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The Goodman 0130F00038 is a genuine OEM auxiliary limit switch, color-coded light blue, built for the Goodman/Amana ADSS800603AXAB furnace and related models. This auxiliary (secondary) limit provides a second layer of overheat protection—commonly mounted near the blower or secondary heat exchanger—shutting the burner circuit if airflow is restricted or temperatures climb beyond safe limits. The light blue color designates its specific factory trip temperature, so matching the code is essential for correct operation.
The Genuine OEM auxiliary limit is factory-calibrated to the precise trip point required by the furnace's control logic. Generic alternatives may not match the light-blue temperature spec, leading to premature tripping or inadequate protection. Because this is a safety device, OEM is strongly recommended.
Easy (1/5). Cut power to the furnace, note wire routing, remove the mounting screws, swap the spade terminals to the new switch, and reinstall. Most technicians complete the job in 10–15 minutes. Verify the light-blue color code matches the original part.
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