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` In all levels of menu, if no action is taken for 20 seconds,
the backlight of the LCD display will switch off, the display
will automatically revert to the first item of the first level
menu, and any modifications made to the data will be stored
into internal memory
E Menu Introduction
` When the PV panel is feeding power to the inverter, the
screen shows the first-level menu.
` The initial display is the first item of the first level menu,
and the interface displays the current status of the system. It
shows “Waiting” in the initial state; it shows “Normal”
during power generation mode; if there is something wrong
with the system, an error message is shown. Please see 4.4
for fault codes.
` Short press the key once to enter the Vpv menu which
displays the PV voltage in “V”.
` Short press the key once more to enter the Ipv menu which
displays the PV current in “A”.
` Short press the key once more to enter the Vac menu which
displays the grid voltage in “V”.
` Short press the key once more to enter the Iac menu which
displays the grid current in “A”.
` Short press the key once more to enter the Frequency menu
which displays the grid frequency in “Hz”.
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