Table 4 — ICVC Alert Codes (cont)
CHILLER ALERTS (cont)
ICVC FAULT | PRIMARY | SECONDARY | PRIMARY CAUSE | ADDITIONAL CAUSE/REMEDY | |
STATE | MESSAGE | MESSAGE | |||
|
| ||||
159 | SENSOR ALERT | SPARE TEMPERATURE | 159→Spare Temperature 2 | Check sensor resistance or voltage drop. | |
|
| #2 | [VALUE] exceeded limit of | Check for proper wiring to CCM connector J4. | |
|
|
| [LIMIT]*. | Check Spare Temp #2 Limit in SETUP1 screen. | |
161 | LOSS OF | WITH WSM | 161→WSM Cool Source — | Check settings in WSMDEFME screen. | |
| COMMUNICATION |
| Loss of Communication. | Check CCN communications link with WSM | |
|
|
|
| (Water System Manager) Module. | |
|
|
|
| Check Supervisory Part of WSM. | |
162 | SENSOR ALERT | EVAPORATOR | 162→Evaporator Approach | Check that refrigerant charge level is adequate, | |
|
| APPROACH | [VALUE] Exceeded Limit of | waterbox division plate gaskets are sealing, | |
|
|
| [LIMIT]*. | evaporator tubes are not fouled and that oil | |
|
|
|
| reclaim system is working. | |
|
|
|
| Check sensor resistance or voltage drop. | |
|
|
|
| Check for proper wiring. | |
|
|
|
| Check Evap Approach Alert setting in SETUP1 | |
|
|
|
| screen. | |
163 | SENSOR ALERT | CONDENSER APPROACH | 163→Condenser Approach | Check sensors resistance or voltage drop. | |
|
|
| [VALUE] Exceeded Limit of | Check for proper wiring. | |
|
|
| [LIMIT]*. | Check Cond Approach Alert setting in SETUP1 | |
|
|
|
| screen. | |
|
|
|
| Check for noncondensable gas in the | |
|
|
|
| condenser. | |
|
|
|
| Check that the condenser tubes are not fouled. | |
164 | VFD SPEED ALERT | LOW VFD SPEED | 164→Actual VFD Speed | Actual VFD Speed on COMPRESS screen must | |
|
|
| exceeded limit of Target VFD | be at least 90% of Target VFD Speed. | |
|
|
| Speed |
| |
165 | AUTORESTART | LOW DC BUS VOLTAGE | 165→Low DC Bus Voltage: | Verify phase to phase and phase to ground line | |
| PENDING |
| [VALUE] Exceeded Limit of | voltage. | |
|
|
| [LIMIT]*. |
| |
166 | AUTORESTART | HIGH DC BUS VOLTAGE | 166→High DC Bus Voltage: | Verify phase to phase and phase to ground line | |
| PENDING |
| [VALUE] Exceeded Limit of | voltage. Monitor AC line for high transient volt- | |
|
|
| [LIMIT]*. | age conditions. | |
167 | SYSTEM ALERT | HIGH DISCHARGE TEMP | 167→Comp Discharge Temp | Check sensor resistance or voltage drop. | |
|
|
| [VALUE] exceeded limit of | Check for proper wiring. | |
|
|
| [LIMIT]*. | Check for excessive starts. | |
|
|
|
| Check Comp Discharge Alert setting in SETUP1 | |
|
|
|
| screen. | |
168 | SENSOR ALERT | HUMIDITY SENSOR | 168→Sensor Fault: Check | Check humidity sensor wiring on CCM connec- | |
|
| INPUT | Humidity Sensor Input Sensor. | tors J3 and J5. CCM switch | |
|
|
|
| “OFF” position. | |
|
|
|
| Check Humidity Sensor Input in Controls Test. |
*[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.
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