TROUBLESHOOTING
The information below indicates various symptoms a user may encounter in the event the Liebert GXT2U 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 illumi- nated to provide a diagnostic aid to the operator, as described below:
Fault
E
BYPASS
D
C | UPS ON |
|
B BATTERY
A
AC
INPUT
This example shows the UPS
on bypass due to output overload.
A B C D E Fault
AC INPUT BATTERY UPS ON BYPASS
LOAD/BATTERY
LEVEL INDICATORS
LED | Diagnosis/Audible alarm | |
Status | ||
| ||
|
| |
All LEDs | On bypass due to output overload; beep every | |
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 battery | |
Flashing | connection, completely power down and reboot UPS. | |
AC LED | ||
Flashing | grounding; continuous horn and UPS will not start. | |
Bypass LED | Utility power voltage or frequency is out of tolerance; bypass is unavailable. | |
Flashing |
|
Under fault conditions, the Fault indicators will be illuminated indefinitely while battery charger is operational, or for a maximum of 5 minutes while battery charger is not operational.
If a problem persists, consult your local dealer, Liebert representative or contact the Liebert Worldwide Support Group. Please have the UPS model number and serial number available at the time of your inquiry.
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