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The Goodman 10123517 Manual Reset Limit Switch is a genuine OEM safety component for the ACVC950714CXAC gas furnace. Unlike auto-resetting limits, this manual-reset switch latches open when it senses a dangerous overheat or flame-rollout condition and must be physically reset by pressing its button — a deliberate design that forces a technician to investigate the root cause (blocked heat exchanger, failed inducer, or restricted venting) before the furnace can run again.
The OEM 10123517 carries the precise trip temperature and mounting footprint the furnace was certified with. Because this is a last-line overheat and rollout safety device, a generic substitute with the wrong rating can defeat critical protection. Always use the exact OEM part for reset-type safety switches.
Moderate (3/5). Disconnect power, transfer the wiring to the new switch, and remount in the original location. If a manual-reset switch tripped, diagnose and correct the overheat cause before returning the furnace to service.