AEG UPS 10 kVA, User Manual, Page: 46 / 56

46 OMD94016 REV. C
Alarm A12 STOP TIMEOUT SC
Description
Inverter shutdown due to an extended short-circuit during a
power failure, or due to an overcurrent on the inverter
bridge input.
Possible
causes
•
Short-circuit on the loads during a power failure.
•
Inverter bridge fault.
•
Temporary current peak.
Solutions
1) Reset the system.
2) If the alarm persists, contact our Technical Support
Service.
Alarm A13 INV OUT OF TOL
Description The inverter voltage or frequency is out of tolerance.
Possible
causes
•
Inverter shutdown due to an alarm.
•
Inverter failure.
Solutions
1) Check which alarms are present and carry out the
indicated procedures.
2) If the alarm persists, contact our Technical Support
Service.
Alarm A14 BYPASS WR SEQ
Description The phase rotation of the bypass 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 A15 BYPASS FAULT
Description
The voltage or frequency of the bypass line is out of
tolerance.
Possible
causes
•
Bypass line 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.