Troubleshooting Control Unit IV Reference Manual
6-12 529-0004 Ver.3
3. After you restart the units:
• If no warning appears, log on to COM 3 of the unit that was the master before the
units were powered off (see step 1). Synchronize the data in both units by using the
sync
command (see Chapter 3) on the unit that contains the most up-to-date
subscriber data.
• If the warning message is still on screen after you restart the units, disconnect the
faulty unit and check the RF watchdog functions (see section 6.2 for detailed
instructions).
4. If the problem persists, then the backup unit requires specialized maintenance. Contact
Electroline’s technical support department for assistance.
Master unit error
If there is a problem with the master unit, the units will switch roles, i.e. the backup unit
becomes the master. Both units will show a warning in the redundancy system section of the
startup screen. As well, the backup unit (new master unit) will indicate that there is an error
with the other unit.
Master unit:
Redundancy monitoring
system......WARNING
←
problem detected with redundancy system
Backup unit....PRESENT
←
the unit has detected another unit
Status.........BACKUP
←
this unit is currently operating as backup
Configuration..MASTER
←
this unit was set up as the master unit
Backup status..OK
←
the other unit is working properly
Backup unit:
Redundancy monitoring
system......WARNING
←
problem detected with redundancy system
Backup unit....PRESENT
←
the unit has detected another unit
Status.........MASTER
←
this unit is currently operating as master
Configuration..BACKUP
←
this unit was set up as the backup unit
Backup status..ERROR
←
problem with the other unit
1. Identify the master unit (the status line reads MASTER).
2. Power off both units and restart them (see section 6.4.3) so that the RF watchdog
circuitry is reset.
3. After you restart the units:
• If no warning appears, log on to COM 3 of the unit that was the master before the two
units were powered off (see step 1). Synchronize the data in both units by using the
sync
command (see Chapter 3) on the unit that contains the most up-to-date
subscriber data.
• If the warning message is still on screen after you restart the units, disconnect the
faulty unit and check the RF watchdog functions (see section 6.2 for detailed
instructions).
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