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Troubleshooting
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13.0 TROUBLESHOOTING
The information below indicates various symptoms a user may encounter in the event the Liebert
GXT2-10000RT208 develops a problem. Use this information to determine whether external factors
caused the problem and how to remedy the situation.
1. The Fault indicator will illuminate, indicating the UPS has detected a problem.
2. An alarm will sound, alerting that the UPS requires attention.
3. One or more additional Load Level/Battery Level indicators will be illuminated to provide a
diagnostic aid to the operator, as described below:
Table 3 Fault indicators
Indicator status Diagnosis/Audible alarm
All indicators On bypass due to output overload; beep every half-second
Indicator A On bypass due to overtemperature condition
Indicator B On bypass due to DC bus overvoltage
Indicator C On bypass due to control power supply failure
Indicator D On bypass due to PFC failure
Indicator E On bypass due to inverter failure
Indicators A&B Inverter-to-Inverter communications failure; half-second beep every 1 second
Indicators A&C UPS failed battery test; 2-second beep every 60 seconds
Indicators A&D L1 to L2 phase angle unacceptable
Indicators B&C REPO is currently activated, UPS output cannot be started by any method
Indicators B&D
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).
Indicators C&E UPS shutdown due to command from communications (RS232 or SNMP); no beep
Indicators D&E UPS is OFF due to charger overvoltage; 1-second beep every 4 seconds
AC Input indicator On &
Indicators A&C&E
On bypass due to the power module cover plate being removed or the slide bracket
moved from Manual Bypass switch
AC Input indicator On &
Battery indicator Flashing
AC input has been applied to start UPS but the batteries are either missing or below
the minimal level to allow the UPS to start; continuous audible alarm
Bypass indicator Flashing
Bypass voltage is present, but is disabled for use because the voltage or frequency is
outside acceptable limits
Fault
indicator
AB C D E
Bypass
indicator
UPS ON indicatorBattery indicator
AC Input
indicator
Load Level
indicators
Battery
indicators
DISCONTINUED
PRODUCT