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The Goodman 0130F00038 Auxiliary Limit Switch (identified by its light blue housing) is a genuine OEM thermal safety control for the Amana/Goodman AMVC960603BNBA furnace and related AMVC96 models. Mounted near the blower or heat exchanger, it opens the control circuit if temperatures climb past its rated trip point — protecting the furnace from overheating caused by restricted airflow, a dirty filter, or blower failure. A tripped or failed auxiliary limit is a common cause of no-heat and intermittent shutdown calls.
The OEM variant guarantees the exact trip temperature encoded by the light-blue color — critical for a safety device. The Generic variant is a budget equivalent; only substitute one matched to the identical temperature rating. Never install a limit switch with a different color/temperature code.
Rated Easy (15 minutes). De-energize the furnace, note wire positions, remove the two mounting screws, transfer the spade connectors, and secure the new switch. Verify the color code matches the original before installing, then confirm normal heat operation.