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6 TROUBLESHOOTING
6.1 GENERAL ALARMS
In case of a UPS fault, the default screen will be replaced by one of the alarm messages
indicated in the table below:
Alarm
Inverter OFF
Inverter overload
(>100 % - >125 % - >150 %)
Static switch locked
Battery test failure
Battery pre-alarm
Line unavailable
Reserve not available
Emergency UPS off
Parallel data "communication
failure"
When a UPS has a fault that cannot be solved and cannot guarantee uninterrupted power supply
for the critical load, an EMERGENCY Bypass must be made and then the equipment must be
isolated and disconnected. After this procedure, contact the Service Center.
Table 6.1: Alarms in case of UPS fault
Possible Causes
Initial activation
„
Permanent overload
„
Continuous overload on the UPS output
„
High transient loads at UPS output
„
3 unsuccessful switching attempts on
„
the inverter.
Battery test failure
„
Battery almost discharged; the inverter
„
is about to shut down
Input switch open
„
No mains line
„
The input phase sequence is not correct
„
No input voltage
„
The EPO command was triggered
„
The device is disabled due to lack of
„
communication
Troubleshooting
Action
Start the inverter
„
Check the output
„
Check the output load and restart the
„
inverter
Check for short circuit at the output
„
Check the output load and restart the
„
inverter
Check the battery
„
Check the battery fuses
„
Switch off non-essential loads
„
Check the mains voltage and the position
„
of the input switch
Check the phase sequence
„
Check the voltages of the reserve line
„
Turn off the UPS by fully opening all the
„
battery switches and fuses. Wait until
the LCD is completely off, then restart
the UPS or reset the EPO via menu 6.1
EPO RESET
Call the authorized service center
„
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