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The Goodman 0130F00038 Auxiliary Limit Switch is a genuine OEM safety control for the Goodman/Amana AMH80453AXCC gas furnace. Identified by its light blue housing, this auxiliary (secondary) limit adds an extra layer of over-temperature protection, opening the circuit to stop the burners if a specific zone of the furnace exceeds its safe temperature. As with all furnace limits, the color denotes the factory trip temperature, so the exact part must be used.
This is a calibrated safety device, and the trip temperature must match the furnace's design. The OEM 0130F00038 (light blue) carries the correct rating — a mismatched aftermarket switch can trip prematurely or fail to protect against an actual fault. For safety controls, only the OEM part should be installed.
Easy. Typically mounted with screws and connected by spade terminals. Disconnect power before servicing, and have a qualified technician confirm proper operation. Never bypass or jumper a limit switch.
Match the color and part number to your existing switch before ordering.