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The Goodman 0130F00038 Auxiliary Limit Switch (light blue) is a genuine OEM safety control for the Amana/Goodman AMEC960302BNAB gas furnace. This thermally activated switch monitors temperature at the blower or secondary heat exchanger area and opens the control circuit if the furnace overheats, preventing damage and hazardous operating conditions. A tripped or failed limit switch typically causes the furnace to stop heating or blow cold air.
The light-blue color code on this OEM switch corresponds to a specific trip temperature. Installing a generic switch with the wrong setpoint can either nuisance-trip or fail to protect the furnace. Genuine Goodman parts guarantee the correct temperature rating and mounting footprint.
Easy (1 of 5) — Two mounting screws and two spade connectors. Cut power at the disconnect, match the light-blue replacement to the original, and swap. Under 15 minutes for most DIYers. Verify the color code matches before installing.