OEM Guaranteed
Same-Day Ship
30-Day Returns
Secure Checkout
The Goodman 0130F00038 auxiliary limit switch (light blue) is a genuine OEM safety control for the Goodman ACSH960453BXAA high-efficiency gas furnace. This auxiliary high-limit monitors temperature in the blower or secondary heat-exchanger area and opens the control circuit if it detects an over-temperature condition — typically caused by restricted airflow from a dirty filter, blocked vents, or a failing blower motor. The light-blue color code corresponds to a specific factory trip temperature, so matching the exact part is critical.
Limit switches are color-coded to precise trip and reset temperatures. This genuine Goodman OEM switch guarantees the correct light-blue temperature rating and mounting footprint. A generic switch with the wrong trip point can either nuisance-trip or, worse, fail to protect the furnace — so OEM is strongly recommended for any safety control.
Easy (2 of 5). Power down the furnace, remove the two mounting screws, transfer the wire leads, and mount the new switch. Always replace with the matching color/temperature rating. If the switch keeps tripping after replacement, have a licensed HVAC technician diagnose the underlying airflow issue.