LEGRAND KEOR XPE Serie Manuel De L'utilisateur page 96

7.4 TROUBLESHOOTING POWER UNIT
Alarm
Description
Possible
causes
Solutions
Alarm
Description
Possible
causes
Solutions
Alarm
Description
Possible
causes
Solutions
Alarm
Description
Possible
causes
Solutions
96 OMAF9213 REV. C
KEOR XPE UPS user manual
Manuel de l'utilisateur de l'ASI KEOR XPE
Utilizzo dell'UPS KEOR XPE
A1 RECTIFIER MAINS FAULT
The voltage or frequency of the input line are out of tolerance range.
 Mains instability or failure.
 Check correct closure of the RCB switch.
 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 RECTIFIER INPUT WRONG SEQUENCE
The phase rotation on the recfier input line is wrong.
 Wrong connection of the power cables.
1. Check 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 rectifier control circuit fault.
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 he indicated
procedures.
2. Restart the device.
3. If the alarm persists, contact our technical support service.