{"product_id":"oem-goodman-240f-primary-limit-switch-for-gmpe100-4a-b1370912s","title":"OEM Goodman 240F Primary Limit Switch for GMPE100-4A — B1370912S","description":"\u003cp\u003eThe \u003cstrong\u003eGoodman B1370912S Primary Limit Switch\u003c\/strong\u003e is a genuine OEM high-limit safety control for the Goodman\/Amana \u003cstrong\u003eGMPE100-4A\u003c\/strong\u003e gas furnace. Featuring a \u003cstrong\u003e240°F trip point\u003c\/strong\u003e and a \u003cstrong\u003e7-inch insert length\u003c\/strong\u003e, it mounts on the heat-exchanger bulkhead and opens the burner circuit if plenum temperature exceeds safe limits — typically the result of restricted airflow from a dirty filter, blocked ducts, or a failing blower. Unlike a manual-reset switch, the primary limit is auto-resetting once temperatures return to normal.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eTrip temperature: 240°F\u003c\/li\u003e\n\u003cli\u003eInsert length: 7 inches\u003c\/li\u003e\n\u003cli\u003eType: Auto-reset primary high-limit switch\u003c\/li\u003e\n\u003cli\u003eFits: Goodman \u0026amp; Amana GMPE100-4A and compatible furnaces\u003c\/li\u003e\n\u003cli\u003eOEM Part Number: B1370912S\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eOEM vs. Generic\u003c\/h3\u003e\u003cp\u003eThe trip temperature and insert length are matched precisely to the GMPE100-4A heat exchanger. An OEM switch trips at the engineered 240°F setpoint; a generic with the wrong temperature rating or probe depth can either nuisance-trip on normal cycles or fail to protect the heat exchanger. For a safety-rated limit, exact OEM specs matter.\u003c\/p\u003e\u003ch3\u003eInstallation Difficulty: \u003cspan\u003eEasy–Moderate\u003c\/span\u003e\n\u003c\/h3\u003e\u003cp\u003eTwo mounting screws and two spade terminals; the probe slides into the existing opening. Roughly 15–20 minutes for a confident DIYer. \u003cstrong\u003eDisconnect power before servicing.\u003c\/strong\u003e If the new limit still trips, address the underlying airflow restriction — repeated high-limit trips point to a filter, duct, or blower problem, not the switch itself.\u003c\/p\u003e","brand":"Goodman","offers":[{"title":"Default Title","offer_id":63058139709811,"sku":"GOODMAN-11984","price":24.95,"currency_code":"USD","in_stock":true}],"url":"https:\/\/nationalhvacparts.com\/products\/oem-goodman-240f-primary-limit-switch-for-gmpe100-4a-b1370912s","provider":"National HVAC Parts","version":"1.0","type":"link"}