Table of Contents
Advertisement
Evaporator EWT Sensor Fault
Alarm:
Evaporator EWT Sensor Fault
Displayed Text:
Evap EWT SenFault
Trigger:
If any of the following occur for more than
one second:
• Resistance value is < 340 Ω
• Resistance value is > 300 kΩ
• Reliability value reported for input is
anything other than 'NoFault'
Action Taken:
Normal shutdown all circuits and lock out
unit from running
Reset:
This alarm can be cleared manually via the
keypad or BAS command if the following
are true for at least 5 seconds:
• Resistance value is from 340 Ω to
300 kΩ
• Reliability value reported for input is
'NoFault'
OAT Sensor Fault
Alarm:
OAT Sensor Fault
Displayed Text:
OAT SenFault
Trigger:
If any of the following occur for more than
one second:
• Resistance value is < 340 Ω
• Resistance value is > 300 kΩ
• Reliability value reported for input is
anything other than 'NoFault'
Action Taken:
Normal shutdown all circuits and lock out
unit from running
Reset:
This alarm can be cleared manually via the
keypad or BAS command if the following
are true for at least five seconds:
• Resistance value is from 340 Ω to
300 kΩ
• Reliability value reported for input is
'NoFault'
External Alarm
Alarm:
External Alarm
Displayed Text:
External Alarm
Trigger:
External alarm input is open for at least 1
second.
Action Taken:
Rapid shutdown all circuits and lock out
unit from running
Reset:
Auto clear when external alarm input is
closed for five seconds.
IOM 1242-8 • PATHFINDER
MODEL AWV CHILLERS
®
Emergency Stop
Alarm:
Emergency Stop
Displayed Text:
Emergency Stop Switch
Trigger:
Emergency Stop input off for 1 second
Action Taken:
Rapid shutdown all circuits and lock out
unit from running
Reset:
This alarm can be cleared manually via
the keypad or via BAS command after the
emergency switch input is on for 5 sec.
AC Module Comm Failure
Alarm:
AC Module Comm Failure
Displayed Text:
AC Module Comm Fail
Trigger:
Communication with the module has failed.
Specifically, this means the reliability value
reported for the module is anything other
than 0 for at least 3 seconds.
Action Taken:
Rapid shutdown all circuits and lock out
unit from running
Reset:
This alarm can be cleared manually via the
keypad or BAS command after reliability
value reported for the module is 0 for at
least five seconds.
Evaporator EXV Module Comm Failure
Alarm:
Evaporator EXV Module Comm Failure
Displayed Text:
EvapExvModCommFail
Trigger:
When evaporator Expansion Valve Type is
set as E6V model number (see
communication with the EVD module called
EEXV1 has failed. Specifically, this means
that 10 consecutive failures of read/write
command blocks for this modbus address
have occurred.
Action Taken:
Rapid shutdown all circuits and lock out
unit from running
Reset:
This alarm can be cleared manually
via the keypad or BAS command after
communication is restored for at least 5
seconds.
DC Fan Controller Comm Failure
Alarm:
DC Fan Controller Comm Failure
Displayed Text:
DcFanCtrlCommFail
Trigger:
Condenser Fan VFD Configuration set
point is set to All Fan VFD and heartbeat
from DC fan controller is not received for
30 seconds.
Action Taken:
Normal shutdown all circuits and lock out
unit from running
Reset:
This alarm can be cleared manually via the
keypad or BAS command if heartbeat from
DC fan controller has been received in the
last 30 seconds.
74
Alarms and Events
Table
36),
www.DaikinApplied.com
Hide quick links:
Advertisement
Table of Contents
