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The Goodman 10123535 Red Manual Reset Limit Switch is a genuine OEM safety control for the GKS90704CXAC gas furnace. The red-button manual reset switch guards against flame rollout and over-temperature conditions near the burner assembly, cutting the ignition circuit if flames or heat escape the intended path. Its manual reset requires an operator to acknowledge and clear the trip, ensuring dangerous conditions are addressed before the furnace fires again.
Rollout and limit switches are factory-calibrated to a precise trip point matched to your furnace. Generic substitutes risk nuisance trips or, worse, failure to protect. This genuine Goodman OEM switch delivers the correct setpoint, terminals, and mounting for safe operation.
Easy to moderate (2/5). Cut power, note terminal orientation, remove the two spade connectors, unfasten the switch, and mount the new one in the same position. A repeated trip signals a combustion problem — have a licensed HVAC technician diagnose before returning the unit to service.