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The Goodman/Amana 0130F00038 Auxiliary Limit Switch (identified by its light-blue body) is a genuine OEM secondary safety control for AMEC960603 series gas furnaces. Typically mounted on the blower housing or near the coil, this auxiliary limit provides a second layer of over-temperature protection beyond the primary limit — opening the control circuit to shut down operation if heat builds up due to restricted airflow, a stuck blower, or a blocked coil. The color coding identifies its specific trip temperature, so matching it exactly is essential.
The light-blue color denotes a precise factory trip point. Installing a switch of the wrong temperature rating — common with generic replacements — can cause nuisance trips or leave the furnace unprotected. Always match the OEM color and part number; the genuine 0130F00038 guarantees the correct setpoint and terminals.
Easy (2/5). Shut off power and gas, disconnect the spade terminals, remove the mounting screws, and install the replacement in the same location and orientation. Basic hand tools only.