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The Goodman/Amana 10123535 is a genuine OEM manual reset high-limit switch designed for the AMV90453BXBA gas furnace and compatible Goodman/Amana models. This red-button safety control monitors heat-exchanger and burner-compartment temperature, opening the circuit and shutting down the burners if the unit overheats. Because it is a manual reset device, it requires a physical press of the button to restore operation after a trip — a deliberate design that forces a technician to diagnose the root cause before the furnace can run again.
The genuine OEM 10123535 is calibrated to the exact trip and reset temperatures specified by the factory, protecting your heat exchanger warranty. Generic aftermarket limit switches may use different open/close temperatures or mounting geometry, which can cause nuisance trips or fail to protect the unit. For a safety-critical control we strongly recommend the OEM part.
Easy (2/5). Two-screw mount with quarter-inch spade terminals. Always disconnect power before servicing and photograph wiring before removal. If the switch has tripped, diagnose the overheating cause (dirty filter, blocked flue, failed blower) before resetting.
Fits model: AMV90453BXBA. Confirm your part number before ordering.