Liebert UPS User Manual page 31

PROBLEM
Fault indicators and all
load level LED's are
illuminated
Fault indicators and
diagnostic LED A are
illuminated
Fault indicators and
diagnostic LED B are
illuminated
Fault indicators and
diagnostic LED D are
illuminated
Fault indicators and
diagnostic LED E are
illuminated
Fault indicators and
diagnostic LED A & C
are illuminated
Fault indicators and
diagnostic LED C & E
are illuminated
TROUBLESHOOTING GUIDE
CAUSE
UPS overloaded or load
equipment is faulty
UPS internal fan has a
problem or UPS
shutdown due to
temperature condition.
Load is on bypass
power.
UPS internal DC bus
over voltage
UPS PFC fault.
UPS inverter fault.
UPS failed the battery
test.
UPS shutdown due to a
command from the
communications port(s)
Check load level display and
remove non-essential loads.
Recalculate load VA and
reduce number of loads
connected to UPS. Check load
equipment for faults.
Press Alarm silence button.
Ensure that there are no
obstructions in front panel
vents or on rear panel fans;
and UPS is not overloaded.
Once the temperature is
reduced, the UPS will restart
and transfer the connected
equipment to inverter power
automatically.
UPS requires service. Contact
your dealer or technical
support.
UPS requires service. Contact
your dealer or technical
support.
UPS requires service. Contact
your dealer or technical
support.
Replace batteries. Contact
your dealer or technical
support.
Your UPS has received a
signal or command from the
attached computer. If this was
inadvertent, ensure the
communication cable used is
correct for your system. For
assistance, contact your dealer
or technical support.
31
SOLUTION