Carrier SmartVu control User Manual

SRDC-UG-2-14-000
REVISION
DATE
PAGE
19 Series Carrier®
SmartVu
TM
–
Controls IOM
2.3
Dec 4, 2020
115 OF 168
115
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 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.
Alm-435
ALM-435 VFD Fault -
Rectifier Power Fault
As above
As above
Check VFD Status
Malfunction within VFD Power Module.
Call Carrier Service.
Alm-436
ALM-436 VFD Fault -
Inverter Power Fault
As above
As above
Check VFD Status
Malfunction within VFD Power Module.
Call Carrier Service.
Alm-437
ALM-437 VFD Fault -
Rectifier Overcurrent
As above
As above
Check VFD Status
Check for high water temperatures or
changes in water flow rates.
Alm-438
ALM-438 VFD Fault -
Inverter Overcurrent
As above
As above
Check VFD Status
Check for high entering water temperature
or low condenser water flow.
Check current settings in CFGUMVFD
screen.
Alm-439
ALM-439 VFD Fault -
Condenser High
Pressure
As above
As above
Check Compressor Discharge High
Pressure switch wiring and accuracy.
Check for high condenser water
temperatures, low water flow, fouled tubes.
Check for division plate/gasket bypass.
Check for noncondensables in refrigerant.
Alm-440
ALM-440 VFD Fault -
Motor Amps Not
Sensed
As above
As above
Check main circuit breaker for trip.
Increase Current % Imbalance in
CFGUMVFD screen.
Alm-441
ALM-441 VFD Fault -
Motor Acceleration
Fault
As above
As above
Check that inlet guide vanes are fully
closed at start-up.
Check Motor Rated Load Amps in
CFGUMVFD screen. Reduce unit pressure
if possible.
Alm-442
ALM-442 VFD Fault -
Stop Fault
As above
As above
Check Inverter Power Unit
VFD Circuit Board malfunction.
Call Carrier Service.
Alm-443
ALM-443 VFD Fault -
Rectifier Overtemp
As above
As above
Check Cooling and VFD Config.
Check that VFD refrigerant isolation valves
are open.
Check VFD refrigerant cooling solenoid
and refrigerant strainer.
Check for proper VFD cooling fan
operation and blockage.
Alm-444
ALM-444 VFD Fault -
Inverter Overtemp
As above
As above
Check Cooling and VFD Config.
Check that VFD refrigerant isolation valves
are open.

Carrier SmartVu control Specifications

General

Brand	Carrier
Model	SmartVu control
Category	Control Panel
Language	English