Where is the reset button in a Stiebel Eltron?

The location of the reset button in a Stiebel Eltron depends on the model you have, but it is almost always inside the unit and requires removing the front cover after turning off power. For the popular Tempra tankless water heater series like Tempra 12, 15, 24, 29, and 36 Plus, there are actually two high-limit reset buttons located on top of the heating module inside the metal casing. To access them, you must turn off all associated circuit breakers, remove the front cover with a screwdriver, and look for two small black or red buttons on the cylindrical heating assembly near the top, often labeled reset or high limit. You press them firmly until you hear a click. For Stiebel Eltron wall-mounted room heaters like the CK series, the reset is usually an automatic thermal cutout that resets itself once the unit cools down, but some models have a small recessed reset button on the side or bottom near the thermostat. For DHB-E tankless models sold in Europe, the reset is behind the lower cover. Never attempt to reset while power is on, and if the reset keeps tripping repeatedly, it indicates a deeper issue like a failed element or blocked filter that needs professional service.