Table 5 — ICVC Alarm Codes
CHILLER PROTECTIVE LIMIT FAULTS
ICVC FAULT | PRIMARY | SECONDARY | PRIMARY CAUSE | ADDITIONAL CAUSE/REMEDY | |
STATE | MESSAGE | MESSAGE | |||
|
| ||||
200 | PROTECTIVE LIMIT | RECTIFIER POWER | 200→Rectifier Power Fault: | Malfunction within VFD Power Module. | |
|
| FAULT | Check VFD Status. | Call Carrier Service. | |
201 | PROTECTIVE LIMIT | INVERTER POWER FAULT | 201→Inverter Power Fault: | Malfunction within VFD Power Module. | |
|
|
| Check VFD Status. | Call Carrier Service. | |
202 | PROTECTIVE LIMIT | MOTOR AMPS NOT | 202→Motor Amps Not | Check main circuit breaker for trip. Increase | |
|
| SENSED | Sensed — Average Load | Current % Imbalance in VFD_CONF screen. | |
|
|
| Current [VALUE]. |
| |
203 | FAILURE TO START | MOTOR ACCELERATION | 203→Motor Acceleration Fault | Check that inlet guide vanes are fully closed at | |
|
| FAULT | — Average Load Current | ||
|
|
| [VALUE]. | Check Motor Rated Load Amps in VFD_CONF | |
|
|
|
| screen. Reduce unit pressure if possible. | |
204 | FAILURE TO STOP | VFD SHUTDOWN FAULT | 204→VFD Shutdown Fault: | VFD Circuit Board malfunction. | |
|
|
| Check Inverter Power Unit. | Call Carrier Service. | |
205 | PROTECTIVE LIMIT | HIGH DC BUS VOLTAGE | 205→High DC Bus Voltage: | Verify phase to phase and phase to ground line | |
|
|
| [VALUE] exceeded limit of | voltage. Monitor AC line for high transient volt- | |
|
|
| [LIMIT]*. | age conditions. VFD Circuit Board malfunction. | |
|
|
|
| Call Carrier Service. | |
206 | PROTECTIVE LIMIT | VFD FAULT | 206→VFD Fault Code: | See VFD Fault Code description and corrective | |
|
|
| [VALUE]; Check VFD Fault | action. | |
|
|
| Code List. |
| |
207 | PROTECTIVE LIMIT | HIGH CONDENSER | 207→High Cond Pressure | Check Compressor Discharge High Pressure | |
|
| PRESSURE | trip. [VALUE] exceeded Switch | switch wiring and accuracy. | |
|
|
| Trippoint. | 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 | 208→Percent Load Current | Check Motor Rated Load Amps in VFD_CONF | |
|
| AMPS | [VALUE] exceeded limit of | screen. Percent Load Current > 110%. | |
|
|
| [LIMIT]*. | Check Motor Rated Load Amps setting. | |
209 | PROTECTIVE LIMIT | LINE CURRENT | 209→Line Current Imbal- | Check phase to phase and phase to ground | |
|
| IMBALANCE | ance: Check VFD Fault His- | power distribution bus voltage. | |
|
|
| tory for Values. | Check Line Current % Imbalance in VFD_CONF | |
|
|
|
| screen. Consult power company. | |
210 | PROTECTIVE LIMIT | LINE VOLTAGE DROPOUT | 210→Single Cycle Line Volt- | Temporary loss of voltage. Disable Single Cycle | |
|
|
| age Dropout. | Dropout in VFD_CONF screen. | |
211 | PROTECTIVE LIMIT | HIGH LINE VOLTAGE | 211→High Percent Line Volt- | Check phase to phase and phase to ground dis- | |
|
|
| age [VALUE]. | tribution bus voltage. Consult power company. | |
212 | PROTECTIVE LIMIT | LOW LINE VOLTAGE | 212→Low Percent Line Volt- | Check phase to phase and phase to ground dis- | |
|
|
| age [VALUE]. | tribution bus voltage. Consult power company. | |
213 | PROTECTIVE LIMIT | VFD MODULE RESET | 213→VFD Module | Temporary loss of VFD control voltage. Check | |
|
|
| Reset When Running. | VFD control power breaker, transformer and | |
|
|
|
| fuses. | |
214 | PROTECTIVE LIMIT | POWER LOSS | 214→Control Power Loss | Check phase to phase and phase to ground dis- | |
|
|
| When Running. | tribution bus voltage. | |
|
|
|
| Check VFD fuses. | |
|
|
|
| Check 24 vac power supply to ICVC. | |
|
|
|
| Consult power company. | |
215 | PROTECTIVE LIMIT | LOW DC BUS VOLTAGE | 215→Low DC Bus Voltage: | Verify | |
|
|
| [VALUE] exceeded limit of | voltage. VFD Circuit Board malfunction. | |
|
|
| [LIMIT]*. | Call Carrier Service. | |
216 | PROTECTIVE LIMIT | LINE VOLTAGE | 216→Line Voltage Imbal- | Check | |
|
| IMBALANCE | ance. Check VFD Fault His- | distribution bus voltage. Increase Line Voltage | |
|
|
| tory for Values. | % Imbalance in VFD_CONF screen. | |
217 | PROTECTIVE LIMIT | MOTOR OVERLOAD TRIP | 217→Motor Overload Trip; | Any phase current > 106% Rated Load Amps. | |
|
|
| Check VFD configurations. | 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 | 218→VFD Rectifier Temp | Check that VFD refrigerant isolation valves are | |
|
| OVERTEMP | Exceeded: Check Cooling and | open. | |
|
|
| VFD Config. | Check VFD refrigerant cooling solenoid and | |
|
|
|
| refrigerant strainer. | |
|
|
|
| Check for proper VFD cooling fan operation and | |
|
|
|
| blockage. | |
219 | PROTECTIVE LIMIT | VFD INVERTER | 219→VFD Inverter Temp | Check that VFD refrigerant isolation valves are | |
|
| OVERTEMP | Exceeded: Check Cooling and | open. | |
|
|
| VFD Config. | Check VFD refrigerant cooling solenoid and | |
|
|
|
| refrigerant strainer. | |
|
|
|
| Check for proper VFD cooling fan operation and | |
|
|
|
| blockage. |
*[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
15