Troubleshooting - Omron POWLI BU50XS Instruction Manual

11. Troubleshooting

Problem
The UPS does not operate.
Or, the AC Input Lamp does not
go on.
Battery mode is not performed.
The connected devices stop
when a power failure occurs.
Battery mode is performed too
frequently.
The display of connected de-
vices is abnormal.
• The display is unstable.
• White lines occur.
The Connection Capacity Ex-
ceeded Lamp goes on.
The Battery Replacement
Lamp goes on.
The Error Lamp goes on.
The AC Input Plug is not connected to the commercial power.
● Check that the AC Input Plug is connected to the commercial power securely.
The button is popped up from the AC Input Overcurrent Protection.
● It is suspected that there are too many connected devices or there is a short in connected
devices. Reduce connected devices or check the fuses of connected devices.
If the connected devices are normal, disconnect all of them and push the Black button into the
AC Input Overcurrent Protection, or set it to ON and connect the AC Input Plug to a wall outlet
(commercial power).
Even after this, if the AC Input Overcurrent Protection goes OFF, the product may be at fault.
It is suspected that the battery is not charged sufficiently or dead.
● Connect the AC Input Plug of the UPS to a wall outlet (commercial power) and charge it for at
least 8 hours. (Charging is performed regardless of in operation or in pause. You can choose
either of the charging methods for your convenience.)
After 8 hours, bring the UPS into operation and bring the connected devices into operation.
Disconnect the AC Input Plug of the UPS from a wall outlet (commercial power) to perform
Battery mode.
If the Battery mode is performed, the battery was not charged sufficiently.
If Battery mode cannot be performed at all or the backup time is less that the time you need,
replace the battery pack because the battery is exhausted.
Variations (decrease) in the input power occur frequently. Or, noise is included that significantly
distorts the voltage waveform of the input power.
● Change a wall outlet (commercial power) to which you connect the UPS. Attempt a wall outlet
(commercial power) away from equipment that consumes large power.
● This problem may occur also when you connect many devices to a plug strip or extension cord
connected to the UPS if it is a long or thin cable.
A probable cause is noise that occurs inside the UPS.
● Ground all devices connected to the UPS. Connect them to a wall outlet (commercial power)
for 3-pin plugs or connect their Grounding Terminal to the Grounding Terminal of a wall outlet.
● This problem may occur when power cords are long or placed closely or when the UPS and
devices to be backed up are placed closely. Change the placement of them.
● If the UPS or devices connected to the UPS are contained in a metal rack, attempt to ground
the rack itself.
The total capacity of the devices connected to the Power Supply Output Receptacles exceeds
the rated capacity.
● Reduce connected devices.
The battery is judged to be dead in the auto battery test.
● Battery mode cannot be performed and therefore replace the battery pack.
An error or faulty has occurred in the UPS.
● Stop the UPS and the connected devices.
Disconnect all the connected devices and turn on the Start Switch of the UPS only. If the normal
operation is restored, a short has occurred in one or more connected devices. Check the
connected devices.
If the problem persists, check whether the fan on the rear side is stopped. If the fan is stopped,
replace it. If the fan is not stopped, stop the UPS for 1 hour and then start operation again. If
normal operation is restored, temperature rise is suspected and therefore improve ventilation
around the UPS.
If the problem persists after 1 hour, the product may be at fault and need repair.
Contact us;
Check and remedy
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11. Troubleshooting