Troubleshooting - AEG UPS 10 kVA User Manual

OMD94016 REV.
C 43
8.2

TROUBLESHOOTING

Alarm A1 MAINS FAULT
Description The voltage or frequency of the input line is out of tolerance.
Mains instability or failure.
Possible
•
causes
Wrong phase rotation
•
1) Check the connections to the mains.
2) Check the stability of mains voltage.
Solutions
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
Wrong connection of power cables.
•
causes
1) Check the phase rotation.
Solutions 2) If the alarm persists, contact our Technical Support
Service.
Alarm A3 BOOSTER STOPPED
The rectifier has been temporarily disconnected and
Description
the inverter is fed by the battery.
Instability of the AC line voltage or frequency.
Possible
•
causes
Possible fault in the rectifier control circuit.
•
1) Check the parameters of the AC line voltage.
2) Restart the device.
Solutions
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
Possible fault in the rectifier control circuit.
•
causes
1) Check which alarms are present and carry out
the indicated procedures.
Solutions 2) Restart the device.
3) If the alarm persists, contact our Technical Support
Service.