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The Goodman 0130F00038 is a genuine OEM auxiliary limit switch, identified by its light-blue housing, for the Amana AMES801205DXAA 80% AFUE gas furnace and related Goodman/Amana units. This normally-closed thermal safety typically mounts on the blower deck or burner box as a secondary high-limit or rollout control. If temperatures exceed the safe threshold — for example during a blower failure or flame rollout — it opens the low-voltage circuit and shuts down the furnace, backing up the primary limit.
The blue color code corresponds to a specific factory trip temperature. Installing the matching OEM 0130F00038 guarantees the correct calibration for its mounting location — substituting a different-temperature snap-disc can defeat the safety or cause nuisance shutdowns. For a redundant safety control, always match the OEM part and color.
Rating: Easy (1/5). Disconnect power, note the two-wire connection, remove the mounting screws, and fit the replacement in the same orientation — roughly 10–15 minutes. If this switch tripped, investigate airflow or flame rollout before restarting the furnace.