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The Goodman 0130F00038 Auxiliary Limit Switch (light-blue body) is a genuine OEM temperature-actuated safety control for the Amana/Goodman AMVC80805CNCA furnace and compatible models. It provides a secondary overheat cutout that de-energizes the gas valve if temperatures in its zone exceed the factory trip point — backing up the primary high limit to keep the furnace operating within safe limits.
The light-blue color code identifies the specific trip temperature for this location in the cabinet. Using the correct color-rated switch is essential; a mismatched limit can trip too early (nuisance no-heat) or too late (unsafe overheat).
The OEM 0130F00038 is calibrated to the exact trip temperature indicated by its light-blue coding and matches the furnace's mounting and terminal layout. Generic limits often carry different trip points and can compromise safety response. For any limit/safety control, we recommend matching the OEM part and color rating exactly.
Easy (1/5). Shut off power and gas, note the wiring, disconnect the spade terminals, remove the mounting screws, install the new light-blue switch in the same position and orientation, and reconnect. A quick 10–15 minute swap. If it trips after replacement, investigate the airflow or overheat cause rather than bypassing the switch.