Wärtsilä JOVYSTAR COMPACT L
BAX 5624
- 76 -
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.
Alarm
A25
INVERTER OFF
Description
The inverter is blocked due an operation failure.
Possible
causes
Various.
Solutions
1. Reset the system.
2. If the alarm persists, contact our Technical Support Service.
Alarm
A26
COMMUNIC ERROR
Description
Internal error.
Possible
causes
Microcontroller communication problems.
Solutions
1. If the alarm persists, contact our Technical Support Service.
Alarm
A27
EEPROM ERROR
Description
The controller has detected an error in the parameters stored in EEPROM.
Possible
causes
Wrong parameters entered during programming.
Solutions
1. Contact our Technical Support Service.