English 28
pressed, it shows the leakage protection device fails; If the reset button is pressed down and
bounce up again, then it shows the circuit leaks or power supply fails.
If the indicator lights up, the thermostat will automatically control the temperature. When the water
temperature inside the heater has reached the set temperature, it will switch off automatically, when
the water temperature falls below the set point the heater will be turned on automatically to restore the
heating.
4.2 Operating of the Unit
4.2.1 ES 10D, ES 15D, & ES 30D
Rotate the knob according to the marking on the knob to increase or decrease the setting
temperature.
The green “Power” LED and red “Heating” LED remain ON while there is power to the system.
The red LED will turns off when the water temperature reaches the user setting, at the end of the
heating phase.
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