Fault rectification

If an alarm occurs, the red alarm LED on the front of units with a display lights up or the alarm LED on a connected display starts to flash. The LED only stops flashing when there are no more unconfirmed alarms.

Each alarm is recorded in an alarm summary. This summary shows the type of alarm, the date and time of the alarm and the alarm class (A, B or C).

You can open the alarm overview by pressing the alarm button on the front panel. This is the button with the red tip.

If several alarms are active, this is indicated by vertical arrows on the right-hand side of the display. Use the [▼] and [▲] buttons to display other alarms.

The status of the displayed alarm is shown at the bottom left of the display. This line is empty if the alarm is active and has not yet been acknowledged. Alarms that have been reset are indicated by Confirmed. Alarms that are still active or blocked are indicated by Confirmed or Blocked.

You acknowledge an alarm by pressing [OK]. You can then acknowledge or block the alarm.

An acknowledged alarm remains in the overview until the alarm input signal is reset. After acknowledging all alarms (after rectifying the cause) and switching the unit on and off with the isolating switch, the unit is completely reset.

Blocked alarms remain in the overview until the alarm is reset and the block is cancelled. As long as the lock is active, no new alarms of the same type are activated.