LEGRAND VR61-18 Manuel De L'utilisateur page 56

Alarm
Description
Possible
causes
Solutions
Alarm
Description
Possible
causes
Solutions
Alarm
Description
Possible
causes
Solutions
Alarm
Description
Possible
causes
Solutions
56 OMP06145 REV. D
UPS user manual
Manuel de l'utilisateur de l'ASI
Utilizzo dell'UPS
A40 SSI FAULT
The system has detected a failure in the static inverter switch.
➢ Possible problems on the loads.
➢ Static switch fault.
1. Check the absorption of the loads and the presence of DC
components, if any, on AC current.
2. If the alarm persists, contact our Technical Support Service.
A41 RECT ERROR LOOP
The control is not able to regulate the rectifier output voltage precisely.
➢ Regulation system failure.
1. Reset the system.
2. If the alarm persists, contact our Technical Support Service.
A44 DESATURATION (NOT AVAILABLE)
The inverter is blocked due to the operation of the desaturation sensor
of the IGBT drivers.
➢ Inverter bridge fault.
1. Reset the system.
2. If the alarm persists, contact our Technical Support Service.
A45 HIGH TEMPERATURE SSW
High temperature of the heat sink on the static switch.
➢ Fault of the heat sink cooling fans.
➢ The room temperature or cooling air temperature is too high.
1. Check the fans operation.
2. Clean the ventilation grids and the air filters, if any.
3. Check the air conditioning system (if present).
4. If the alarm persists, contact our Technical Support Service.