Carrier PIC 5+ - Page 42

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Alm-416 ALM-416 ISM Fault - Starter
Fault
As above As above The ISM has received a start command and the starter has declared
a Fault.
The dry contacts connected to ISM J2-7 and J2-8 are open.
See starter display for starter Fault Code.
For Benshaw Inc. RediStart starters, view RediStart MICRO display.
For VFD, check VFD display Fault History.
Clear VFD faults with VFD keypad.
For Allen-Bradley wye delta starters with RLA > 718 A, the TR3 timer
may have expired as a result of a delayed transition.
Alm-417 ALM-417 ISM Fault - Motor
Amps Not Sensed
As above As above The ISM has not sensed sucient current for an excessive delay after
1M has closed. If LF1, verify J4 jumper on regulator card is on pins
1 and 2 (4-20mA).
Check the MOTOR CURRENT CT RATIO and the MOTOR RATED
LOAD AMPS in the ISM_CONF screen.
Check VFD OPTION in SETUP 2 screen.
Check for wiring of current transformers to the J4 ISM terminals.
Check if main circuit breaker has tripped. Check ISM_HIST screen.
Alm-418 ALM-418 ISM Fault - Excessive
Acceleration Time
As above As above Any line current remains high for an excessive time duration following
1M aux and either 2M aux or transition contact closure.
Check that inlet guide vanes are fully closed at start up.
Check ISM_HIST screen.
Check Motor Rated Load Amps in ISM_CONF screen.
Reduce condenser pressure if possible.
Alm-419 ALM-419 ISM Fault - Excessive
Motor Amps
As above As above AVERAGE LINE CURRENT > 110% for an excessive amount of time.
Check MOTOR RATED LOAD AMPS and MOTOR CURRENT CT
RATIO in ISM_CONF time.
Check ISM_HIST screen.
Check for conditions that cause excessive lift.
Check guide vane actuator for proper operation.
Conrm that guide vanes will fully close prior to start-up.
Alm-420 ALM-420 ISM Fault - Start
Transition Contact Fault
As above As above Check 1M and 2M dry contact inputs
Alm-421 ALM-421 ISM Fault - Motor
Amps When Stopped
As above As above High line current measured on any phase after power up or STOP
command.
Check the MOTOR CURRENT CT RATIO and the MOTOR RATED
LOAD AMPS in the ISM_CONF screen.
Check VFD OPTION in SETUP 2 screen.
Check ISM_HIST screen.
Check for high inrush current during power-up.
Conrm that the starter de-energizes the motor when the ISM removes
115V from ISM J9-2.
Conrm that the correct STARTER TYPE has been selected in the
ISM_CONF screen.
Alm-422 ALM-422 ISM Fault - Starter
Module Failure
As above As above Check ISM Hardware
Alm-423 ALM-423 ISM Fault - Calibration
Factor Error
As above As above Check ISM Calibration Values
Alm-424 ALM-424 ISM Fault - Invalid
Conguration Error
As above As above Check ISM Congurations
Alm-425 ALM-425 VFD Fault - Single
Cycle Dropout
As above As above Temporary loss of voltage.
Disable Single Cycle Dropout in CFGUMVFD screen.
Alm-426 ALM-426 VFD Fault - Line
Current Imbalance
As above As above Check phase to phase and phase to ground power distribution bus
voltage.
Check Line Current Imbalance% in CFGUMVFD screen. Consult
power company.
Alm-427 ALM-427 VFD Fault - High Line
Voltage
As above As above Check phase to phase and phase to ground distribution bus voltage.
Consult power company.
Alm-428 ALM-428 VFD Fault - Low Line
Voltage
As above As above Check phase to phase and phase to ground distribution bus voltage.
Consult power company.
Alm-429 ALM-429 VFD Fault - Low DC
Bus Voltage
As above As above Verify phase-to-phase and phase-to-ground line voltage. VFD Circuit
Board malfunction.
Call Carrier Service.
Alm-430 ALM-430 VFD Fault - High DC
Bus Voltage
As above As above Verify phase to phase and phase to ground line voltage.
Monitor AC line for high transient voltage conditions.
VFD Circuit Board malfunction.
Call Carrier Service
Alm-431 ALM-431 VFD Fault - VFD
Power On Reset
As above As above Temporary loss of VFD control voltage.
Check VFD control power breaker, transformer and fuses
Alm-432 ALM-432 VFD Fault - Ground
Fault
As above As above
Check for condensation on motor terminals.
Check motor power leads for phase to phase or phase to ground shorts.
Disconnect motor from VFD and megger motor.
Call Carrier Service.
Alm-433 ALM-433 VFD Fault - Line
Phase Reversal
As above As above Reverse connections of any two line conductors to circuit breaker.
Alm-434 ALM-434 VFD Fault - Motor
Overload Trip
As above As above Check VFD congurations
Any phase current > 106% RLA.
Can result from signicant load side current imbalance when running
at full load.
Check entering condenser water temperature and water ow rate.
Check Motor Rated Load Amps in CFGUMVFD screen.