UPS user manual
Utilizzo dell’UPS
46
OMD91052 REV. C
Alarm
A21
THERMAL IMAGE
Description
The thermal image protection has been activated after an extended
inverter overload. The inverter is shut down for 30 minutes and then
restarted.
Possible
causes
Output overload.
Measuring circuit failure.
Solutions
1. Check the loads connected to the UPS output.
2. Should you need to restore the inverter supply immediately, reset
the system.
3. If the alarm persists, contact our Technical Support Service.
Alarm
A22
BYPASS SWITCH
Description
The “Normal/Bypass” selector has been operated.
Possible
causes
Maintenance operation.
Solutions
1. Check the selector position.
2. If the alarm persists, contact our Technical Support Service.
Alarm
A23
EPO PRESSED
Description
The system is blocked due to the activation of the emergency power off
button.
Possible
causes
Activation of the (local or remote) emergency power off button.
Solutions
1. Release the emergency power off button and reset the alarm.
2. If the alarm persists, contact our Technical Support Service.
Alarm
A24
HIGH TEMPERATURE
Description
High temperature of the heat sink on the inverter bridge or tripping of
the DC fuses which protect the inverter bridge.
Possible
causes
Fault of the heat sink cooling fans.
The room temperature or cooling air temperature is too high.
Tripping of the DC protection fuses.
Solutions
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. Check the status of the DC fuses on the inverter bridge input.
5. If the alarm persists, contact our Technical Support Service.
Summary of Contents for ASD91
Page 1: ...OPERATING MANUAL UPS MANUALE OPERATIVO UPS B8000FXS 10 15 20 30 40 50 60kVA ...
Page 2: ......
Page 4: ......
Page 6: ...Warnings and general information Avvertenze e informazioni generali 2 OMD91048 REV B ...
Page 134: ...UPS user manual Utilizzo dell UPS 6 OMD91052 REV C ...
Page 135: ...UPS user manual Utilizzo dell UPS OMD91052 REV C 7 ENGLISH LANGUAGE ...
Page 181: ...UPS user manual Utilizzo dell UPS OMD91052 REV C 53 LINGUA ITALIANA ...