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Evaporator Pressure Sensor Fault
Displayed Text:
C1 EvapPressSenFault
Trigger:
Trigger if all of the following are true:
• UC communication with CC1 module
is OK
• sensor input voltage is less than
400mv and, for at least one second
• sensor input voltage is more than
4600mv for at least one second and
compressor running for at least 90
seconds
Action Taken:
Rapid shutdown of unit and lock out from
running
Reset:
This alarm can be cleared manually via the
Unit Controller HMI or BAS command if
sensor input voltage is 400mv to 4600mv
for at least five seconds.
Condenser Pressure Sensor Fault
Displayed Text:
C1 CondPressSenFault
Trigger:
Trigger if all of the following are true:
• UC communication with CC1 module
is OK
• sensor input voltage is less than
400mv or more than 4600mv for at
least one second.
Action Taken:
Rapid shutdown of unit and lock out from
running
Reset:
This alarm can be cleared manually via the
Unit Controller HMI or BAS command if
sensor input voltage is 400mv to 4600mv
for at least five seconds.
Oil Pressure Sensor Fault
Displayed Text:
C1Cmp1 OffOilFeedPSen
Trigger:
Trigger any time sensor input voltage is
less than 400mv or more than 4600mv
and UC communication with CC1 module
is OK, for at least one second.
Action Taken:
Normal shutdown of unit and lock out from
running
Reset:
This alarm can be cleared manually via
the Unit Controller HMI or BAS command
if sensor input voltage is 400mv to
4600mv for at least five seconds.
IOM 1264-1 • NAVIGATOR
®
MODEL WWV CHILLERS
Suction Temp Sensor Fault
Displayed Text:
C1 SuctTempSenFault
Trigger:
Trigger if UC communication with EEXV1
module is OK and any of the following are
true for at least one second:
• Sensor input value < 340 Ω
• Sensor input value > 300 kΩ
• Sensor reliability reported by control
system ≠ 'No Fault'
Action Taken:
Rapid shutdown of unit and lock out from
running
Reset:
This alarm can be cleared manually via the
Unit Controller HMI or BAS command if
sensor input value is 340 Ω to 300 kΩ and
sensor reliability = 'No Fault' for at least five
seconds.
Discharge Temp Sensor Fault
Displayed Text:
C1 DiscTempSenFault
Trigger:
Trigger if UC communication with CC1
module is OK and any of the following are
true for at least one second:
• Sensor input value < 340 Ω
• Sensor input value > 300 kΩ
• Sensor reliability reported by control
system ≠ 'No Fault'
Action Taken:
Normal shutdown of unit and lock out from
running
Reset:
This alarm can be cleared manually via the
Unit Controller HMI or BAS command if
sensor input value is 340 Ω to 300 kΩ and
sensor reliability = 'No Fault' for at least five
seconds.
Liquid Line Temperature Sensor Fault
Displayed Text:
C1 LiqTempSenFault
Trigger:
Trigger if UC communication with EEXV1
module is OK and any of the following are
true for at least one second:
• Sensor input value < 340 Ω
• Sensor input value > 300 kΩ
• Sensor reliability reported by control
system ≠ 'No Fault'
Action Taken:
Normal shutdown of unit and lock out from
running
Reset:
This alarm can be cleared manually via the
Unit Controller HMI or BAS command if
sensor input value is 340 Ω to 300 kΩ and
sensor reliability = 'No Fault' for at least
five seconds.
42
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larms and
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