IOM 1207-6 • TRAILBLAZER
®
MODEL AGZ CHILLERS
104 www.DaikinApplied.com
Alarms
The alarm also requires Evaporator Configuration = Remote
and Condenser Type = Microchannel to trigger.
Action Taken:
Rapid stop circuit.
Reset:
This alarm can be cleared manually via the controller
keypad if the MHP switch input is closed.
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:
Trigger any time sensor input voltage is less than
400mv and UC communication with CC module is OK, for at
least one second.
Trigger when sensor input voltage is more than 4600mv and
UC communication with CC module is OK, for at least one
second. However, this trigger should only occur after circuit
state is run or pumpdown for at least 90 seconds or the OAT is
less than 40.56°C (105°F).
Trigger if the evaporator approach is less than -9.44°C (-17°F)
for more than 30 seconds. This trigger should only be enabled
after the circuit state is Run for 30 seconds. The purpose of
this trigger condition is to prevent operation if the sensor is
reading high but not out of range.
Action Taken:
Rapid shutdown of circuit and lock out from
running.
Reset:
This alarm can be cleared manually via the controller
HMI or BAS command if either of the following are true for at
least five seconds:
•
OAT ≥ 40.56°C (105°F) and sensor input voltage is at
least 400mv OR
• OAT < 40.56°C (105°F) and sensor input voltage is from
400mv to 4600mv
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.
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
for controller components.
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.
Содержание Trailblazer AGZ030E-070E
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