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VD (E3.1) 10/2020 page 99/179
13.3 Resetting an alarm
13.3.1 RD4 controller
Press the OK button to confirm the alarm.
• Confirmation while the state of alarm persists: Only the buzzer is muted. The visual alarm message
continues to be displayed until the alarm condition is removed. Then it is reset automatically.
• Confirmation after the alarm has ended: The buzzer and the visual alarm message are rest together.
13.3.2 MB2 controller
Normal display in state of alarm (example).
Press the Alarm icon
List of active alarms.
Press the Reset alarm icon.
Pressing the Reset alarm icon mutes the buzzer for all active alarms. The icon then disappears.
• Acknowledging while the alarm condition persists: Only the buzzer turns off. The visual alarm
indication remains on the controller display. The alarm remains in the list of active alarms.
When the alarm condition has ended, the visual alarm indication is automatically cleared. The alarm is
then no longer in the list of active alarms.
• Acknowledging after the alarm condition has ended: The buzzer and the visual alarm indication are
reset together. The alarm is then no longer in the list of active alarms.
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