{"product_id":"oem-goodman-150-f-primary-limit-switch-for-wfd195090s4caa-20162903","title":"OEM Goodman 150°F Primary Limit Switch for WFD195090S4CAA — 20162903","description":"\u003ch2\u003eGoodman 20162903 Primary Limit Switch (150°F)\u003c\/h2\u003e\u003cp\u003eThe Goodman \u003cstrong\u003e20162903\u003c\/strong\u003e is a genuine OEM primary high-limit switch rated to open at \u003cstrong\u003e150°F\u003c\/strong\u003e, designed for the \u003cstrong\u003eWFD195090S4CAA\u003c\/strong\u003e gas furnace. This snap-disc safety control continuously monitors heat-exchanger temperature and shuts down the burners if the furnace overheats — typically caused by restricted airflow, a dirty filter, or blower failure. A tripped or failed limit switch is a common reason a furnace short-cycles or stops heating entirely.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eType: Primary high-limit \/ snap-disc safety switch\u003c\/li\u003e\n\u003cli\u003eTrip temperature: 150°F (opens on rise)\u003c\/li\u003e\n\u003cli\u003eFunction: Overheat protection, auto-reset\u003c\/li\u003e\n\u003cli\u003eFits model: WFD195090S4CAA\u003c\/li\u003e\n\u003cli\u003eOEM part number: 20162903\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eOEM vs. Generic\u003c\/h3\u003e\u003cp\u003eThe \u003cstrong\u003eOEM 20162903\u003c\/strong\u003e is calibrated to the precise trip temperature and mounting footprint your furnace's control sequence expects. Generic limit switches with the wrong set point can nuisance-trip or, worse, fail to protect the heat exchanger. As a safety component, the genuine part is the recommended choice.\u003c\/p\u003e\u003ch3\u003eInstallation Difficulty\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eEasy to Moderate\u003c\/strong\u003e — the switch mounts to the burner\/heat-exchanger panel with two screws and quick-connect terminals. Cut power at the breaker first, note wire positions, and confirm airflow issues are resolved so the new switch isn't tripping on a real fault.\u003c\/p\u003e","brand":"Goodman","offers":[{"title":"Default Title","offer_id":63058221072755,"sku":"GOODMAN-13981","price":18.95,"currency_code":"USD","in_stock":true}],"url":"https:\/\/nationalhvacparts.com\/products\/oem-goodman-150-f-primary-limit-switch-for-wfd195090s4caa-20162903","provider":"National HVAC Parts","version":"1.0","type":"link"}