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The 0130F00038 is the OEM auxiliary limit switch (identified by its light-blue body) for the Amana/Goodman AMES801005CXAA gas furnace. This secondary thermal safety monitors a specific zone of the furnace — typically the blower or burner-box area — and opens the control circuit if temperatures exceed the safe threshold. It backs up the primary limit, guarding against overheating from restricted airflow or a blower fault.
The color band denotes an exact factory trip and reset temperature. The OEM 0130F00038 guarantees that calibration; a substitute disc with a different rating can nuisance-trip or fail to protect the furnace. Because this is a safety device, match the OEM part and its color code precisely.
Difficulty: Easy (15–20 minutes). Two spade terminals and a screw-mounted bracket. Disconnect power and gas before servicing, and confirm the replacement's color/trip rating matches the original.
Designed for the AMES801005CXAA furnace. Verify fitment with your model and serial number, or contact info@nationalhvacparts.com.