{"product_id":"oem-goodman-150-f-primary-auto-reset-limit-switch-for-gks90905dxae-20162903","title":"OEM Goodman 150°F Primary Auto-Reset Limit Switch for GKS90905DXAE — 20162903","description":"\u003cp\u003eThe \u003cstrong\u003eGoodman 20162903 Primary Limit Switch\u003c\/strong\u003e is a genuine OEM high-limit safety control rated at \u003cstrong\u003e150°F\u003c\/strong\u003e for the \u003cstrong\u003eGKS90905DXAE\u003c\/strong\u003e gas furnace. Mounted on the heat-exchanger or blower bulkhead, this auto-reset switch monitors supply-air temperature and shuts off the burners if the furnace overheats — typically caused by restricted airflow, a dirty filter, or a failing blower. It automatically closes and allows normal operation again once temperatures return to a safe range.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart number:\u003c\/strong\u003e 20162903\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Primary high-limit switch, automatic reset\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTrip point:\u003c\/strong\u003e 150°F (opens on rise)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFunction:\u003c\/strong\u003e De-energizes gas valve on furnace overheat\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFits:\u003c\/strong\u003e Goodman GKS90905DXAE and compatible models\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Snap-action bimetal disc with insulated terminals\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eOEM vs. Generic:\u003c\/strong\u003e The 150°F trip temperature is specific to this furnace's design. The OEM switch guarantees the correct calibration, disc size, and terminal layout so the safety circuit performs exactly as engineered. Generic limits with approximate temperature ratings can cause short-cycling or fail to protect the heat exchanger, risking cracks and carbon-monoxide leaks.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eInstall difficulty:\u003c\/strong\u003e Easy (1\/5). Turn off power at the furnace, unplug the two spade terminals, remove the mounting screws, and install the replacement in the same orientation. The job takes about 10–15 minutes. If the limit keeps tripping after replacement, check the air filter, ductwork, and blower speed to clear the underlying airflow restriction.\u003c\/p\u003e","brand":"Goodman","offers":[{"title":"Default Title","offer_id":63058099896691,"sku":"GOODMAN-10888","price":8.95,"currency_code":"USD","in_stock":true}],"url":"https:\/\/nationalhvacparts.com\/products\/oem-goodman-150-f-primary-auto-reset-limit-switch-for-gks90905dxae-20162903","provider":"National HVAC Parts","version":"1.0","type":"link"}