Message Description
System over temp
The internal heat sink temperature is too high, and the inverter is off. The alarm can only be silenced if the heat sink
temperature is lower than the alarm setting. The system can automatically start after overtemperature fault is
corrected. If an overtemperature occurs, check if :
1. The ambient temperature is too high.
2. Dust is blocking any of the UPS vents.
3. A fan fault has occurred.
Turn on fail
The UPS does not start because there is no mains/utility power or it is outside of the range of the voltage required to
supply the full load. Check the AC input power.
UPS has no output
Both Inverter and Bypass are not supplying power due to the UPS output being turned off remotely or via the LCD, or
are unavailable due to no input power or input power out of range. Check that UPS is on and input power is available.
Table 5.4 Alarm Messages (continued)
5.2.7 About Screen
The About screen offers tabs that list information about the product.
• Product tab — shows UPS identification information, firmware versions, and information about the
communication card (when the card is installed).
• Efficiency tab — shows a curve of the efficiency of your UPS model vs the load capacity used.
• Battery age tab — shows the curve of the percent state of health (SOH) of the installed battery versus time. The
UPS calculates one value per week and plots it on the graph. The values are based on the battery temperature, age, and the
actual amount of energy discharged from the battery if the battery has been discharged fully.
To view the product, efficiency, and battery age information:
1. At the main menu, select the About icon, and press Enter.
2. Use the arrow buttons to move the cursor left/right and select a tab, then press Enter to display the information
for the selected tab.
Figure 5.8 About Screen Tabs
72 Proprietary and Confidential ©2024 Vertiv Group Corp. 5 Operation and Display Panel
Vertiv™ Liebert® GXT5 UPS Installer/User Guide
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