LEGRAND KEOR HPE Manuel De Fonctionnement page 220

Alarm A30
Description Common alarm.
Possible
causes
Solutions
Alarm A31
Description The manual bypass isolator is closed.
Possible
causes
Solutions
Alarm A32
Description The system is blocked due to the activation of the emergency power off
button.
Possible
causes
Solutions
Alarm A33
Description The positive and negative voltages measured on the DC capacitors
towards the middle point are different.
Possible
causes
Solutions
Alarm A34
Description A UPS check is necessary.
Possible
causes
Solutions
54 OMG38225 REV. F
UPS user manual
Manuel de l'utilisateur de l'ASI
Utilizzo dell'UPS
COMMON ALARM
 At least one alarm is present.
1. Check which alarms are present and carry out the indicated
procedures.
MBCB BUS CLOSED
 Manual bypass isolator closed.
1. Check the status of the manual bypass isolator.
2. Check the functionality of the auxiliary contact of the isolator.
3. If the alarm persists, contact our Technical Support Service.
EPO BUS CLOSED
 Activation of the (local or remote) emergency power off button.
1. Release the emergency power off button and reset the alarm.
2. If the alarm persists, contact our Technical Support Service.
ASYMMETRIC LOAD
 Possible failure on the measuring circuit.
 Possible fault of DC capacitors.
1. Reset the system.
2. If the alarm persists, contact our Technical Support Service.
SERVICE REQUIRED
 Possible UPS fault.
1. If the alarm persists, contact our Technical Support Service.