{"product_id":"oem-goodman-300-f-flame-rollout-limit-switch-for-gun125-5-b1370108","title":"OEM Goodman 300°F Flame Rollout Limit Switch for GUN125-5 — B1370108","description":"\u003cp\u003eThe Goodman \u003cstrong\u003eB1370108 Flame Rollout Switch\u003c\/strong\u003e is the genuine OEM \u003cstrong\u003e300°F\u003c\/strong\u003e manual-reset limit switch for the Goodman \u003cstrong\u003eGUN125-5\u003c\/strong\u003e gas furnace. Mounted on the burner assembly, this safety switch trips and cuts power to the gas valve if flame rolls out of the combustion chamber — a condition usually caused by a blocked heat exchanger or restricted flue. It is a critical burn- and CO-protection device.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eOEM Part Number: B1370108\u003c\/li\u003e\n\u003cli\u003eCompatible Model: Goodman GUN125-5\u003c\/li\u003e\n\u003cli\u003eTrip Temperature: 300°F\u003c\/li\u003e\n\u003cli\u003eType: Manual-reset flame rollout \/ thermal limit switch\u003c\/li\u003e\n\u003cli\u003eContacts: Normally closed, open on overtemp\u003c\/li\u003e\n\u003cli\u003eEquipment: Gas furnace burner assembly\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eOEM vs. Generic\u003c\/h3\u003e\u003cp\u003eThe \u003cstrong\u003egenuine Goodman OEM\u003c\/strong\u003e switch trips at the precise 300°F rating specified for this furnace. Because this is a life-safety component protecting against flame rollout and carbon monoxide, matching the exact OEM trip temperature is essential — never substitute a switch with a different rating.\u003c\/p\u003e\u003ch3\u003eInstallation Difficulty\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eEasy (1\/5).\u003c\/strong\u003e Cut power, disconnect the two leads, remove the mounting screws, and install the new switch in the same orientation. Under 10 minutes. \u003cstrong\u003eImportant:\u003c\/strong\u003e if a rollout switch has tripped, always diagnose and correct the underlying cause (blocked heat exchanger or flue) before returning the furnace to service.\u003c\/p\u003e\u003cp\u003e\u003cem\u003eFitment note: confirm the 300°F rating on your existing switch before ordering.\u003c\/em\u003e\u003c\/p\u003e","brand":"Goodman","offers":[{"title":"Default Title","offer_id":63058189287795,"sku":"GOODMAN-13164","price":4.95,"currency_code":"USD","in_stock":true}],"url":"https:\/\/nationalhvacparts.com\/products\/oem-goodman-300-f-flame-rollout-limit-switch-for-gun125-5-b1370108","provider":"National HVAC Parts","version":"1.0","type":"link"}