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6.10 Alarm handling
This menu can be used to visualize and manage every alarm occurrence.
HMI Path: Main Menu -> Alarm handling
Depending on the severity of the alarm, the AHU can assume two different behaviors:
-
Not Critical Alarm:
the AHU normal functioning is not affected, reporting only on the interface the alarm
condition. An example of not critical alarm is the indication of a dirty filter.
-
Critical Alarm:
the AHU switches to OFF state and controls remain locked until the alarm condition is
restored. An example of critical alarm is a fan fault
.
6.10.1 Alarm restore
When an alarm is displayed on the controller, follow this procedure to go back to the normal functioning:
1. Refer to
“
Alarm list
”
for an explanation of the alarm and for the indication about resolving the alarm condition.
2. When the alarm condition is restored, an alarm acknowledge command is needed on the controller:
HMI Path: Main menu -> Alarm handling -> Alarm list -> Acknowledge = Execute
3. If the alarm condition is correctly restored after the
“
Execute
”
command, the AHU goes back to normal
functioning.
