Njoy Garun Series, User Manual

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If the UPS system does not operate correctly, please solve the problem by
using the table below.
Problem Possible cause Solutions
No indication and
alarm in the front
display panel even
though the mains is
normal.
The AC input power is
not connected well.
Check if input cable firmly
connected to the mains.
The warning code
0B.
EPO function is
activated. At this time,
the EPO switch is in
“OFF” status or the
jumper is open.
Set the circuit in closed
position to disable the
EPO function.
The warning code
01.
The external or
internal battery is
incorrectly connected.
Check if all batteries are
connected well.
The warning code
09.
UPS is overloaded.
Remove excess loads
from UPS output.
UPS is overloaded.
Devices connected
to the UPS are
fed directly by the
electrical network via
the Bypass.
Remove excess loads
from UPS output.
After repetitive
overloads, the UPS is
locked in the Bypass
mode. Connected
devices are fed
directly by the mains.
Remove excess loads
from UPS output first.
Then shut down the UPS
and restart it.
Fault code is
shown as 43.
UPS is overload too
long and becomes
fault. Then UPS shut
down automatically.
Remove excess loads
from UPS output and
restart it.
Troubleshooting 4
Problem Possible cause Solutions
Fault code is
shown as 14,
15, 16, 17, 18
or 19.
The UPS shut
down automatically
because short circuit
occurs on the UPS
output.
Check output wiring and if
connected devices are in short
circuit status.
Other fault
codes are
shown on LCD
display and
alarm beeps
continuously.
A UPS internal fault
has occurred.
Contact your dealer.
Battery backup
time is shorter
than nominal
value.
Batteries are not
fully charged.
Charge the batteries for at least
7 hours and then check capacity.
If the problem still persists,
consult your dealer.
Batteries defect.
Contact your dealer to replace
the battery.
The warning
code 0A.
Fan is locked or not
working. Or the
UPS temperature is
too high.
Check fans and notify dealer.
The warning
code 02.
The input
neutral wire is
disconnected.
Check and correct the input
neutral connection. If the
connection is ok and the
warning 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.