Carrier SmartVu Control Manual page 111

Alm-354 Sensor Fault - Heat
Reclaim Leaving Temp
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
Alm-404 ALM-404 ISM Fault -
Line Current Imbalance
SRDC-UG-2-14-000
19 Series Carrier®
–
TM
SmartVu
Controls IOM
As above As above
Manual Unit shuts
down.
As above As above
As above As above
As above As above
As above As above
REVISION DATE
2.3 Dec 4, 2020
Tested when the compressor is on
whatever the run status and the
communication between Main board and
IOBs is ok, If heat water entering
temperature is outside the range of -39.5
to 244.5°F
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.
Current imbalance > CURRENT %
IMBALANCE for greater than the
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