{"product_id":"oem-goodman-200f-primary-limit-switch-for-ams80905cxa-b1370189","title":"OEM Goodman 200F Primary Limit Switch for AMS80905CXA — B1370189","description":"\u003ch2\u003eGoodman B1370189 Primary Limit Switch (200°F)\u003c\/h2\u003e\u003cp\u003eThe \u003cstrong\u003eB1370189\u003c\/strong\u003e is the genuine OEM primary high-limit safety switch for the Goodman\/Amana \u003cstrong\u003eAMS80905CXA\u003c\/strong\u003e gas furnace and compatible 80% AFUE models. Mounted on the heat-exchanger\/plenum area, this normally-closed control monitors supply-air temperature and opens the burner circuit at approximately \u003cstrong\u003e200°F\u003c\/strong\u003e if the furnace overheats — the classic symptom of restricted airflow. It is your furnace's primary defense against a cracked heat exchanger and overheat damage.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eOpen temperature:\u003c\/strong\u003e 200°F (auto-reset)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Normally-closed primary high-limit switch\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTerminals:\u003c\/strong\u003e 1\/4\" quick-connect spade\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMounting:\u003c\/strong\u003e Flange\/bracket-mount, direct OEM fit\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFits:\u003c\/strong\u003e Goodman \u0026amp; Amana AMS80905CXA and related 80% furnaces\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eOEM vs. Generic\u003c\/h3\u003e\u003cp\u003eBecause the primary limit protects the heat exchanger, precise calibration matters. This \u003cstrong\u003efactory-original Goodman switch\u003c\/strong\u003e is set to the exact 200°F trip point the OEM engineered for this cabinet's airflow. Generic substitutes may trip early (causing short-cycling and no heat) or late (allowing dangerous overheating). Choose OEM for reliable, code-correct protection.\u003c\/p\u003e\u003ch3\u003eInstallation Difficulty\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eEasy (1\/5).\u003c\/strong\u003e Kill power at the breaker, note and disconnect the two wire leads, remove the mounting screws, and install the replacement in the same orientation. Typically a 10–15 minute job. If the new limit still trips, the root cause is almost always airflow — replace a clogged filter, open closed registers, and verify blower operation before condemning the switch again.\u003c\/p\u003e\u003cp\u003e\u003cem\u003eKeep your furnace running safely with a genuine Goodman B1370189 primary limit.\u003c\/em\u003e\u003c\/p\u003e","brand":"Goodman","offers":[{"title":"Default Title","offer_id":63057709203827,"sku":"GOODMAN-7116","price":9.95,"currency_code":"USD","in_stock":true}],"url":"https:\/\/nationalhvacparts.com\/products\/oem-goodman-200f-primary-limit-switch-for-ams80905cxa-b1370189","provider":"National HVAC Parts","version":"1.0","type":"link"}