Clearing Alarms - Daikin AGZ 025D Operating & Maintenance Manual

Action Taken: Stage off one compressor on the circuit every 10 seconds while condenser pressure is
higher than the unload set point, except the last one. Inhibit staging more compressors on until the
condition resets.
Reset: While still running, the event will be reset if condenser pressure <= High Condenser Pressure
Unload SP – 862 KPA(125 PSI). The event is also reset if the circuit is no longer in the run state.
Alarm Logs
:
NOTE refer to Error! Reference source not
found. on the following page for controller
components. Press the alarm button on the
controller to go to the alarm section. Three
alarm sub-sections will appear. Turn the
navigating wheel to highlight among them and
press the wheel to select.
1. Active Alarms
When an alarm or event occurs, it appears in
the active alarm list. The active alarm list holds
a record of all active alarms not yet cleared and
includes the date and time each occurred.
When cleared, the alarm transfers to the Alarm
Log that contains an alarm history with
time/date stamp. A (+) before an alarm
indicates that it is active, a (-) indicates a
cleared alarm. The Active Alarm list is only
limited by the number of alarms since any
given alarm cannot appear twice.
2. Alarm Log
An alarm log stores the last 50 occurrences or
resets that occur. When an alarm or event
occurs, it is put into the first slot in the alarm
log and all others are moved down one,
dropping the last entry. The date and time the
alarm occurred are stored in the alarm log.
3. Event Log
An Event Log similar to the Alarm Log stores
the last 50 event occurrences. Each Event Log
entry includes an event description and a time
and date stamp for the event occurrence plus
the count of the event occurrences on the
.
OMM 1166-1
current day and for each of the last seven days.
Events do not appear in the Active Alarm list.

Clearing Alarms

Active alarms can be cleared through the
keypad/display or a BAS network. Alarms are
automatically cleared when controller power is
cycled. Alarms are cleared only if the
conditions required to initiate the alarm no
longer exist. All alarms and groups of alarms
can be cleared via the keypad or network via
LON using nviClearAlarms and via BACnet
using the ClearAlarms object.
To use the keypad, follow the Alarm links to
the Alarms screen, which will show Active
Alarms and Alarm Log. Select Active Alarm
and press the wheel to view the Alarm List (list
of current active alarms). They are in order of
occurrence with the most recent on top. The
second line on the screen shows Alm Cnt
(number of alarms currently active) and the
status of the alarm clear function. Off indicates
that the Clear function is off and the alarm is
not cleared. Press the wheel to go to the edit
mode. The Alm Clr (alarm clear) parameter
will be highlighted with OFF showing. To
clear all alarms, rotate the wheel to select ON
and enter it by pressing the wheel.
An active password is not necessary to clear
alarms.
If the problem(s) causing the alarm have been
corrected, the alarms will be cleared, disappear
from the Active Alarm list and be posted in the
Alarm Log. If not corrected, the On will
immediately change back to OFF and the unit
will remain in the alarm condition
AGZ 025D through 190D 43