Carrier PIC 5+ User Manual page 40

Alarm
Description of the alarm text Reset type
code*
Communication Failure
Alm-300 ALM-300 Loss Communication
With ISM
Alm-301 ALM-301 Loss Communication
With IOB1
Alm-302 ALM-302 Loss Communication
With IOB2
Alm-303 ALM-303 Loss Communication
With IOB3
Alm-304 ALM-304 Loss Communication
With IOB4
Alm-305 ALM-305 Loss Communication
With IOB5
Alm-306 ALM-306 Loss Communication
With SIOB
Alm-307 ALM-307 LEN Scan Error
Alm-308 ALM-308 Loss Communication
With VFD
Alm-309 ALM-309 Loss Communication
With VFD Gateway (LEN)
Alm-310 ALM-310 Loss Communication
With VFD (Modbus)
Alm-350 Sensor Fault - 19DV 1st Stage
Bearing Temp
Alm-351 Sensor Fault - 19DV 2nd Stage
Bearing Temp
Alm-352 Sensor Fault - 19DV Pump
Output Pressure
Integrated Starter Module Alarms
Alm-400 ALM-400 ISM Fault - Line
Voltage Dropout
Alm-401 ALM-401 ISM Fault - Line
Phase Loss
Alm-402 ALM-402 ISM Fault - High Line
Voltage
Alm-403 ALM-403 ISM Fault - Low Line
Voltage
40
Action taken by the
control
Automatic when the Unit shuts down.
communication comes back
to normal
As above As above
As above As above
As above As above
As above As above
As above As above
As above As above
Manual As above
Automatic when the As above
communication comes back
to normal
As above As above
As above As above
As above As above
As above As above
As above As above
Manual Unit shuts down.
As above As above
As above As above
As above As above
Possible cause
Bus installation fault or defective slave board
Bus installation fault or defective slave board
Bus installation fault or defective slave board
Bus installation fault or defective slave board As above
Bus installation fault or defective slave board
Bus installation fault or defective slave board
Bus installation fault or defective slave board
Check LEN bus hardware physical wiring and software log
Bus installation fault or defective slave board
Bus installation fault or defective slave board
Bus installation fault or defective slave board
Tested when the compressor is on whatever the run status and the
communication between Main board and IOBs is ok, If compressor
1st Bearing Temp is outside the range of -39.5 to 244.5°F
Tested when the compressor is on whatever the run status and the
communication between Main board and IOBs is ok, If compressor
2nd Bearing Temp is outside the range of -39.5 to 244.5°F
Tested when the compressor is whatever the run status and the
communication between Main board and IOBs is ok, if Bearing Outlet
Transducer voltage outside
Temporary loss of voltage.
SINGLE CYCLE DROPOUT in the ISM_CONF screen is Enabled and
two LINE VOLTAGES < 50% MOTOR RATED LINE VOLTAGE.
Check ISM_HIST screen.
Disable Single Cycle Dropout in VFD_CONF screen.
Any LINE VOLTAGE < 50% MOTOR RATED LINE VOLTAGE or there
is an excessive difference between the smallest LINE CURRENT and
the largest LINE CURRENT.
Check the ISM_HIST screen.
Check MOTOR RATED LINE VOLTAGE in ISM_CONF screen.
Check phase to phase and phase to ground power distribution bus
voltage.
Check current transformer wiring leading to ISM terminal block J4 and
line voltage wiring leading to ISM terminal block J3.
Check wiring and hardware between building power supply and motor.
Current imbalance may improve if power or motor leads are rotated in
the same phase sequence.
Consult power company.
Medium voltage applications only: Check voltage potential transformers
and VOLT TRANSFORMER RATIO in ISM_CONF screen.
High LINE VOLTAGE for an excessive amount of time.
Check LINE VOLTAGE in ISM_HIST screen.
Check MOTOR RATED LINE VOLTAGE and OVERVOLTAGE
THRESHOLD in ISM_CONF screen.
Check phase to phase and phase to ground distribution bus voltage.
Consult power company.
Medium voltage applications only: Check voltage potential
transformers and VOLT TRANSFORMER RATIO in ISM_CONF
screen. Check wiring to ISM J3-VL1, J3-VL2 & J3-VL3.
Low LINE VOLTAGE for an excessive amount of time.
Check LINE VOLTAGE in ISM_HIST screen.
Check MOTOR RATED LINE VOLTAGE and UNDERVOLTAGE
THRESHOLD in ISM_CONF screen.
Check phase to phase and phase to ground distribution bus voltage.
Check connections to ISM terminal block J3.
Consult power company.
Medium voltage applications only: Check voltage potential transformers
and VOLT TRANSFORMER RATIO in ISM_CONF screen.
Check wiring to ISM J3-VL1, J3-VL2 & J3-VL3.