{"product_id":"oem-goodman-150-f-primary-limit-switch-for-gmv951155dxba-20162903","title":"OEM Goodman 150°F Primary Limit Switch for GMV951155DXBA — 20162903","description":"\u003cp\u003eThe \u003cstrong\u003eGoodman 20162903 Primary Limit Switch\u003c\/strong\u003e is a genuine OEM \u003cstrong\u003e150°F\u003c\/strong\u003e high-limit safety control for the \u003cstrong\u003eGoodman GMV951155DXBA\u003c\/strong\u003e 96% AFUE variable-speed gas furnace and compatible GMV\/GCV models. Mounted on the heat-exchanger deck, this switch continuously monitors supply-air temperature and shuts off the burners if the furnace overheats — protecting against restricted airflow and a cracked heat exchanger.\u003c\/p\u003e\u003cp\u003eWhen a dirty filter, closed dampers, or a failing blower let temperatures climb, the 150°F switch opens and cuts the gas valve, then automatically resets once temperatures fall back to a safe range. Short-cycling on the limit is a classic sign of an airflow problem or a worn limit switch that trips too early.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart number:\u003c\/strong\u003e 20162903 (OEM Goodman)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Primary high-limit switch (auto reset)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTrip point:\u003c\/strong\u003e 150°F\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eContacts:\u003c\/strong\u003e Normally closed (opens on overheat)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFits:\u003c\/strong\u003e Goodman GMV951155DXBA and compatible furnaces\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eOEM vs. Generic:\u003c\/strong\u003e The genuine 20162903 is set to Goodman's exact 150°F trip temperature and mounting-bracket dimensions, so it protects the heat exchanger without nuisance trips. Generic limits with slightly different set points cause premature shutdowns or, worse, fail to protect. For a safety-critical control, choose OEM.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eInstallation difficulty:\u003c\/strong\u003e Easy — usually two screws and two spade terminals, about 10 minutes with a nut driver. Replace filters and confirm proper airflow first, since a good limit switch trips for a reason. Shut off gas and power before servicing.\u003c\/p\u003e","brand":"Goodman","offers":[{"title":"Default Title","offer_id":63058179424627,"sku":"GOODMAN-12884","price":19.95,"currency_code":"USD","in_stock":true}],"url":"https:\/\/nationalhvacparts.com\/products\/oem-goodman-150-f-primary-limit-switch-for-gmv951155dxba-20162903","provider":"National HVAC Parts","version":"1.0","type":"link"}