{"product_id":"oem-goodman-240-f-3-primary-limit-switch-gmpv100-3-1370903s","title":"OEM Goodman 240°F 3\" Primary Limit Switch GMPV100-3 — 1370903S","description":"\u003cp\u003eThe Goodman \u003cstrong\u003e1370903S Primary Limit Switch\u003c\/strong\u003e is a genuine OEM safety control for the \u003cstrong\u003eGMPV100-3\u003c\/strong\u003e furnace and compatible Goodman\/Amana models. Rated to open at \u003cstrong\u003e240°F\u003c\/strong\u003e with a \u003cstrong\u003e3-inch insert length\u003c\/strong\u003e, this high-limit switch shuts off the burners if the heat exchanger temperature climbs too high — protecting the furnace and home from overheating.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eOEM Part Number: 1370903S\u003c\/li\u003e\n\u003cli\u003ePart Type: Primary High-Limit Switch\u003c\/li\u003e\n\u003cli\u003eTrip Temperature: 240°F (auto-reset)\u003c\/li\u003e\n\u003cli\u003eInsert Length: 3 inches\u003c\/li\u003e\n\u003cli\u003eBrand: Goodman\u003c\/li\u003e\n\u003cli\u003eEquipment: Gas Furnace\u003c\/li\u003e\n\u003cli\u003ePrimary Fit: GMPV100-3\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eSymptoms of a Bad Limit Switch\u003c\/h3\u003e\u003cp\u003eFurnace short cycles on high limit, blower runs constantly, or the unit trips to lockout during a heat call. A restricted airflow condition (dirty filter, closed vents) can also trip a healthy switch — verify airflow before replacing.\u003c\/p\u003e\u003ch3\u003eOEM vs. Generic\u003c\/h3\u003e\u003cp\u003eThe \u003cstrong\u003eOEM Goodman 1370903S\u003c\/strong\u003e guarantees the exact 240°F trip point and 3\" insert depth required for safe operation. A \u003cstrong\u003egeneric equivalent\u003c\/strong\u003e can save money but must match both the temperature rating and insert length precisely — mismatches compromise safety. For a safety-critical control, OEM is strongly recommended.\u003c\/p\u003e\u003ch3\u003eInstallation Difficulty: Easy\u003c\/h3\u003e\u003cp\u003eCut power, remove two mounting screws, disconnect the two spade terminals, and install the replacement in the same orientation. Estimated time: 15 minutes. A safe DIY repair when airflow issues are ruled out first.\u003c\/p\u003e","brand":"Goodman","offers":[{"title":"Default Title","offer_id":63058151342451,"sku":"GOODMAN-12147","price":29.95,"currency_code":"USD","in_stock":true}],"url":"https:\/\/nationalhvacparts.com\/products\/oem-goodman-240-f-3-primary-limit-switch-gmpv100-3-1370903s","provider":"National HVAC Parts","version":"1.0","type":"link"}