OMM 1166-1
AGZ 025D through 190D
37
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.
EXV Module 1 Comm Failure
Trigger:
Expansion Valve Type = Electronic and
c
ommunication 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 or Expansion Valve Type = Thermal.
EXV Module 2 Comm Failure
Trigger:
Expansion Valve Type = Electronic and
c
ommunication with the I/O extension module has failed.
Action Taken:
Rapid stop of circuit 2.
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 or Expansion Valve Type = Thermal.
Unit Problem Alarms
Low Ambient Lockout (No longer an alarm from version 251699201 on)
Trigger:
The OAT drops below the low ambient lockout set point AND the OAT sensor fault is not active.
Action Taken:
Normal shutdown of all circuits.
Reset:
The lockout should clear when OAT rises to the lockout set point plus 2.8°C (5°F).
Evaporator Pump #1 Failure
Trigger:
Unit is configured with primary and backup pumps, pump #1 is running, and the pump control
logic switches to pump #2.
Action Taken:
Backup pump is used.
Reset:
This alarm can be cleared manually via the keypad or BAS command
Evaporator Pump #2 Failure
Trigger:
Unit is configured with primary and backup pumps, pump #2 is running, and the pump control
logic switches to pump #1.
Action Taken:
Backup pump is used.
Reset:
This alarm can be cleared manually via the keypad or BAS command
Summary of Contents for AGZ 190D
Page 12: ...12 AGZ 025D through 190D OMM 1166 1 Figure 2 Typical Field Control Wiring...
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