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The Goodman 10123534 Manual Reset Limit Switch is a genuine OEM high-temperature safety control for the AMVC961005CNBA modulating variable-speed furnace. This rollout/limit switch opens the gas-valve circuit if it senses abnormal heat — such as a flame rollout or blocked heat exchanger — protecting the furnace and home from overheating. Because it is a manual-reset device, it stays open until a technician inspects the cause and presses the reset button, an important safety feature.
OEM vs. Generic: The OEM 10123534 is calibrated to the exact trip temperature specified for this furnace's heat exchanger. Generic switches with mismatched trip points can nuisance-trip or, worse, fail to protect. For a safety-critical control, always fit OEM.
Install Difficulty: Moderate — requires basic tools and knowledge of furnace wiring. Shut off power and gas, note the two spade terminals, unscrew the switch from its bracket, and reverse to install. If the switch has tripped, diagnose the root cause before resetting. Professional installation recommended.