39
ALM-424
ISM Fault -
Invalid
Configuration
Error
Manual
Unit shuts down.
Alarm relay turns on. Check ISM Configurations
ALM-425
VFD Fault -
Single Cycle
Dropout
Manual
Unit shuts down.
Alarm relay turns on.
Temporary loss of voltage. Disable Single Cycle Dropout in
CFGUMVFD screen.
ALM-426
VFD Fault - Line
Current
Imbalance
Manual
Unit shuts down.
Alarm relay turns on.
Check phase to phase and phase to ground power distribution bus
voltage.
Check Line Current Imbalance% in CFGUMVFD screen. Consult power
company.
ALM-427
VFD Fault - High
Line Voltage
Manual
Unit shuts down.
Alarm relay turns on.
Check phase to phase and phase to ground distribution bus voltage.
Consult power company.
ALM-428
VFD Fault - Low
Line Voltage
Manual
Unit shuts down.
Alarm relay turns on.
Check phase to phase and phase to ground distribution bus voltage.
Consult power company.
ALM-429
VFD Fault - Low
DC Bus Voltage
Manual
Unit shuts down.
Alarm relay turns on.
Verify phase-to-phase and phase-to-ground line voltage. VFD Circuit
Board malfunction.
Call Carrier Service.
ALM-430
VFD Fault - High
DC Bus Voltage
Manual
Unit shuts down.
Alarm relay turns on.
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
ALM-431
VFD Fault - VFD
Power On Reset Manual
Unit shuts down.
Alarm relay turns on.
Temporary loss of VFD control voltage.
Check VFD control power breaker, transformer and fuses
ALM-432
VFD Fault -
Ground Fault
Manual
Unit shuts down.
Alarm relay turns on.
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
VFD Fault - Line
Phase Reversal
Manual
Unit shuts down.
Alarm relay turns on. Reverse connections of any two line conductors to circuit breaker.
ALM-434
VFD Fault -
Motor Overload
Trip
Manual
Unit shuts down.
Alarm relay turns on.
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
Manual
Unit shuts down.
Alarm relay turns on.
Check VFD Status
Malfunction within VFD Power Module.
Call Carrier Service.
ALM-436
VFD Fault -
Inverter Power
Fault
Manual
Unit shuts down.
Alarm relay turns on.
Check VFD Status
Malfunction within VFD Power Module.
Call Carrier Service.
ALM-437
VFD Fault -
Rectifier
Overcurrent
Manual
Unit shuts down.
Alarm relay turns on.
Check VFD Status
Check for high water temperatures or changes in water flow rates.
ALM-438
VFD Fault -
Inverter
Overcurrent
Manual
Unit shuts down.
Alarm relay turns on.
Check VFD Status
Check for high entering water temperature or low condenser water flow.
Check current settings in CFGUMVFD screen.
ALM-439
VFD Fault -
Condenser High
Pressure
Manual
Unit shuts down.
Alarm relay turns on.
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
VFD Fault -
Motor Amps Not
Sensed
Manual
Unit shuts down.
Alarm relay turns on.
Check main circuit breaker for trip. Increase Current % Imbalance in
CFGUMVFD screen.
ALM-441
VFD Fault -
Motor
Acceleration
Fault
Manual
Unit shuts down.
Alarm relay turns on.
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
VFD Fault - Stop
Fault
Manual
Unit shuts down.
Alarm relay turns on.
Check Inverter Power Unit
VFD Circuit Board malfunction.
Call Carrier Service.
ALM-443
VFD Fault -
Rectifier
Overtemp
Manual
Unit shuts down.
Alarm relay turns on.
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
VFD Fault -
Inverter
Overtemp
Manual
Unit shuts down.
Alarm relay turns on.
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-445
VFD Fault -
Motor Current
Imbalance
Manual
Unit shuts down.
Alarm relay turns on. Check Motor Current Imbalance% in CFGUMVFD screen.
Table 16 — PIC6 Alarm Codes* (cont)
ALARM CODE
DESCRIPTION
OF ALARM TEXT
RESET TYPE
ACTION TAKEN BY
THE CONTROL
POSSIBLE CAUSE
Содержание AquaEdge 19DV series
Страница 6: ...6 Fig 3 IOB2 and IOB3 AVAILABLE FOR OLDER SOFTWARE...
Страница 7: ...7 Fig 4 IOB 4...
Страница 8: ...8 Fig 5 19DV Control Panel Abbreviations...
Страница 9: ...9 Fig 6 19DV Control Wiring...