{"product_id":"oem-goodman-230-f-primary-limit-switch-for-gmt140-5-b1370192","title":"OEM Goodman 230°F Primary Limit Switch for GMT140-5 — B1370192","description":"\u003cp\u003eThe Goodman \u003cstrong\u003eB1370192 Primary Limit Switch\u003c\/strong\u003e is a genuine OEM high-limit safety control for \u003cstrong\u003eGMT140-5\u003c\/strong\u003e gas furnaces. Mounted on the heat exchanger plenum, this 230°F switch opens the control circuit and shuts off the burners if supply air temperature climbs too high — the main defense against a cracked or overheated heat exchanger. If your furnace short-cycles on heat or the burners light and then drop out, a faulty primary limit is a prime suspect.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eTrip temperature:\u003c\/strong\u003e 230°F (opens on rise)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Primary high-limit control\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReset:\u003c\/strong\u003e Automatic (snap-disc)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTerminals:\u003c\/strong\u003e 1\/4 in. quick-connect spade\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFits:\u003c\/strong\u003e Goodman \/ Amana GMT140-5 and compatible furnace platforms\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eOEM vs. Generic\u003c\/h3\u003e\u003cp\u003eThe \u003cstrong\u003eOEM B1370192\u003c\/strong\u003e guarantees the exact 230°F setpoint, insertion depth, and bracket the GMT140-5 was designed around. Generic limits with the wrong probe length or trip point can nuisance-trip or, worse, fail to protect the heat exchanger. For a primary safety limit, genuine OEM is the recommended replacement.\u003c\/p\u003e\u003ch3\u003eInstall Difficulty\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eEasy (2\/5).\u003c\/strong\u003e Kill power at the breaker, photograph and remove the two wires, back out the mounting screws, and install the new snap-disc in the same orientation. About 20–30 minutes. Persistent tripping after replacement points to an airflow restriction or a failing blower — have it inspected.\u003c\/p\u003e\u003cp\u003e\u003cem\u003eVerify your furnace model and part number before ordering.\u003c\/em\u003e\u003c\/p\u003e","brand":"Goodman","offers":[{"title":"Default Title","offer_id":63058163532147,"sku":"GOODMAN-B1370192","price":17.95,"currency_code":"USD","in_stock":true}],"url":"https:\/\/nationalhvacparts.com\/products\/oem-goodman-230-f-primary-limit-switch-for-gmt140-5-b1370192","provider":"National HVAC Parts","version":"1.0","type":"link"}