On electric Bradford White water heaters, there is a physical reset button located directly on the surface of the upper thermostat behind the metal access panel and insulation blanket, typically labeled in red as "Reset". This high-limit switch trips when water temperature exceeds safe thresholds. On gas models, there is no traditional electrical reset button; instead, system lockouts triggered by thermal switch trips or pilot failures are cleared by power-cycling the unit, clearing error codes, or resetting the gas control valve according to manual safety instructions.
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