Liebert GXT4 User Manual

Troubleshooting
Liebert
®
GXT4
™
40
7.0 TROUBLESHOOTING
This section indicates various UPS symptoms a user may encounter and provides a troubleshooting
guide in the event the UPS develops a problem. Use the following information to determine whether
external factors caused the problem and how to remedy the situation.
7.1 UPS Symptoms
The following symptoms indicate the Liebert GXT4 is malfunctioning:
• The relative indicators illuminate, indicating the UPS has detected a problem.
• An alarm buzzer sounds, alerting the user that the UPS requires attention.
7.1.1 Indicator and LCD
In addition to the fault indicator being illuminated, the LCD will display the fault. The displayed
fault on the LCD is described in Table 10
Table 10 Description of the displayed fault
Displayed Fault Cause Corrective Steps
UPS self test failed The battery is bad or weak. Contact customer service.
UPS shutdown
command received
The UPS shuts down through
communication.
Contact customer service.
UPS overload The UPS is overloaded.
Reduce the load and contact customer
service.
Inverter Out of Order The inverter is faulty. Contact customer service.
Battery Weak/Bad The battery is bad or weak. Replace the battery.
Output Short Circuit The output connection is short-circuited.
Shut down the equipment and contact
customer service.
DC Bus Overvoltage The DC bus is faulty. Contact customer service.
UPS Overtemperature
Over-temperature occurs to the UPS and the
UPS will transfer to Bypass mode.
Reduce the load and contact customer
service.
Charger Out of Order The charger is faulty. Contact customer service.
Fan Out of Order At least one fan is faulty. Contact customer service.
DC Bus Discharge Fail A DC-DC failure occurs. Contact customer service.
NOTE
If the UPS encounters a fault and no correction attempt is performed within 2 minutes, the
LCD backlight will flash (on 1 second and off 1 second) as an alert.
Press any button to exit the alert mode. If no correction attempt is performed on the UPS, the
LCD backlight will flash again until the UPS fault is corrected.

Liebert GXT4 Specifications

General

Form Factor	Tower/Rack Mount
Power Factor	0.9
Battery Type	Sealed Lead-Acid (SLA)
Backup Time	Varies by model and load
Waveform Type	Sinewave
Communication Ports	USB, RS-232
Topology	On-line Double Conversion
Output Frequency	50/60 Hz +/- 0.1 Hz
Typical Recharge Time	3 hours to 90%
Operating Temperature	0°C to 40°C (32°F to 104°F)
Storage Temperature	-15°C to 45°C (5°F to 113°F)
Humidity	0-95% non-condensing
Dimensions	Varies by model
Weight	Varies by model
Certifications	UL, cUL, CE, RoHS
Output Voltage	208/220/230/240VAC