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9. TROUBLESHOOTING
If the UPS system does not function properly, please resolve the problem
by referring to the table below and on the following page.
9.1 Troubleshooting Table
Symptom
No warning or fault indication and no alarm
even though the mains is normal.
The icon
is flashing, and the warning
code
appears on the LCD display. The
alarm beeps once every second.
The icon
is flashing, and the warning
code
appears on the LCD display. The
alarm beeps once every second.
The icon
and
the warning code appears on the LCD
display. The alarm beeps once every
second.
Fault code is shown as 27 and the icon
appears on the LCD display. The alarm
beeps continuously.
Fault code is shown as 28 and the icon
appears on the LCD display. The alarm
beeps continuously.
The icon
and
and the warning code
LCD display. The alarm beeps twice every
second.
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are flashing and
are flashing
appears on the
Possible cause
The AC input power cord
may not be firmly
connected to the input of
the UPS or to the mains.
The AC input is connected
to the UPS output.
EPO function has been
activated.
The Line and neutral con-
ductors of the UPS input
are reversed.
The external or the internal
battery is not connected
properly.
The battery voltage is too
high, or the charger may be
at fault.
The battery voltage is too
low, or the charger may be
at fault.
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.
User Manual
Remedy
Confirm that the AC
input power cord is
firmly connected to the
input of the UPS and also
to the mains.
Plug the AC input power
cord firmly to the AC input.
Set pin 1 and pin 2 on the
EPO connector in a closed
(shorted) position to dis-
able the EPO function.
Rotate the mains power
socket by 180° and then
reconnect to the UPS
system.
Check if all batteries are
properly connected.
Contact your dealer.
Contact your dealer.
Remove excess loads
from UPS output.
Remove excess loads
from UPS output.
Remove excess loads
from the UPS output. Then
shut down the UPS and
restart it.
37
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