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The Goodman 10123533 is a genuine OEM manual-reset high-limit / rollout safety switch, a direct-fit replacement for the AMH950453BXAE gas furnace. This normally-closed switch opens and shuts down the furnace if it detects flame rollout or excessive heat, protecting the heat exchanger and cabinet. Because it is a manual-reset design, a tripped switch stays open until pressed — a repeated trip signals an underlying issue such as a blocked flue or failing inducer.
The OEM switch is calibrated to the precise trip temperature this furnace requires. Generic switches with a different set point can trip early (nuisance no-heat) or too late (safety risk). For a flame-rollout safety device, OEM calibration is essential.
Easy — Cut power, remove two spade connectors and the mounting screws, install the new switch, and reconnect. Estimated time: 10–15 minutes.