Troubleshooting - Njoy Garun Series User Manual

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Troubleshooting

If the UPS system does not operate correctly, please solve the problem by
using the table below.
Problem Possible cause
No indication and
alarm in the front
The AC input power is
display panel even
not connected well.
though the mains is
normal.
EPO function is
activated. At this time,
The warning code
the EPO switch is in
0B.
"OFF" status or the
jumper is open.
The external or
The warning code
internal battery is
01.
incorrectly connected.
UPS is overloaded.
UPS is overloaded.
Devices connected
to the UPS are
fed directly by the
electrical network via
The warning code
the Bypass.
09.
After repetitive
overloads, the UPS is
locked in the Bypass
mode. Connected
devices are fed
directly by the mains.
UPS is overload too
Fault code is long and becomes
shown as 43. fault. Then UPS shut
down automatically.
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Solutions
Check if input cable firmly
connected to the mains.
Set the circuit in closed
position to disable the
EPO function.
Check if all batteries are
connected well.
Remove excess loads
from UPS output.
Remove excess loads
from UPS output.
Remove excess loads
from UPS output first.
Then shut down the UPS
and restart it.
Remove excess loads
from UPS output and
restart it.
Problem Possible cause
The UPS shut
Fault code is
down automatically
shown as 14,
because short circuit
15, 16, 17, 18
occurs on the UPS
or 19.
output.
Other fault
codes are
shown on LCD A UPS internal fault
display and has occurred.
alarm beeps
continuously.
Batteries are not
Battery backup
fully charged.
time is shorter
than nominal
value.
Batteries defect.
Fan is locked or not
The warning working. Or the
code 0A. UPS temperature is
too high.
The input
neutral wire is
disconnected.
The warning
code 02.
The L2 or L3 input
fuse is broken.
Solutions
Check output wiring and if
connected devices are in short
circuit status.
Contact your dealer.
Charge the batteries for at least
7 hours and then check capacity.
If the problem still persists,
consult your dealer.
Contact your dealer to replace
the battery.
Check fans and notify dealer.
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.
Replace the fuse.
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