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The Goodman 0130F00038 is a genuine OEM auxiliary high-limit switch (identified by its light blue housing) for the AMVC80704BXAB gas furnace and related Goodman/Amana models. This normally-closed thermal switch protects the furnace from overheating by opening the circuit and shutting down the burners if temperatures exceed the safe setpoint. A tripped or failed limit switch is a common cause of a furnace that heats then unexpectedly stops.
The OEM Goodman switch is factory-calibrated to the exact trip temperature required for this cabinet. The color code (light blue) corresponds to a specific temperature rating — using a generic or wrong-color switch risks either nuisance trips or unsafe operation. Always match OEM for safety limits.
Easy (1/5) — Disconnect power, note the two wire terminals, remove the mounting screws, and install the replacement in the identical location and orientation. Takes about 10-15 minutes.
This is a safety component. Disconnect all power before servicing and consult a licensed technician if unsure.