Displayed Fault
Cause
Corrective Actions
Rectifier fault
A rectifier failure occurred.
Contact technical support.
Inverter fault
The inverter is faulty.
Contact technical support.
Output short
The output connection is short-circuited.
Shut-down the equipment and contact technical support.
DC bus abnormal
The DC bus is faulty.
Contact technical support.
Charger fault
The charger is faulty.
Contact technical support.
DC/DC fault
A DC-DC charger failure occurred.
Contact technical support.
Aux power fault
An Aux power failure occurred.
Contact technical support.
Output off, voltage is not zero
Incorrect input, output and ground wiring.
Contact technical support.
System fault
Model is not set.
Contact technical support.
Communication fail
Appears when the communication is abnormal.
Contact technical support.
Table 8.2 Description of Displayed Faults
7.3 Troubleshooting UPS Issues
In the event of an issue with the UPS, see Table 8.3 below to determine the cause and solution. If the fault persists, contact
Vertiv Technical Support. Visit the Vertiv™ Liebert® GXT5 Lithium-Ion product page at
for contact
information.
When reporting a UPS issue to Vertiv, include the UPS model and serial number. These are located in several places for your
ease of location:
•
On the top panel (rack mount orientation)
•
The left side (tower orientation)
•
The rear panel
•
On the LCD select Main Menu > About
Problem
Cause
Solution
UPS fails to start
UPS is short- circuited or
overloaded
Ensure UPS is Off. Disconnect all loads and ensure nothing is lodged in output receptacles.
Ensure loads are not defective or shorted internally.
Batteries are not charged
enough or not connected
Check to ensure the internal battery is connected. If it is not, fully remove and reinstall the
battery, and try to start the unit. If the battery is connected, leave the UPS connected to input
power for 24 hours to recharge batteries, then try to start the unit.
UPS has reduced
battery backup time
Batteries are not fully charged
Keep UPS plugged in continuously at least 24 hours to recharge batteries.
UPS is overloaded
Check load level indicator and reduce the load on the UPS.
Batteries may not be able to
hold a full charge due to age
Replace batteries. Contact your Vertiv representative or Vertiv Technical Support for
replacement battery kit.
Table 8.3 Troubleshooting
7 Troubleshooting
54
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Vertiv™ Liebert® GXT5 Lithium-Ion UPS Installer/User Guide