47
IOM 1264-4
WWW.DAIKINAPPLIED.COM
OPERATION
Mains Phase Loss
Displayed Text: C1 CmpVfd Phase Loss
Trigger: Compressor VFD sets the ‘Mains Phase Loss’
alarm ag for at least one second or the ‘Mains
Failure’ warning ag for at least 2.5 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 none of the
trigger condition are true
Motor Earth Leakage
Displayed Text: C1 Motor Earth Lkg
Trigger: Compressor VFD sets the ‘Earth Fault’ alarm ag
Action Taken: Rapid shutdown of unit and lock out from running
Reset: This alarm will automatically reset when the Earth
Fault ag is not set for at least 5 seconds
Compressor VFD Control Card Temp High
Displayed Text: C1 VfdCtrlCardTmpHi
Trigger: Compressor is running and VFD sets the Ctrl
Card Temp alarm ag
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 ‘Ctrl Card
Temp’ alarm ag is not set for at least one minute
Compressor Multiple Start Failure
Displayed Text: Cn CompMultiStartFail
Trigger: This alarm is actually triggered on the third occur-
rence of the below conditions within 2 hours. Prior
occurrences are events.
All of the following must be true to trigger:
Compressor Run command is on
Compressor VFD Communication Failure is not
active
Either VFD Actual Speed = 0 for more than 15
seconds OR VFD Actual Speed < 14hz for more
than 30 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
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 1 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 5
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 1 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 5
seconds
Oil Pressure Sensor Fault
Displayed Text: C1Cmp1 OOilFeedPSen
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 1 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 5
seconds
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
1 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 5 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 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 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 5 seconds
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