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The Goodman 10123529 is a genuine OEM manual-reset limit (rollout) switch designed for VMES801005CXAA gas furnaces and compatible Goodman/Amana models. This safety device cuts power to the gas valve if it detects abnormal high temperature or flame rollout, protecting the furnace and your home from dangerous overheating.
This genuine OEM Goodman switch is calibrated to the precise trip temperature your furnace requires. Because it is a life-safety component, we strongly recommend OEM over generic universal switches, which may have incorrect set points and can either trip prematurely or fail to protect against a real rollout condition.
Replace if the switch won't reset, trips repeatedly, or shows continuity failure. A tripped rollout switch often points to an underlying issue—inspect the heat exchanger and burners before returning the furnace to service.
Easy (2/5). With power off, note the wire orientation, unclip or unscrew the switch, and install the replacement. Typically 15–20 minutes. If the switch keeps tripping after replacement, call a licensed HVAC technician.