{"product_id":"oem-goodman-250-f-primary-limit-switch-for-gdt090-4b-b1370194","title":"OEM Goodman 250°F Primary Limit Switch for GDT090-4B — B1370194","description":"\u003cp\u003eThe Goodman \u003cstrong\u003eB1370194 Primary Limit Switch\u003c\/strong\u003e is the genuine OEM high-limit safety control for the Goodman\/Amana \u003cstrong\u003eGDT090-4B\u003c\/strong\u003e gas furnace and compatible models. This primary limit monitors supply-air temperature at the heat exchanger and opens at approximately 250°F if airflow is restricted or the blower fails, cutting the gas valve to prevent a dangerous overheat condition.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eTrip temperature:\u003c\/strong\u003e 250°F (open on rise)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFunction:\u003c\/strong\u003e Primary high-limit overheat protection\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eContact type:\u003c\/strong\u003e Normally closed, automatic reset\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFits:\u003c\/strong\u003e Goodman\/Amana GDT090-4B and related furnace models\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMounting:\u003c\/strong\u003e Insertion-style with mounting flange and quick-connect terminals\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Genuine Goodman OEM\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eOEM vs. Generic\u003c\/h3\u003e\u003cp\u003eThe \u003cstrong\u003eOEM B1370194\u003c\/strong\u003e is matched to the GDT090's heat-exchanger geometry and factory trip calibration, so the probe length and setpoint are exactly what the furnace board expects. Generic replacements frequently differ in probe insertion depth and reset temperature, which can cause premature lockouts, short cycling, or — worse — a limit that trips too late. On a primary safety limit, genuine OEM is strongly recommended.\u003c\/p\u003e\u003ch3\u003eInstallation Difficulty\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eEasy (2\/5).\u003c\/strong\u003e Plan on 15–20 minutes: kill power and gas, disconnect the two terminals, remove the mounting screws, and slide the probe out of the heat-exchanger opening. Install the new switch at the same depth and orientation, reconnect, and run a full heat cycle to confirm proper limit operation. When in doubt, use a licensed HVAC professional.\u003c\/p\u003e","brand":"Goodman","offers":[{"title":"Default Title","offer_id":63057146741107,"sku":"GOODMAN-B1370194","price":46.95,"currency_code":"USD","in_stock":true}],"url":"https:\/\/nationalhvacparts.com\/products\/oem-goodman-250-f-primary-limit-switch-for-gdt090-4b-b1370194","provider":"National HVAC Parts","version":"1.0","type":"link"}