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The Goodman 0130F00038 is a genuine OEM auxiliary limit switch, identified by its light-blue body, for DMP150-52AB gas furnaces. This secondary high-limit control acts as a backup safety cutout, opening the burner circuit if temperatures exceed a safe threshold in its monitored zone. The color coding corresponds to a specific trip temperature, so matching the exact OEM part ensures the furnace's layered safety scheme works as designed.
The genuine Goodman OEM switch carries the exact calibrated setpoint indicated by its blue color code. Substituting a generic switch — or one with a different color/temperature rating — can defeat the furnace's designed safety margins. For safety controls, always install the correct OEM part.
Easy (1/5). Disconnect power, pull the two spade terminals, remove the mounting screws, and fit the replacement in the same location and orientation. About 10–15 minutes. Confirm the color/rating matches the removed switch before installing.