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The Goodman 10123533 Manual Reset Limit Switch is a genuine OEM safety control for the WGFM295115V5DAA gas furnace. This high-limit / rollout switch opens the control circuit if it senses excessive temperature or a flame rollout condition, shutting the furnace down to prevent overheating and unsafe operation. Because it is a manual-reset design, it must be physically reset after tripping — a deliberate safeguard that ensures the underlying fault is inspected before the furnace runs again.
Safety switches must trip at the exact temperature Goodman engineered for this furnace. This OEM switch is calibrated to the correct set point and bracket geometry, so it protects the heat exchanger without nuisance tripping. Generic limit switches with mismatched temperature ratings can either fail to protect the unit or shut it down prematurely — neither is acceptable on a combustion safety device.
Disconnect power, note the wiring, remove the two mounting screws, transfer the leads to the new switch, and remount. The job typically takes 15–20 minutes. Important: if this switch tripped, diagnose the root cause — dirty filter, blocked vent, failed inducer, or cracked heat exchanger — before returning the furnace to service.
Protect your equipment with the authentic Goodman 10123533 manual reset limit switch.