Carrier SmartVu Control Manual page 116

Alm-445 ALM-445 VFD Fault -
Motor Current
Imbalance
Alm-446 ALM-446 VFD Fault -
Line Voltage Imbalance
Alm-447 ALM-447 VFD Fault -
Frequency Fault
Alm-448 ALM-448 VFD Fault -
VFD Comm Fail
Alm-449 ALM-449 VFD Fault -
VFD Fault
Alm-450 ALM-450 VFD Fault -
VFD Start Inhibit
Alm-451 ALM-451 VFD Fault -
VFD Checksum Error
Alm-452 ALM-452 VFD Fault -
Inductor Overtemp
Switch
Alm-453 ALM-453 VFD Fault -
Incompatibility Fault
Alm-454 VFD Fault - Main
Power Failure
Alm-500 VFD Fault - Brake
Check
Alm-501 VFD Fault - Power
Card Over
Temperature
Alm-502 VFD Fault - Earth Fault
Alm-503 VFD Fault - Ctrl Card
Over Temperature
Alm-504 VFD Fault - Control
Word Timeout
Alm-505 VFD Fault - Over
Current
Alm-506 VFD Fault - Torque
Limit
Alm-507 VFD Fault - Motor
Thermistor Over Temp
Alm-508 VFD Fault - Motor Etr
Over Temperature
Alm-509 VFD Fault - Inverter
Overload
Alm-510 VFD Fault - DC Link
Under Voltage
Alm-511 VFD Fault - DC Link
Over Voltage
SRDC-UG-2-14-000
19 Series Carrier®
–
TM
SmartVu
Controls IOM
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REVISION DATE
2.3 Dec 4, 2020
Check VFD refrigerant cooling solenoid
and refrigerant strainer.
Check for proper VFD cooling fan
operation and blockage.
Check Motor Current Imbalance% in
CFGUMVFD screen.
Check phase-to-phase and phase-to-
ground distribution bus voltage. Increase
Line Voltage Imbalance% in CFGUMVFD
screen.
Check Power Supply
If operating from a generator, check
generator size and speed.
Check utility power supply.
Check VFD communication wiring and
connectors.
Check status lights on DPI
Communications Interface Board.
Call Carrier Service.
Check fault code and possible cause in
corresponding type of VFD user manuals
Call Carrier Service
The VFD Start Inhibit is derived from the
Alarm bit being set in the VFD. The
conditions causing the alarm must be
corrected in the VFD to enable subsequent
starts and operation
Press Reset to Restore Configuration.
Actual VFD checksum does not match
calculated value.
Check Temp Switch and Cooling Fans.
Check for cooling fan air flow obstructions
Load compatible version files into drive
Check the main power to VFD
Refer to Danfoss VFD trouble shooting
manual
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