Liebert GXT2-6000 RT208 User Manual page 44

Table 6 Troubleshooting guide
Problem
Fault and Bypass indicators
and diagnostic indicator B are
illuminated.
Fault and Bypass indicators
and diagnostic indicator E are
illuminated.
Fault and Bypass indicators
and diagnostic indicators A
and B are illuminated.
Fault indicator and diagnostic
indicators A and C are
illuminated.
Fault indicator and diagnostic
indicators A and D are
illuminated.
Fault indicator and diagnostic
indicators B and C are
illuminated.
Fault indicator and diagnostic
indicators B and D are
illuminated.
Fault indicator and diagnostic
indicators C and E are
illuminated.
Fault indicator and diagnostic
indicators D and E are
illuminated.
AC Input indicator is On &
Battery indicator is flashing.
Bypass indicator is flashing.
Cause
UPS internal DC bus
overvoltage.
UPS inverter fault.
Inverter-to-Inverter
Communications Failure
UPS failed the battery test.
L1 to L2 phase angle
unacceptable.
REPO is currently activated.
UPS output is OFF from a
previous REPO command.
REPO is no longer activated.
UPS shutdown due to a
command from the
communications port(s).
UPS charger fault.
Battery source is not
available; continuous horn.
Bypass voltage is present,
but is disabled for use
because the voltage or
frequency is outside
acceptable limits.
UPS requires service. Contact your local dealer, Liebert
representative or the Liebert Worldwide Support Group.
UPS requires service. Contact your local dealer, Liebert
Representative or the Liebert Worldwide Support Group.
UPS requires service. Contact your local dealer, Liebert
Representative or the Liebert Worldwide Support Group.
Replace batteries. Contact your local dealer, Liebert
representative or the Liebert Worldwide Support Group.
Only phase angles of 120, 180 or 240 degrees (±10
degrees) are permitted. These must be compatible with
the selections in the configuration program.
Or the phase angle has changed while the UPS was
running. The phase angle is detected at startup and
cannot be changed to a different power source while
running.
Turn the UPS Off and wait until the fans stop. Apply input
AC power. The UPS will reprogram the phase angle to
match the utility, if the utility is 120, 180 or 240 degrees
between L1 and L2. If this does not resolve the issue,
contact a qualified electrician to verify the site wiring.
UPS has shut down due to the REPO (Remote Emergency
Power Off). The output cannot be started by any method.
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).
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.
UPS requires service. Contact your local dealer, Liebert
Representative or the Liebert Worldwide Support Group.
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.
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.
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Troubleshooting
Solution