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Table 4 — ICVC Alert Codes (cont)
CHILLER ALERTS
*[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.
ICVC FAULT
STATE
PRIMARY
MESSAGE
SECONDARY
MESSAGE
PRIMARY CAUSE ADDITIONAL CAUSE/REMEDY
140 SENSOR ALERT LEAVING COND WATER
TEMP
140Sensor Fault: Check
Leaving Cond Water Sensor.
Check sensor resistance or voltage drop.
Check for proper wiring.
141 SENSOR ALERT ENTERING COND WATER
TEMP
141Sensor Fault: Check
Entering Cond Water Sensor.
Check sensor resistance or voltage drop.
Check for proper wiring.
142 LOW OIL
PRESSURE ALERT
CHECK OIL FILTER 142Low Oil Pressure Alert.
Check Oil Filter.
Check for partially or closed shut-off valves.
Check oil filter.
Check oil pump and power supply.
Check oil level.
Check for foaming oil at start-up.
Check transducer wiring and accuracy.
143 AUTORESTART
PENDING
LINE CURRENT
IMBALANCE
143Line Current Imbal-
ance: Check VFD Fault His-
tory for Values.
Power loss has been detected in any phase.
Chiller automatically restarting.
144 AUTORESTART
PENDING
LINE VOLTAGE
DROP OUT
144Single Cycle Line
Voltage Dropout.
A drop in line voltage has been detected within
2 voltage cycles.
Chiller automatically restarting if Auto Restart is
enabled in OPTIONS screen.
145 AUTORESTART
PENDING
HIGH LINE VOLTAGE 145High Percent Line
Voltage [VALUE].
Check phase to phase and phase to ground line
power.
146 AUTORESTART
PENDING
LOW LINE VOLTAGE 146Low Percent Line
Voltage [VALUE].
Check phase to phase and phase to ground line
power.
147 AUTORESTART
PENDING
VFD MODULE RESET 147->VFD Module Power-On
Reset When Running.
VFD Module has detected a hardware fault due
to electrical noise, power loss or software and
has reset. Chiller automatically restarting.
Check for power loss and sources of electro-
magnetic interference.
148 AUTORESTART
PENDING
POWER LOSS 148Control Power-Loss
When Running.
Check 24 vac control power supply to ICVC.
149 SENSOR ALERT HIGH DISCHARGE TEMP 149
Comp Discharge Temp
[VALUE] Exceeded Limit of
[LIMIT]*.
Check sensor resistance or voltage drop.
Check for proper wiring.
Check for proper inlet guide vane and optional
diffuser actuator operation.
Check for proper condenser flow and
temperature.
Check for high lift or low load.
Check for fouled tubes or noncondensables in
the chiller.
150 SENSOR ALERT HIGH BEARING
TEMPERATURE
150Comp Thrust Brg Temp
[VALUE] exceeded limit of
[LIMIT]*.
Check sensor resistance or voltage drop.
Check for proper wiring.
Check for partially closed service valves.
Check oil cooler TXV.
Check oil level and oil temperature.
151 CONDENSER
PRESSURE ALERT
PUMP RELAY
ENERGIZED
151High Condenser Pres-
sure [VALUE]: Pump Ener-
gized to Reduce Pressure.
Check sensor wiring and accuracy.
Check condenser flow and water temperature.
Check for fouled tubes.
This alarm is not caused by the High Pressure
Switch.
152 RECYCLE ALERT EXCESSIVE RECYCLE
STARTS
152Excessive recycle
starts.
Chiller load is too low to keep compressor on
line and there has been more than 5 starts in
4 hours.
Increase chiller load, adjust hot gas bypass,
increase RECYCLE RESTART DELTA T from
SETUP1 Screen.
153 no message:
ALERT
only
no message; ALERT only 153Lead/Lag Disabled-
Config: Duplicate Chiller
Address.
Illegal chiller address configuration in Lead/Lag
screen. Both chillers require a different address.
154 POTENTIAL
FREEZE-UP
COND PRESS/TEMP
TOO LOW
154Condenser freeze up
prevention.
The condenser pressure transducer is reading a
pressure that could freeze the condenser tubes.
Check for condenser refrigerant leaks.
Check fluid temperature.
Check sensor wiring and accuracy.
Place the chiller in PUMPDOWN mode if the
vessel is evacuated.
155 OPTION SENSOR
FAULT
REMOTE RESET
SENSOR
155Sensor Fault/Option
Disabled: Remote Reset
Sensor.
Check sensor resistance or voltage drop.
Check for proper wiring to CCM connector J4.
156 OPTION SENSOR
FAULT
AUTO CHILLED WATER
RESET
156Sensor Fault/Option
Disabled: Auto Chilled Water
Reset.
Check sensor resistance or voltage drop.
Check for proper wiring to CCM connector J5.
157 OPTION SENSOR
FAULT
AUTO DEMAND LIMIT
INPUT
157Sensor Fault/Option
Disabled: Auto Demand Limit
Input.
Check sensor resistance or voltage drop.
Check for proper wiring to CCM connector J5.
158 SENSOR ALERT SPARE TEMPERATURE
#1
158Spare Temperature 1
[VALUE] exceeded limit of
[LIMIT]*.
Check sensor resistance or voltage drop.
Check for proper wiring to CCM connector J4.
Check Spare Temp #1 Limit in SETUP1 screen.