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The Goodman 0130F00036 is a genuine OEM auto-reset high-limit switch — identified by its pink temperature-code marking — for the WFD18115S5CXCC furnace and compatible Goodman/Amana equipment. Mounted on the heat-exchanger bulkhead, it monitors supply-air temperature and opens the gas/ignition circuit if the furnace overheats, typically because of restricted airflow such as a dirty filter, blocked return, or a failed blower. The color code corresponds to a specific trip and reset temperature range set at the factory.
The pink color code exists precisely because trip temperature must match the furnace model. The OEM Goodman switch guarantees the correct set point and disc; installing a generic switch with a different trip temperature defeats overheat protection or causes constant nuisance lockouts. Match the color and part number exactly.
Easy (1/5) — Cut power, remove two screws and two spade terminals, and install the matching pink-coded switch. If the limit keeps opening, correct the underlying airflow problem rather than replacing the switch repeatedly. About 15 minutes for a technician.