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IOM 1242-2 • PATHFINDER
®
MODEL AWV CHILLERS
CC Module Comm Failure
Alarm:
CC Module Comm Failure
Displayed Text: CCn 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 of circuit and lock out
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 5 seconds.
EEXV Module Comm Failure
Alarm:
EEXV Module Comm Failure
Displayed Text: EEXVn Mod Comm Fail
Trigger:
Evaporator Expansion Valve Type is set as
an ETS model number (see
Table 31)
and
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 of circuit and lock out
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 5 seconds.
Evaporator Pressure Sensor Fault
Alarm:
Evaporator Pressure Sensor Fault
Displayed Text: Cn EvapPressSenFault
Trigger:
Trigger any time sensor input voltage is
less than 400 mv and UC communication
with CC module is OK for at least 1
second.
Trigger when sensor input voltage is more
than 4600 mv and UC communication with
CC module is OK for at least 1 second.
However, this trigger should only occur
after circuit state is Start or Run for at least
90 seconds.
Action Taken:
Rapid shutdown of circuit and lock out from
running
Reset:
This alarm can be cleared manually via the
keypad or BAS command if sensor input
voltage is 400 mv to 4600 mv for at least 5
seconds.
Condenser Pressure Sensor Fault
Alarm:
Condenser Pressure Sensor Fault
Displayed Text: Cn CondPressSenFault
Trigger:
Trigger any time sensor input voltage is
less than 400 mv or more than 4600 mv
and UC communication with CC module is
OK for at least 1 second.
Action Taken:
Rapid shutdown of circuit and lock out
from running
Reset:
This alarm can be cleared manually via the
keypad or BAS command if sensor input
voltage is 400 mv to 4600 mv for at least 5
seconds.
Oil Pressure Sensor Fault
Alarm:
Oil Pressure Sensor Fault
Displayed Text:
Cn OilPressSenFault
Trigger:
Trigger any time sensor input voltage is
less than 400 mv or more than 4600 mv
and UC communication with CC module is
OK for at least 1 second.
Action Taken:
Normal shutdown of circuit and lock out
from running
Reset:
This alarm can be cleared manually via
the keypad or BAS command if sensor
input voltage is 400 mv to 4600 mv for at
least 5 seconds.
Suction Temperature Sensor Fault
Alarm:
Suction Temperature Sensor Fault
Displayed Text: Cn SuctTempSenFault
Trigger:
Trigger if any of the following are true for
at least 1 second:
•
Sensor input value < 340 Ω
•
Sensor input value > 300 kΩ
• Sensor reliability reported by control
system ≠ ‘No Fault’
Action Taken:
Normal shutdown of circuit and lock out
from running
Reset:
This alarm can be cleared manually via
the keypad or BAS command if sensor
input value is 340 Ω to 300 kΩ and
sensor reliability = ‘No Fault’ for at least 5
seconds.
Содержание Pathfinder AWV Series
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