On an electric water heater, the high-limit switch reset button is located behind the upper metal access panel and insulation blanket, directly on the surface of the upper thermostat dial. It is typically a small red or yellow button labeled "Reset." On standard gas water heaters, there is generally no reset button; instead, they feature a pilot light assembly or electronic ignition control module with a status indicator light. Callout type="warning" title="Hygiene Warning": Turn off the circuit breaker supplying power to an electric water heater before removing access panels. Verification: Press the reset button firmly until you hear a click, indicating the safety switch has reset.
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