{"product_id":"oem-goodman-200-f-primary-limit-switch-for-ams80905cnaa-b1370189","title":"OEM Goodman 200°F Primary Limit Switch for AMS80905CNAA — B1370189","description":"\u003cp\u003eThe \u003cstrong\u003eGoodman B1370189 Primary Limit Switch\u003c\/strong\u003e is a genuine OEM safety control designed for the Amana\/Goodman \u003cstrong\u003eAMS80905CNAA\u003c\/strong\u003e 80% AFUE gas furnace and compatible models. This normally-closed thermal switch monitors heat-exchanger and plenum temperatures and interrupts the gas valve\/ignition circuit when the furnace exceeds its safe operating limit, protecting your equipment from overheating caused by restricted airflow, a dirty filter, or a failing blower.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eTrip temperature: 200°F (auto-reset)\u003c\/li\u003e\n\u003cli\u003eType: Primary high-limit safety switch\u003c\/li\u003e\n\u003cli\u003eConfiguration: Normally closed (opens on temperature rise)\u003c\/li\u003e\n\u003cli\u003eFits: Goodman\/Amana AMS80905CNAA and compatible 80% furnaces\u003c\/li\u003e\n\u003cli\u003eOEM part number: B1370189\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eOEM vs. Generic\u003c\/h3\u003e\u003cp\u003eOur \u003cstrong\u003eOEM Goodman\u003c\/strong\u003e limit switch is built to the exact trip point and mounting spec of your furnace, ensuring the safety circuit opens at the correct temperature. Generic aftermarket switches may use approximate trip ratings or looser tolerances, which can cause nuisance shutdowns or, worse, fail to trip when needed. For a safety-critical control we strongly recommend the genuine OEM part.\u003c\/p\u003e\u003ch3\u003eSymptoms of a Failed Limit Switch\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eFurnace short-cycles or shuts down on high limit\u003c\/li\u003e\n\u003cli\u003eBlower runs continuously\u003c\/li\u003e\n\u003cli\u003eNo heat \/ ignition locks out\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eInstallation Difficulty: Easy\u003c\/h3\u003e\u003cp\u003eRated \u003cstrong\u003eEasy (2\/5)\u003c\/strong\u003e. Replacement typically takes 15–20 minutes with basic hand tools. Always disconnect power at the breaker before servicing. Remove the two mounting screws, transfer the wire leads to the new switch, and reinstall. If you are not comfortable working near the gas valve or heat exchanger, consult a licensed HVAC technician.\u003c\/p\u003e","brand":"Goodman","offers":[{"title":"Default Title","offer_id":63057708941683,"sku":"GOODMAN-7110","price":18.95,"currency_code":"USD","in_stock":true}],"url":"https:\/\/nationalhvacparts.com\/products\/oem-goodman-200-f-primary-limit-switch-for-ams80905cnaa-b1370189","provider":"National HVAC Parts","version":"1.0","type":"link"}