3. The water heater device is responsible for turning off the power supply when it reaches a given temperature or and if it happened that there was a failure in the electric separate parts of the equipment. This system can also refuse due to too much operating, or again due to the accumulated scale, it was also possible to have an excessively very high temperature in advance. Then, to cope with this difficulty, remove the defense casing, the edge of an ordinary pencil restore the working location of the high -precision thermostat. Check the setting of a high -precision thermostat.