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4
Troubleshooting
If the UPS system does not operate correctly, please solve the problem by
using the table below.
Problem
No indication and
alarm in the front
display panel even
though the mains is
normal.
The warning code
0B.
The warning code
01.
The warning code
09.
Fault code is
shown as 43.
Possible cause
The AC input power is
not connected well.
EPO function is
activated. At this time,
the EPO switch is in
"OFF" status or the
jumper is open.
The external or
internal battery is
incorrectly connected.
UPS is overloaded.
UPS is overloaded.
Devices connected
to the UPS are
fed directly by the
electrical network via
the Bypass.
After repetitive
overloads, the UPS is
locked in the Bypass
mode. Connected
devices are fed
directly by the mains.
UPS is overload too
long and becomes
fault. Then UPS shut
down automatically.
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.
37
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