LEGRAND VR61-18 Manuel De L'utilisateur page 53

Alarm A25
Description The inverter is blocked due an operation failure.
➢ Various.
Possible
causes
Solutions 1. Reset the system.
2. If the alarm persists, contact our Technical Support Service.
Alarm A26
Description Internal error.
➢ Microcontroller communication problems.
Possible
causes
Solutions 1. If the alarm persists, contact our Technical Support Service.
Alarm A27
Description The controller has detected an error in the parameters stored in
EEPROM.
➢ Wrong parameters entered during programming.
Possible
causes
Solutions 1. Contact our Technical Support Service.
Alarm A28
Description An alarm has been activated which causes the shutdown of part of the
UPS (rectifier, inverter, static switch).
➢ System failure.
Possible
causes
Solutions 1. Check which alarms are present and carry out the indicated
2. If the alarm persists, contact our Technical Support Service.
Alarm A29
Description It is necessary to carry out maintenance work.
➢ The time limit since the last maintenance work has elapsed.
Possible
causes
Solutions 1. Contact our Technical Support Service.
Manuel de l'utilisateur de l'ASI
INVERTER OFF
COMMUNIC ERROR
EEPROM ERROR
CRITICAL FAULT
procedures.
MAINTENANCE REQ
UPS user manual
Utilizzo dell'UPS
OMP06145 REV. D 53