If a fault occurs, the UPS automatically switches to Bypass Mode. The original operating mode will be
maintained only in the case of a battery disconnection fault. The fault message alternates with UPS Mode
once a second, the red fault indicator on the operation and display panel lights up and the alarm sounds
continuously.
If a fault occurs:
1. Enter the ALARM CONTROL screen, and select AUDIBLE A L AR M O N or AUDIBLE AL AR M O FF
to switch the alarm On or Off.
2. Enter the EVENT LOG screen, and select VIEW LO G to view the entire event log.
NOTE: There will be a short delay before the EVENT LOG screen displays the historical fault log to
allow the log to load.
Vertiv | Liebert GXT4 Installer/User Guide | 39
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