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The Goodman 10123532 is a genuine OEM manual-reset high-limit switch built for the WGGE4360A115MAB gas furnace and compatible Goodman/Amana models. This is a combustion-safety device: if the furnace overheats or experiences flame rollout, the switch opens and locks out the burners, requiring a manual reset so a technician can find and correct the underlying fault before the furnace fires again.
The OEM 10123532 is factory-calibrated to the exact trip temperature Goodman specifies for this furnace. Because this switch is the last line of defense against overheating and rollout, using a mismatched generic with a different setpoint can either nuisance-trip or fail to protect the equipment. Always match the factory part.
Difficulty: Easy (1/5). Disconnect power, note the two wire terminals, unscrew the old switch, and install the new one in the same location with the sensing element facing the original direction. Under 15 minutes. Important: if this switch tripped, diagnose the cause (dirty filter, blocked flue, failing blower) before returning the furnace to service.
Replace a failed or worn manual-reset limit to restore safe furnace operation. Genuine Goodman safety hardware.