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The 0130F00038 is a genuine OEM auxiliary limit switch, color-coded light blue, for the Goodman ADSS800804BXAB gas furnace. Auxiliary limits provide a secondary layer of overheat and flame-rollout protection, monitoring temperature at a specific location in the burner or blower compartment. When the sensed temperature exceeds the factory trip point, the switch opens and de-energizes the gas valve to keep the furnace safe. The light-blue code designates its calibrated temperature rating.
Because this is a calibrated safety component, the genuine Goodman light-blue switch is matched to the exact trip temperature this furnace requires. Substituting a differently-rated generic switch risks nuisance lockouts or, worse, insufficient overheat protection. Always match the OEM color code.
Easy. Mounts with screws and connects via spade terminals. Cut power before servicing. If the auxiliary limit trips repeatedly, investigate the root cause — restricted airflow, a cracked heat exchanger, or flame rollout — before returning the furnace to service.
Order the genuine Goodman 0130F00038 light-blue auxiliary limit switch for a reliable, safe fit.