31
Symptom
Possible cause
Remedy
The warning code 02 is shown, the
icon
flashes on LCD display, and
alarm beeps every second.
The input neutral wire is
disconnected.
Check and correct the input
neutral connection. If the
connection is ok and the alarm
is still displaying, please refer
to the LCD setting section, to
enter the neutral loss check
menu, to see if the parameter3
is “CHE”, if it is, please press
the “Enter” key firstly to make
the “CHE” flash and press the
“Enter” key secondly to make
the UPS clear the alarm. If the
warning still exists, please
check input fuses of L2 and L3.
The L2 or L3 input fuse is
broken.
Replace the fuse.