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5.1.6 Password setting
When you need to set the password for the inverter, set FF.00 as a non-zero value, exit
the editing status, leave the inverter for five mins without any operation and the
password you just set becomes effective. Press the PRG button to enter the function
codes setting, it displays 0.0.0.0, it requires the passward now to enter next. If you
want to cancel the passward, just set FF.00 as 0.