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The Goodman 0130F00038 Auxiliary Limit Switch (light blue) is a genuine OEM safety control for the Amana/Goodman AMEH800805DNAB gas furnace. This secondary/auxiliary limit protects a specific zone of the furnace — such as the blower compartment or burner box — by opening the circuit and shutting down heating if temperatures exceed the safe threshold. The color-coded body (light blue) identifies its specific trip rating, so matching the exact part is important.
The OEM auxiliary limit is calibrated to the trip temperature designated by its light-blue coding for this furnace. Substituting a switch with a different rating can cause nuisance shutdowns or allow unsafe overheating. Always match the OEM part and color code for this safety-critical component.
Rating: Easy to Moderate. The switch mounts with screws and connects via spade terminals. Disconnect power before servicing. If the original tripped, investigate airflow or venting problems before returning the furnace to service.