Troubleshooting - LEGRAND VR61-18 Manuel De L'utilisateur

6.2

TROUBLESHOOTING

Alarm
Description
Possible
causes
Solutions
Alarm
Description
Possible
causes
Solutions
Alarm
Description
Possible
causes
Solutions
Alarm
Description
Possible
causes
Solutions
Manuel de l'utilisateur de l'ASI
A1 MAINS FAULT
The voltage or frequency of the input line are out of tolerance.
➢ Mains instability or failure.
➢ Wrong phase rotation.
1. Check the connections to the mains.
2. Check the stability of mains voltage.
3. If the alarm persists, contact our Technical Support Service.
A2 INPUT WRONG SEQ
The phase rotation on the rectifier input line is wrong.
➢ Wrong connection of power cables.
1. Check the phase rotation.
2. If the alarm persists, contact our Technical Support Service.
A3 BOOSTER STOPPED
The rectifier has been temporarily disconnected and the inverter is fed
by the battery.
➢ Instability of the AC line voltage or frequency.
➢ Possible fault in the rectifier control circuit.
1. Check the parameters of the AC line voltage.
2. Restart the device.
3. If the alarm persists, contact our Technical Support Service.
A4 BOOSTER FAULT
The rectifier has been disconnected due to an internal fault.
➢ Possible fault in the rectifier control circuit.
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.
UPS user manual
Utilizzo dell'UPS
OMP06145 REV. D 47