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This genuine OEM Goodman manual-reset limit switch is a direct-fit replacement for the WFD195090S5DAA gas furnace. Unlike auto-reset limits, a manual-reset switch latches open when it senses an overheat or flame-rollout event and must be physically reset with its button — a deliberate safety design that forces a technician to inspect the cause before the furnace can run again.
The OEM switch is calibrated to Goodman's specified trip temperature and mounts exactly to the burner/rollout bracket — the correct choice for this safety device. A Generic equivalent offers matching form and function at a lower cost. Because this switch guards against rollout, we recommend OEM to guarantee the precise cut-out point.
Easy (2/5). Cut power, remove mounting screws, transfer the wire leads, reinstall, and press reset. If it trips again, diagnose the underlying overheat/rollout cause. Typical install time: 15–20 minutes.