Vertiv LIEBERT GXT5 Series Installer And User Guide

7 Troubleshooting
This section indicates various UPS symptoms you 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 Symptoms that Require Troubleshooting
The following symptoms indicate the UPS is malfunctioning:
• The alarm indicators illuminate, indicating the UPS has detected a problem.
• An alarm buzzer sounds, alerting the user that the UPS requires attention.
7.2 Audible Alarm (Buzzer)
An audible alarm accompanies various events during UPS operations. Table 7.1 below, describes the sounds and their
meaning. To silence an alarm, see Silencing the Audible Alarm on page33.
Sound Indicates
Continuous beep Generated when a UPS fault appears, such as a fuse or hardware failure.
One beep every 0.5 seconds Generated when a UPS critical alarm appears, such as on inverter overload.
One beep every 1 second Generated when a UPS critical alarm appears, such as on battery low voltage.
One beep every 3.3 seconds Generated when a UPS general alarm appears.
Table 7.1 Audible Alarm Descriptions
NOTE: When an alarm is indicated, an alarm message is logged. Table 5.4 on page50, describes the alarm messages
you may see. When a fault is indicated, front panel display list the fault, which are described in Table 7.2 below.
7.2.1 Faults
When the fault indicator is illuminated, the LCD displays the fault. The faults are described in Table 7.2 below.
Displayed Fault Cause Corrective Steps
Battery test fail The battery is bad or weak. Contact technical support.
Rectifier fault A rectifier failure occurred. Contact technical support.
Inverter overload, Bypass
overcurrent
The UPS is overloaded, Bypass is over current. Reduce the load and contact technical support.
Inverter fault The inverter is faulty. Contact technical support.
Battery aged The battery is bad or weak. Replace the battery.
Output short The output connection is short-circuited.
Shut-down the equipment and contact technical
support.
DC bus fail The DC bus is faulty. Contact technical support.
Table 7.2 Description of Displayed Faults
7 Troubleshooting Proprietary and Confidential ©2024 Vertiv Group Corp. 63
Vertiv™ Liebert® GXT5 UPS Installer/User Guide

Vertiv LIEBERT GXT5 Series Specifications

General

Model	LIEBERT GXT5 Series
Product Type	UPS
Topology	Double Conversion Online
Display	LCD
Form Factor	Tower, Rackmount
Output Voltage	200/208/220/230/240 VAC
Output Frequency	50/60Hz ±0.1Hz (battery mode)
Typical Backup Time	Varies by model and load
Communication Ports	USB, RS-232
Operating Temperature	0°C to 40°C (32°F to 104°F)
Relative Humidity	0% to 95% (non-condensing)
Dimensions	Varies by model
Weight	Varies by model
Certifications	UL, cUL, CE, RoHS
Battery Type	Valve Regulated Lead Acid (VRLA)