LEGRAND KEOR HP Série Manuel De L'utilisateur page 51

Alarm A39
Description The control is not able to regulate the inverter voltage precisely.
 Regulation system failure.
Possible
causes
Solutions 1. Reset the system.
2. If the alarm persists, contact our Technical Support Service.
Alarm A40
Description The system has detected a failure in the static inverter switch.
 Possible problems on the loads.
Possible
causes
 Static switch fault.
Solutions 1. Check the absorption of the loads and the presence of DC
2. If the alarm persists, contact our Technical Support Service.
Alarm A41
Description The control is not able to regulate the rectifier output voltage precisely.
 Regulation system failure.
Possible
causes
Solutions 1. Reset the system.
2. If the alarm persists, contact our Technical Support Service.
Alarm A42
Description Failure of the AC protection fuses on rectifier input.
 Input overcurrent.
Possible
causes
Solutions 1. Check the fuses verifying the status of the blowing indicator.
2. Replace the blown fuses, if any.
3. Restart the system.
4. If the alarm persists, contact our Technical Support Service.
Manuel de l'utilisateur de l'UPS
INV ERROR LOOP
SSI FAULT
components, if any, on AC current.
RECT ERROR LOOP
INP FUSES BLOWN
UPS user manual
Utilizzo dell'UPS
OMD10074 REV. C 51