Clearing Alarms - Daikin AGZ030E Installation, Operation And Maintenance Manual

Mechanical High Pressure Switch
Trigger: Mechanical High Pressure switch input is open and
Motor Protection input is closed for longer than one second,
and power up start delay is not active.
Action Taken: Rapid stop circuit.
Reset: This alarm can be cleared manually via the controller
keypad if the MHP switch input is closed.
Motor Protection Fault
Trigger: Motor Protection input is open and power up start
delay is not active for longer than one second.
Action Taken: Rapid stop circuit.
Reset: This alarm can be cleared manually via the controller
keypad if the input is closed.
Low OAT Restart Fault
Trigger: Circuit has failed three low OAT start attempts.
Action Taken: Rapid stop circuit.
Reset: This alarm can be cleared manually via the keypad or
via BAS command.
No Pressure Change After Start
Trigger: After start of compressor, at least a 7 KPA (1 PSI)
drop in evaporator pressure OR 35 KPA (5.1 PSI) increase in
condenser pressure has not occurred after 30 seconds. The
actual alarm will not be triggered until the second occurrence.
This counter should be reset every day at midnight.
Action Taken: Rapid stop circuit.
Reset: This alarm can be cleared manually via the keypad or
via BAS command.
Evaporator Pressure Sensor Fault
Trigger: Triggered when sensor is shorted or open for longer
than one second. However the fault should not be triggered
due to the input signal reading too high unless the circuit has
been running for longer than 90 seconds or the OAT is less
than 40.56°C (105°F).
Action Taken: Rapid stop circuit.
Reset: This alarm can be cleared manually via the keypad or
BAS command, but only if the sensor is back in range.
Condenser Pressure Sensor Fault
Trigger: Sensor shorted or open for longer than one second.
Action Taken: Rapid stop circuit.
Reset: This alarm can be cleared manually via the keypad or
BAS command, but only if the sensor is back in range.
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Suction Temperature Sensor Fault
Trigger: Sensor shorted or open for longer than one second
and Expansion Valve Type = Electronic.
Action Taken: Normal shutdown of circuit.
Reset: This alarm can be cleared manually via the keypad or
BAS command, but only if the sensor is back in range.
Circuit Warning Alarm
Failed Pumpdown
Trigger: Circuit state = pumpdown for longer than 2 minutes.
Action Taken: Rapid stop circuit.
Reset: N/A.
Alarm Logs
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. Reference Figure 60
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.
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.
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 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.
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