36
AGZ 025D through 190D
OMM 1087-1
For the auto reset occurrences, the alarm will reset automatically when the evaporator state is Run again.
This means the alarm stays active while the unit waits for flow, then it goes through the recirculation process
after flow is detected. Once the recirculation is complete, the evaporator goes to the Run state which will
clear the alarm. After three occurrences, the count of occurrences is reset and the cycle starts over if the
manual reset flow loss alarm is cleared.
If active via trigger condition 2:
If the flow loss alarm has occurred due to this trigger, it is always a manual reset alarm.
Evaporator Water Freeze Protect
Trigger:
Evaporator LWT drops below evaporator freeze protect set point and LWT sensor fault is not active.
Action Taken:
Rapid stop all circuits
Reset:
This alarm can be cleared manually via the keypad, but only if the alarm trigger conditions no longer
exist.
Evaporator LWT Sensor Fault
Trigger:
Sensor shorted or open
Action Taken:
Normal stop all circuits
Reset:
This alarm can be cleared manually via the keypad or BAS command, but only if the sensor is back in
range.
Outdoor Air Temperature Sensor Fault
Trigger:
Sensor shorted or open
Action Taken:
Normal stop of all circuits.
Reset:
This alarm can be cleared manually via the keypad or via BAS command if the sensor is back in
range.
External Alarm
Trigger:
External Alarm/Event opens for at least 5 seconds and external fault input is configured as an alarm.
Action Taken:
Rapid stop of all circuits.
Reset:
Auto clear when digital input is closed.
Compressor Module 1 Comm Failure
Trigger:
Communication with the I/O extension module has failed.
Action Taken:
Rapid stop of circuit 1.
Reset:
This alarm can be cleared manually via the keypad or BAS command when communication between
main controller and the extension module is working for 5 seconds.
Compressor Module 2 Comm Failure
Trigger:
Communication with the I/O extension module has failed.
Action Taken:
Rapid stop of circuit 2.
Summary of Contents for AGZ-D 25
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