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Troubleshooting
41
Fault indicator and diagnostic
indicators B and C are
illuminated.
REPO is currently activated.
UPS has shut down due to the REPO (Remote Emergency
Power Off). The output cannot be started by any method.
Fault indicator and diagnostic
indicators B and D are
illuminated.
UPS output is OFF from a
previous REPO command.
REPO is no longer activated.
UPS is OFF due to previous REPO (REPO is no longer
activated). Once utility power is restored, press the OFF
button twice within four seconds (to clear the alarm), then
press the ON button to start UPS (Auto-restart is NOT
possible).
Fault indicator and diagnostic
indicators C and E are
illuminated.
UPS shutdown due to a
command from the
communications port(s).
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 local dealer, Liebert
representative or the Liebert Worldwide Support Group.
Fault indicator and diagnostic
indicators D and E are
illuminated.
UPS charger fault.
UPS requires service. Contact your local dealer, Liebert
Representative or the Liebert Worldwide Support Group.
AC Input indicator is On &
diagnostic indicators A, C and
E are illuminated.
On Internal Bypass to notify
user to move manual
maintenance bypass switch
to Bypass position.
Move manual bypass switch to the Bypass position, then
follow the instructions for replacing the UPS power module
(see 12.2 - UPS Power Module Replacement).
AC Input indicator is On &
Battery indicator is flashing.
Battery source is not
available; continuous horn.
Check battery connections, completely power down and
restart UPS.
NOTE: If the battery circuit opens while the UPS is
running, it will be detected when the next battery test is
performed.
Bypass indicator is flashing.
Bypass voltage is present,
but is disabled for use
because the voltage or
frequency is outside
acceptable limits.
The AC input powers the PFC input and serves as the
bypass source. If the AC is present but the voltage or
frequency exceeds the acceptable range for safe
operation with a load, the bypass will be disabled and this
indicator will flash, indicating that the bypass is
unavailable.
Table 5 Troubleshooting guide (continued)
Problem Cause Solution