Troubleshooting Guide - Liebert 700-3000 VA User Manual

PROBLEM
UPS fails to start when
on button is pressed
Battery indicator is
illuminated
UPS has reduced battery
time
Fault and Bypass
indicators and all load
level LEDs are
illuminated
Fault and Bypass
indicators and diagnostic
LED A are illuminated
Fault and Bypass
indicators and diagnostic
LED B are illuminated
Fault and Bypass
indicators and diagnostic
LED C are illuminated
Fault and Bypass
indicators and diagnostic
LED D are illuminated
Fault and Bypass
indicators and diagnostic
LED E are illuminated
Fault and Bypass
indicators and diagnostic
LED A & C are
illuminated
Fault and Bypass
indicators and diagnostic
LED C & E are
illuminated

TROUBLESHOOTING GUIDE

CAUSE
UPS is short circuited or
overloaded
Internal fuse is blown,
indicating internal fault
UPS not plugged in
UPS input protection has
opened
Mains voltage out of UPS
input range.
Batteries not fully charged
UPS is overloaded
Batteries may not be able to
hold a full charge due to age
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
overvoltage
UPS power control fault.
UPS PFC fault.
UPS inverter fault.
UPS failed the battery test.
UPS shutdown due to a
command from the
communications port(s)
Ensure UPS is off. Disconnect all loads
and ensure nothing is lodged in output
sockets. Ensure loads are not defective
or shorted internally.
Do not attempt to open or service the
UPS. Contact your dealer or LTS.
UPS is operating from battery mode,
make certain UPS is securely plugged
into the wall socket
UPS is operating from battery mode.
Save data and close applications.
Replace UPS input fuse or reset input
breaker, then restart UPS.
UPS is operating from battery mode.
Save data and close applications.
Ensure mains supply voltage is within
acceptable limits for UPS.
Keep UPS plugged in continuously at
least 24 hours to recharge batteries
Check load level display and reduce load
level
Replace batteries. Contact your dealer
or LTS for replacement battery kit
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.
Ensure UPS is not overloaded,
ventilation openings not blocked, or room
ambient temperature not excessive.
Wait 30 minutes to allow UPS to cool,
then restart UPS. IF it does not restart,
contact your dealer or LTS.
UPS requires service. Contact your
dealer or LTS.
UPS requires service. Contact your
dealer or LTS.
UPS requires service. Contact your
dealer or LTS.
UPS requires service. Contact your
dealer or LTS.
Replace batteries. Contact your dealer
or LTS.
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 LTS.
24
SOLUTION