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The Goodman B1370254 Stack Overtemp Switch is a genuine OEM manual-reset rollout/flame-safety control for GMNTE060-3 gas furnaces and compatible Goodman/Amana models. Positioned near the burner assembly, it detects flame rollout or excessive stack temperatures caused by a blocked flue or restricted combustion airflow, immediately cutting power to the gas valve to prevent unsafe operation.
Rollout switches are life-safety devices. The OEM B1370254 carries the exact trip temperature and bracket profile Goodman engineered for this platform. A repeated trip usually signals an underlying combustion or venting problem — replacing with an OEM switch and diagnosing the root cause is essential. Generic substitutes are not recommended here.
Easy–Moderate (2/5). Access requires removing the burner-compartment door; disconnect power and shut off gas first. Transfer the two leads and remount. If the switch tripped, have a technician inspect the flue and heat exchanger before returning the unit to service.