46
IOM 1206-1
Alarms
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 I/O extension module
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.
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
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.
Unit Warning Alarms
External Event
Trigger:
External Alarm/Event input is open for at least
5 seconds and external fault is configured as an event.
Action Taken:
None.
Reset:
Auto clear when digital input is closed.
Bad Demand Limit Input
Trigger:
Demand limit input out of range and demand
limit is enabled. For this alarm out of range is considered
to be a signal less than 3mA or more than 21mA.
Action Taken:
Cannot use demand limit function.
Reset:
Auto clear when demand limit disabled or
demand limit input back in range for 5 seconds.
Bad LWT Reset Input
Trigger:
LWT reset input out of range and LWT reset is
enabled. For this alarm out of range is considered to be a
signal less than 3mA or more than 21mA.
Action Taken:
Cannot use LWT reset function.
Reset:
Auto clear when LWT reset is disabled or LWT
reset input back in range for 5 seconds.
