18
Factory Setting Function
When in the power off state, if the “BOOK” button and the “POWER”
button are pressed for 3s simultaneously; the display screen will be
fully bright; and system will enter into the factory setting mode
(buzzer will ring, if any). Then, the system will enter to the
“heating/heat preservation” state after 2s. The factory setting
parameters are shown in the following table.
The Basic Parameters of the Factory Setting System
Factory Setting Parameter
250 W (Heating at full speed)
C. ES 15DR & ES 30DR
Specific Functions of Button and Display Screen
(1) “ON/OFF” Button
This button acts as an ON/OFF operating key. When this appliance
(the water heater) is connected to the power, the display screen is
fully bright for 2s. If the power to the memory function is
disconnected (there is power outage), this appliance will return to
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