{"product_id":"oem-goodman-200-f-primary-limit-switch-for-gmnt080-4b-b1370189","title":"OEM Goodman 200°F Primary Limit Switch for GMNT080-4B — B1370189","description":"\u003cp\u003eThe \u003cstrong\u003eGoodman B1370189 Primary Limit Switch\u003c\/strong\u003e is a genuine OEM high-limit safety control for the \u003cstrong\u003eGMNT080-4B\u003c\/strong\u003e gas furnace and compatible Goodman\/Amana models. Mounted on the heat exchanger or blower deck, this normally-closed switch opens at approximately \u003cstrong\u003e200°F\u003c\/strong\u003e to shut off the burners if supply-air temperature climbs too high — the furnace's primary defense against overheating from restricted airflow or a failed blower.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e B1370189 (OEM Goodman)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Primary high-limit switch\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTrip Temperature:\u003c\/strong\u003e 200°F open, auto-reset on cooldown\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFit:\u003c\/strong\u003e Goodman GMNT080-4B and compatible furnaces\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEquipment:\u003c\/strong\u003e Gas furnace\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTerminals:\u003c\/strong\u003e 1\/4\" quick-connect spade\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eOEM vs. Generic\u003c\/h3\u003e\u003cp\u003eThe \u003cstrong\u003eOEM B1370189\u003c\/strong\u003e is factory-calibrated to the 200°F trip point matched to your furnace's blower and heat-exchanger design. Generic limit switches with a different trip temperature can cause nuisance shutdowns or, worse, fail to protect the heat exchanger. For this critical safety device, OEM ensures correct protection and warranty compliance.\u003c\/p\u003e\u003ch3\u003eInstallation Difficulty\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eEasy (2\/5).\u003c\/strong\u003e Allow 15–20 minutes. Disconnect power, photograph the wiring, remove the two mounting screws, transfer the spade connectors, and remount the switch flush against the panel. Restore power and verify the furnace completes a full heat cycle without tripping. If you are not comfortable working around gas appliances, hire a licensed technician.\u003c\/p\u003e","brand":"Goodman","offers":[{"title":"Default Title","offer_id":63058129748339,"sku":"GOODMAN-11687","price":21.95,"currency_code":"USD","in_stock":true}],"url":"https:\/\/nationalhvacparts.com\/products\/oem-goodman-200-f-primary-limit-switch-for-gmnt080-4b-b1370189","provider":"National HVAC Parts","version":"1.0","type":"link"}