UPS user manual
Manuel de l’utilisateur de l’ASI
Utilizzo dell’UPS
54 OMW07104
REV.
A
Alarm
A34
SERVICE REQUIRED
Description
A UPS check is necessary.
Possible
causes
Possible UPS fault.
Solutions
If the alarm persists, contact our Technical Support Service.
Alarm
A35
DIESEL MODE
Description
The UPS is supplied by the diesel generator.
Possible
causes
The auxiliary contact which activates the diesel generator connected
to the UPS is closed, and imposes this operating mode.
Solutions
Wait for the diesel generator to stop as soon as the mains voltage is
restored.
Check the connection of the auxiliary contact which signals the diesel
generator start, to terminals XD1/XD2.
If the alarm persists, contact our Technical Support Service.
Alarm
A36
DC FASTSHUTDOWN
Description
Inverter shutdown due to the operation of the protection sensor as a result
of sudden DC voltage variations.
Possible
causes
Battery fault.
Solutions
Check the battery.
Reset the system.
If the alarm persists, contact our Technical Support Service.
Alarm
A38
INV --> LOAD
Description
The load is fed by the inverter. This alarm is active for UPS systems in “ECO”
mode, where the preferential supply is from the bypass line.
Possible
causes
Temporary changeover due to bypass line failure.
Solutions
Verify the status of the bypass line and check whether other alarms
are present.
If the alarm persists, contact our Technical Support Service.
Alarm
A40
SSI FAULT
Description
The system has detected a failure in the static inverter switch.
Possible
causes
Possible problems on the loads.
Static switch fault.
Solutions
Check the absorption of the loads and the presence of DC
components, if any, on AC current.
If the alarm persists, contact our Technical Support Service.