OMD94016 REV.
C
43
8.2
TROUBLESHOOTING
Alarm
A1
MAINS FAULT
Description The voltage or frequency of the input line is out of tolerance.
Possible
causes
•
Mains instability or failure.
•
Wrong phase rotation
Solutions
1) Check the connections to the mains.
2) Check the stability of mains voltage.
3) If the alarm persists, contact our Technical Support
Service.
Alarm
A2
INPUT WRONG SEQ
Description The phase rotation on the rectifier input line is wrong.
Possible
causes
•
Wrong connection of power cables.
Solutions
1) Check the phase rotation.
2) If the alarm persists, contact our Technical Support
Service.
Alarm
A3
BOOSTER STOPPED
Description
The rectifier has been temporarily disconnected and
the inverter is fed by the battery.
Possible
causes
•
Instability of the AC line voltage or frequency.
•
Possible fault in the rectifier control circuit.
Solutions
1) Check the parameters of the AC line voltage.
2) Restart the device.
3) If the alarm persists, contact our Technical Support
Service.
Alarm
A4
BOOSTER FAULT
Description The rectifier has been disconnected due to an internal fault.
Possible
causes
•
Possible fault in the rectifier control circuit.
Solutions
1) Check which alarms are present and carry out
the indicated procedures.
2) Restart the device.
3) If the alarm persists, contact our Technical Support
Service.
Summary of Contents for UPS 10 kVA
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