LEGRAND KEOR HPE Manuel De Fonctionnement page 215

Alarm
Description
Possible
causes
Solutions
Alarm
Description
Possible
causes
Solutions
Alarm
Description
Possible
causes
Solutions
Alarm
Description
Possible
causes
Solutions
Alarm
Description
Possible
causes
Solutions
56 OMP06263 REV. B
UPS user manual
Manuel de l'utilisateur de l'ASI
Utilizzo dell'UPS
A25 INVERTER OFF
The inverter is blocked due an operation failure.
 Various.
1. Reset the system.
2. If the alarm persists, contact our Technical Support Service.
A26 INTERNAL CPU ERROR
Internal error.
 Microcontroller communication problems.
1. If the alarm persists, contact our Technical Support Service.
A27 EEPROM ERROR
The controller has detected an error in the parameters stored in
EEPROM.
 Wrong parameters entered during programming.
1. Contact our Technical Support Service.
A28 CRITICAL STOP
An alarm has been activated which causes the shutdown of part of the
UPS (rectifier, inverter, static switch).
 System failure.
1. Check which alarms are present and carry out the indicated
procedures.
2. If the alarm persists, contact our Technical Support Service.
A29 MAINTENANCE REQUIRED
It is necessary to carry out maintenance work.
 The time limit since the last maintenance work has elapsed.
1. Contact our Technical Support Service.