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The Goodman 0130F00038 Auxiliary Limit Switch (Light Blue) is a genuine OEM thermal safety control for the AMVC80803BXBC gas furnace and compatible Goodman/Amana units. This secondary limit protects a specific zone of the furnace — such as the blower compartment or burner box — by cutting power to the gas valve if temperatures exceed the switch's rated trip point. The light-blue color code identifies its factory calibration temperature, so matching the exact part is critical for correct protection.
This genuine OEM switch trips at the precise temperature Goodman engineered for this location. Because the trip point is identified only by the light-blue color, substituting a generic limit risks the wrong calibration — allowing overheating or causing nuisance shutdowns. OEM guarantees the correct rating and fit.
Easy (1/5). Mounts with one or two screws and push-on wire terminals. Disconnect power before servicing and confirm the replacement's color code matches the original. Test furnace operation after installation.