Emerson Liebert GXT3 Series - 7 Troubleshooting; UPS Symptoms; Indicators; Figure 25 Battery Level Indicator

Troubleshooting
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7.0 TROUBLESHOOTING
This section indicates various UPS symptoms a user may encounter and troubleshooting steps in the
event the UPS develops a problem. Use the following information to determine whether external fac-
tors caused the problem and how to remedy the situation.
7.1 UPS Symptoms
The following symptoms indicate the Liebert GXT3 has malfunctions.
• The related indicators will illuminate, indicating the UPS detected a problem.
• An alarm will sound, indicating that the UPS requires attention.
7.1.1 Indicators
In addition to the fault indicator being illuminated, one or more of LED segments of battery level indi-
cator will also be illuminated to provide a diagnostic aid to the user, as shown in Figure 25. The
descriptions are listed in Table 7.
Figure 25 Battery level indicator
Table 7 Indicator descriptions
Indicator Diagnosis/Audible alarm
A - E On bypass from output overload (half-second beep every half second)
A On bypass due to overtemperature condition (1-second beep every 4 seconds)
B On bypass due to DC bus overvoltage (1-second beep every 4 seconds)
C On bypass due to DC/DC power supply failure (1-second beep every 4 seconds)
D PFC failure (1-second beep every 4 seconds).
E On bypass due to inverter failure (1-second beep every 4 seconds)
A&C UPS failed battery test (2-second beep every 60 seconds)
C&E UPS shutdown by command from communication (USB port or Liebert IntelliSlot
port) (no audible)
A&B UPS Failure (includes dual-fan failure, single-fan failure under certain conditions
and battery charger failure) and continuous alarm
Battery Indicator
Flashing
Internal Battery source not available (continuous horn); check battery connection,
power down and reboot UPS.
AC Input Indicator
Flashing
Line-to-neutral reversal in the AC input power supply or a loss of proper grounding
for UPS; continuous horn and UPS cannot start in standby status
Bypass Indicator
Flashing
Utility power voltage or frequency is out of tolerance; bypass is unavailable
A - E indicators are shown in Figure 25
ABCDE