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The Goodman 10123529 Manual Reset Limit Switch is a genuine OEM high-limit safety control for the AMVC81005CXBC variable-speed gas furnace. Unlike an auto-reset limit, this manual-reset switch latches open on an over-temperature or flame-rollout event and stays open until the push-button is pressed, forcing a technician to inspect the cause before the furnace can fire again. It is a critical last line of defense against overheating and rollout conditions.
Genuine OEM manual-reset limits carry the exact trip temperature and mounting footprint specified for your furnace, ensuring the safety trips at the correct threshold. Generic switches with mismatched set points can nuisance-trip or fail to protect the unit. Because this is a safety device, OEM is the only recommended choice — and it keeps your warranty intact.
Easy (2/5) — Two-wire, screw-mounted replacement. De-energize the furnace, note the lead positions, unscrew the old switch, install the new one, and reset. If the switch had tripped, diagnose the underlying overheating cause before returning the furnace to service. About 15–20 minutes.