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The Goodman 0130F00038 Auxiliary Limit Switch (light-blue identifier) is a genuine OEM secondary safety control for the AMEH800603BXAB gas furnace. It provides backup over-temperature protection, opening the burner circuit if a specific zone of the furnace exceeds its safe temperature threshold.
The light-blue color denotes a specific factory trip temperature. Installing the wrong-rated generic switch can cause premature tripping or, worse, fail to open when needed. This genuine OEM part guarantees the correct set point and terminal configuration for your furnace.
Easy — usually two screws and spade-terminal wiring. Always disconnect power and gas before servicing. Verify the replacement color/rating matches the original before installing, as auxiliary limits are safety-critical.
Maintain full furnace safety protection with a factory-matched auxiliary limit switch.