Carrier PIC 5+ User Manual page 42

Alarm
Description of the alarm text Reset type
code*
Alm-416 ALM-416 ISM Fault - Starter
Fault
Alm-417 ALM-417 ISM Fault - Motor
Amps Not Sensed
Alm-418 ALM-418 ISM Fault - Excessive
Acceleration Time
Alm-419 ALM-419 ISM Fault - Excessive
Motor Amps
Alm-420 ALM-420 ISM Fault - Start
Transition Contact Fault
Alm-421 ALM-421 ISM Fault - Motor
Amps When Stopped
Alm-422 ALM-422 ISM Fault - Starter
Module Failure
Alm-423 ALM-423 ISM Fault - Calibration
Factor Error
Alm-424 ALM-424 ISM Fault - Invalid
Configuration Error
Alm-425 ALM-425 VFD Fault - Single
Cycle Dropout
Alm-426 ALM-426 VFD Fault - Line
Current Imbalance
Alm-427 ALM-427 VFD Fault - High Line
Voltage
Alm-428 ALM-428 VFD Fault - Low Line
Voltage
Alm-429 ALM-429 VFD Fault - Low DC
Bus Voltage
Alm-430 ALM-430 VFD Fault - High DC
Bus Voltage
Alm-431 ALM-431 VFD Fault - VFD
Power On Reset
Alm-432 ALM-432 VFD Fault - Ground
Fault
Alm-433 ALM-433 VFD Fault - Line
Phase Reversal
Alm-434 ALM-434 VFD Fault - Motor
Overload Trip
42
Action taken by the
control
As above As above
As above As above
As above As above
As above As above
As above As above
As above As above
As above As above
As above As above
As above As above
As above As above
As above As above
As above As above
As above As above
As above As above
As above As above
As above As above
As above As above
As above As above
As above As above
Possible cause
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.
The ISM has not sensed sufficient 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.
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.
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.
Confirm that guide vanes will fully close prior to start-up.
Check 1M and 2M dry contact inputs
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.
Confirm that the starter de-energizes the motor when the ISM removes
115V from ISM J9-2.
Confirm that the correct STARTER TYPE has been selected in the
ISM_CONF screen.
Check ISM Hardware
Check ISM Calibration Values
Check ISM Configurations
Temporary loss of voltage.
Disable Single Cycle Dropout in CFGUMVFD screen.
Check phase to phase and phase to ground power distribution bus
voltage.
Check Line Current Imbalance% in CFGUMVFD screen. Consult
power company.
Check phase to phase and phase to ground distribution bus voltage.
Consult power company.
Check phase to phase and phase to ground distribution bus voltage.
Consult power company.
Verify phase-to-phase and phase-to-ground line voltage. VFD Circuit
Board malfunction.
Call Carrier Service.
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
Temporary loss of VFD control voltage.
Check VFD control power breaker, transformer and fuses
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.
Reverse connections of any two line conductors to circuit breaker.
Check VFD configurations
Any phase current > 106% RLA.
Can result from significant load side current imbalance when running
at full load.
Check entering condenser water temperature and water flow rate.
Check Motor Rated Load Amps in CFGUMVFD screen.