Wärtsilä JOVYSTAR COMPACT L
BAX 5624
- 77 -
Alarm
A28
CRITICAL FAULT
Description
An alarm has been activated which causes the shutdown of part of the UPS
(rectifier, inverter, static switch).
Possible
causes
System failure.
Solutions
1. Check which alarms are present and carry out the indicated procedures.
2. If the alarm persists, contact our Technical Support Service.
Alarm
A29
MAINTENANCE REQ
Description
It is necessary to carry out maintenance work.
Possible
causes
The time limit since the last maintenance work has elapsed.
Solutions
1. Contact our Technical Support Service.
Alarm
A30
COMMON ALARM
Description
Common alarm.
Possible
causes
At least one alarm is present.
Solutions
1. Check which alarms are present and carry out the indicated procedures.
Alarm
A31
MBCB BUS CLOSED
Description
The manual bypass isolator is closed.
Possible
causes
Manual bypass isolator closed.
Solutions
1. Check the status of the manual bypass isolator.
2. Check the functionality of the auxiliary contact of the isolator.
3. If the alarm persists, contact our Technical Support Service.
Alarm
A32
EPO BUS CLOSED
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
A33
ASYMMETRIC LOAD
Description
The positive and negative voltages measured on the DC capacitors towards the
middle point are different.
Possible
causes
Failure on the measuring circuit.
Fault of DC capacitors.
Solutions
1. Reset the system.
2. If the alarm persists, contact our Technical Support Service.
Alarm
A34
SERVICE REQUIRED
Description
A UPS check is necessary.
Possible
causes
UPS fault.
Solutions
1. 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
1. Wait for the diesel generator to stop as soon as the mains voltage is restored.
2. Check the connection of the auxiliary contact which signals the diesel generator
start, to terminals X10-11/12.
3. If the alarm persists, contact our Technical Support Service.