM\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eOEM vs. Generic\u003c\/h3\u003e\u003cp\u003eThis \u003cstrong\u003eGoodman OEM\u003c\/strong\u003e limit control is calibrated to the exact trip and reset temperatures specified for your furnace. Generic limit switches with the wrong temperature rating can either nuisance-trip (no heat) or fail to protect the heat exchanger (a safety hazard). Because this is a safety device, matching the OEM calibration is strongly recommended.\u003c\/p\u003e\u003ch3\u003eInstallation Difficulty\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eEasy to Moderate\u003c\/strong\u003e — Two wire terminals and typically two mounting screws. Cut power at the disconnect first. A DIY-capable owner can replace it, but confirm correct orientation and terminal connections, or use a licensed technician.\u003c\/p\u003e","brand":"Goodman","offers":[{"title":"Default Title","offer_id":63058097504627,"sku":"GOODMAN-10821","price":35.95,"currency_code":"USD","in_stock":true}],"url":"https:\/\/nationalhvacparts.com\/products\/oem-goodman-primary-limit-temperature-control-for-gks90904cxag-20162904","provider":"National HVAC Parts","version":"1.0","type":"link"}