Troubleshooting - Liebert UPStation GXT 2U User Manual

11.0 T
ROUBLESHOOTING
The information below indicates various symptoms a user may
encounter in the event the UPStation GXT 2U 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 detected a
problem.
2. An alarm will sound, alerting that the UPS requires attention.
3. One or more additional load/battery level LED indicators will be
illuminated to provide a diagnostic aid to the operator, as
described below:
Fault
LED status
All LEDs On bypass due to output overload; beep every half-second
A LED On bypass due to overtemperature condition; beep every 4 sec.
B LED On bypass due to DC bus overvoltage; beep every 4 sec.
C LED On bypass due to control power supply failure; beep every 4 sec.
D LED On bypass due to PFC failure; beep every 4 sec.
E LED On bypass due to inverter failure; beep every 4 sec.
A&C LEDs UPS failed battery test; long beep every minute
C&E LEDs UPS shutdown due to command from communication port
(SNMP); no beep
Battery LED Internal Battery source not available (continuous horn). Check
Flashing battery connection, completely power down and reboot UPS.
AC LED Line-to-neutral reversal in the AC input power supply or a loss of
Flashing proper grounding; continuous horn and UPS will not start.
Bypass LED Mains power voltage or frequency is out of tolerance; bypass is
Flashing unavailable.
This example shows the UPS
on bypass due to output overload.
E
BYPASS
D
UPS ON
C
B
BATTERY
A
AC
INPUT
AC INPUT BATTERY UPS ON BYPASS
Diagnosis/Audible alarm
25

Troubleshooting

A B C D
LOAD/BATTERY
LEVEL INDICATORS
E Fault