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The Goodman 0130F00036 is a genuine OEM auto-reset high-limit switch for the WFM18115S5CXCB furnace and compatible Goodman and Amana models. The pink color code identifies its specific factory temperature set-point — a critical detail, since limit switches are keyed by color/rating and must match the original exactly. This normally-closed switch monitors heat-exchanger temperature and opens the circuit if the furnace overheats (for example, from restricted airflow or a failed blower), then automatically resets once temperatures return to normal.
This authentic Goodman switch carries the exact trip temperature and bracket the furnace was engineered for. Substituting a different color/rating — even one that physically fits — can cause nuisance shutdowns or defeat the safety margin. For a safety-critical, temperature-keyed part, always match the OEM color code.
Easy (1 of 3). Power off, disconnect the two spade terminals, remove the mounting screws, and install the new switch in the same orientation. About 10–15 minutes. If it trips repeatedly, correct the airflow restriction or blower fault first — a limit switch that keeps opening is warning you of a real problem.