AFA4000/E VAV Airflow Controller / p.14
3.3 Alarms and events
The Sash alarm is activated, and the sash is raised above the maximum
safe working opening. Sash high alternates on/off with the velocity
reading.
The external alarm input is activated (when enabled). External alarm
alternates on/off with the velocity reading.
The airflow is at a safe velocity. Air Safe alternates on/off with the
velocity reading.
The airflow is less than the low air alarm point. Air Fail alternates on/off
with the velocity reading.
The airflow is more than the high air alarm point. High air alternates
on/off with the velocity reading.
The airflow is more than the high air cut off value. High air is displayed
without the velocity reading.
The night setback function is activated. Setback alternates on/off with
the velocity reading. The display backlight dims.
Pushbutton 3 Min function is activated. Standby alternates on/off with
the velocity reading. The display backlight dims.
The alarm disable function is activated. Alarm disable alternates on/off
with the velocity reading.
The sash is raised and the operator is not present (when activated). Close
sash alternates on/off with the velocity reading.
The emergency input is activated or if the MAX or Purge pushbuttons are
pressed. Emergency alternates on/off with the velocity reading.
The Fire alarm input is activated. Fire alarm alternates on/off with the
velocity reading.
The Hours Counter is enabled and the set hours limit is exceeded. Filter
Exp alternates on/off with the velocity reading. A revolving clock icon
displays when the fan is on and the counter is active.