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Table 5 — ICVC Alarm Codes
CHILLER PROTECTIVE LIMIT FAULTS
*[LIMIT] is shown on the ICVC as the temperature, pressure, voltage, etc., set point predefined or selected by the operator as an override, alert, or
alarm condition. [VALUE] is the actual pressure, temperature, voltage, etc., at which the control tripped.
NOTE: ICVC Alarms 212-226 are declared as a result of VFD Faults.
ICVC FAULT
STATE
PRIMARY
MESSAGE
SECONDARY
MESSAGE
PRIMARY CAUSE ADDITIONAL CAUSE/REMEDY
200 PROTECTIVE LIMIT RECTIFIER POWER
FAULT
200Rectifier Power Fault:
Check VFD Status.
Malfunction within VFD Power Module.
Call Carrier Service.
201 PROTECTIVE LIMIT INVERTER POWER FAULT 201Inverter Power Fault:
Check VFD Status.
Malfunction within VFD Power Module.
Call Carrier Service.
202 PROTECTIVE LIMIT MOTOR AMPS NOT
SENSED
202Motor Amps Not
Sensed — Average Load
Current [VALUE].
Check main circuit breaker for trip. Increase
Current % Imbalance in VFD_CONF screen.
203 FAILURE TO START MOTOR ACCELERATION
FAULT
203Motor Acceleration Fault
— Average Load Current
[VALUE].
Check that inlet guide vanes are fully closed at
start-up.
Check Motor Rated Load Amps in VFD_CONF
screen. Reduce unit pressure if possible.
204 FAILURE TO STOP VFD SHUTDOWN FAULT 204VFD Shutdown Fault:
Check Inverter Power Unit.
VFD Circuit Board malfunction.
Call Carrier Service.
205 PROTECTIVE LIMIT HIGH DC BUS VOLTAGE 205High DC Bus Voltage:
[VALUE] exceeded limit of
[LIMIT]*.
Verify phase to phase and phase to ground line
voltage. Monitor AC line for high transient volt-
age conditions. VFD Circuit Board malfunction.
Call Carrier Service.
206 PROTECTIVE LIMIT VFD FAULT 206VFD Fault Code:
[VALUE]; Check VFD Fault
Code List.
See VFD Fault Code description and corrective
action.
207 PROTECTIVE LIMIT HIGH CONDENSER
PRESSURE
207High Cond Pressure
trip. [VALUE] exceeded Switch
Trippoint.
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.
208 PROTECTIVE LIMIT EXCESSIVE MOTOR
AMPS
208Percent Load Current
[VALUE] exceeded limit of
[LIMIT]*.
Check Motor Rated Load Amps in VFD_CONF
screen. Percent Load Current > 110
%.
Check Motor Rated Load Amps setting.
209 PROTECTIVE LIMIT LINE CURRENT
IMBALANCE
209Line Current Imbal-
ance: Check VFD Fault His-
tory for Values.
Check phase to phase and phase to ground
power distribution bus voltage.
Check Line Current % Imbalance in VFD_CONF
screen. Consult power company.
210 PROTECTIVE LIMIT LINE VOLTAGE DROPOUT 210Single Cycle Line Volt-
age Dropout.
Temporary loss of voltage. Disable Single Cycle
Dropout in VFD_CONF screen.
211 PROTECTIVE LIMIT HIGH LINE VOLTAGE 211High Percent Line Volt-
age [VALUE].
Check phase to phase and phase to ground dis-
tribution bus voltage. Consult power company.
212 PROTECTIVE LIMIT LOW LINE VOLTAGE 212Low Percent Line Volt-
age [VALUE].
Check phase to phase and phase to ground dis-
tribution bus voltage. Consult power company.
213 PROTECTIVE LIMIT VFD MODULE RESET 213VFD Module Power-On
Reset When Running.
Temporary loss of VFD control voltage. Check
VFD control power breaker, transformer and
fuses.
214 PROTECTIVE LIMIT POWER LOSS 214Control Power Loss
When Running.
Check phase to phase and phase to ground dis-
tribution bus voltage.
Check VFD fuses.
Check 24 vac power supply to ICVC.
Consult power company.
215 PROTECTIVE LIMIT LOW DC BUS VOLTAGE 215Low DC Bus Voltage:
[VALUE] exceeded limit of
[LIMIT]*.
Verify phase-to-phase and phase-to-ground line
voltage. VFD Circuit Board malfunction.
Call Carrier Service.
216 PROTECTIVE LIMIT LINE VOLTAGE
IMBALANCE
216Line Voltage Imbal-
ance. Check VFD Fault His-
tory for Values.
Check phase-to-phase and phase-to-ground
distribution bus voltage. Increase Line Voltage
% Imbalance in VFD_CONF screen.
217 PROTECTIVE LIMIT MOTOR OVERLOAD TRIP 217Motor Overload Trip;
Check VFD configurations.
Any phase current > 106% Rated Load Amps.
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 VFD_CONF
screen.
218 PROTECTIVE LIMIT VFD RECTIFIER
OVERTEMP
218VFD Rectifier Temp
Exceeded: 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.
219 PROTECTIVE LIMIT VFD INVERTER
OVERTEMP
219VFD Inverter Temp
Exceeded: 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.