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Troubleshooting Chart
If the UPS fails to operate properly, turn off the unit and repeat the
steps in the Installation section of this manual. If the problem per-
sists, refer to the chart below:
Problem Cause Solution
UPS
will
not
start
Overload/Short
Circuit
Check the circuit protector on the rear of
the UPS. If it is tripped, reset it and restart
the UPS.
For further help, call your local dealer,
Liebert representative or the Liebert
Worldwide Support Group.
Battery disconnected
or is completely
discharged
Check for proper connection of battery or
batteries.
UPS starts
on battery,
but will
not switch
to AC
UPS not plugged in Plug in the power cord securely.
Circuit protector
tripped
Reset the circuit protector and restart the
UPS.
Power not available
at utility receptacle
Have the utility checked by a qualified
electrician.
Input voltage
below threshold
Wait until the voltage rises to an
appropriate level or have the utility
checked by a qualified electrician.
AC overvoltage
Wait until voltage lowers to an
appropriate level or have the utility
checked by a qualified electrician.
UPS
shuts
down,
Fault
Indicator
lit
Overload/Short
Circuit
Check the circuit protector on the rear of
the UPS. If it is tripped, reset it and restart
the UPS.
If the problem persists, disconnect some
of the equipment from your UPS—the
total wattage of your equipment must not
exceed the capacity of the UPS.
For further help, call your local dealer,
Liebert representative or the Liebert
Worldwide Support Group.
Internal UPS fault
High temp shutdown
Make sure that the UPS is operating in
0°C to 40°C (32°F to 104°F) and that it
has adequate ventilation.
MultiLink shutdown
Consult the MultiLink user manual or
contact your LAN administrator.
UPS not
providing
expected
backup
time
Overload Reduce load.
Battery not charged
due to a recent outage
Recharge battery.
Battery needs to be
replaced
Replace battery.