{"product_id":"oem-goodman-300-f-rollout-limit-switch-for-gmnt140-5b-b1370145","title":"OEM Goodman 300°F Rollout Limit Switch for GMNT140-5B — B1370145","description":"\u003ch2\u003eGoodman B1370145 300°F Flame Rollout Limit Switch\u003c\/h2\u003e\u003cp\u003eThe Goodman B1370145 is a genuine OEM flame rollout limit switch rated to open at \u003cstrong\u003e300°F\u003c\/strong\u003e, built as a direct-fit replacement for the \u003cstrong\u003eGMNT140-5B\u003c\/strong\u003e gas furnace and compatible Goodman\/Amana models. Mounted on the burner box, this manual-reset safety switch detects flame roll-out — flames escaping the heat-exchanger inlets — and immediately shuts down the furnace to prevent overheating and fire hazards.\u003c\/p\u003e\u003cp\u003eA tripped rollout switch usually signals an underlying problem such as a blocked flue, cracked heat exchanger, dirty burners, or a failing inducer. Replace a switch that has failed open or lost its calibration, and always diagnose the root cause before returning the furnace to service.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eOpen temperature: 300°F (manual reset)\u003c\/li\u003e\n\u003cli\u003eFunction: flame rollout safety limit\u003c\/li\u003e\n\u003cli\u003eBracket-mount with spade terminals\u003c\/li\u003e\n\u003cli\u003eFits Goodman GMNT140-5B and compatible furnaces\u003c\/li\u003e\n\u003cli\u003eGenuine Goodman OEM part number B1370145\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eOEM vs. Generic\u003c\/h3\u003e\u003cp\u003eThe \u003cstrong\u003eOEM B1370145\u003c\/strong\u003e is calibrated to the precise 300°F trip point and bracket geometry your furnace's safety certification depends on. Generic switches with a different set point or reset style can trip late (unsafe) or nuisance-trip (no heat). For a life-safety limit, always install the exact OEM specification.\u003c\/p\u003e\u003ch3\u003eInstallation Difficulty\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eEasy (1 of 5).\u003c\/strong\u003e Typically under 15 minutes. Cut power at the disconnect, note the two wire positions, unscrew the switch from the burner bracket, transfer the leads, and mount the new switch. Because this is a safety device, confirm the underlying cause of any trip — when in doubt, use a licensed HVAC technician.\u003c\/p\u003e","brand":"Goodman","offers":[{"title":"Default Title","offer_id":63058132795763,"sku":"GOODMAN-11778","price":4.95,"currency_code":"USD","in_stock":true}],"url":"https:\/\/nationalhvacparts.com\/products\/oem-goodman-300-f-rollout-limit-switch-for-gmnt140-5b-b1370145","provider":"National HVAC Parts","version":"1.0","type":"link"}