Carrier SmartVu Control Manual page 114

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
SRDC-UG-2-14-000
19 Series Carrier®
–
TM
SmartVu
Controls IOM
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REVISION DATE
2.3 Dec 4, 2020
OPTION in SETUP 2 screen. Check for
wiring of current transformers to the J4
ISM terminals.
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
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Check if main circuit
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