Start-Up, Operation, and Maintenance Instructions

J. CHILLER ALERTS (cont)
Table 11 — CVC/ICVC Primary and Secondary Messages and
Custom Alarm/Alert Messages with Troubleshooting Guides (cont)
STATE
PRIMARY
MESSAGE
SECONDARY
MESSAGE
ALARM MESSAGE
PRIMARY CAUSE
ADDITIONAL
CAUSE/REMEDY
149 SENSOR ALERT HIGH DISCHARGE 149->Comp Discharge Temp Check sensor resistance or voltage drop.
TEMP
[VALUE] exceeded limit of Check for proper wiring.
[LIMIT]*.
Check for proper condenser flow and
temperature.
Check for high lift or low load.
Check for proper inlet guide vane and diffuser
actuator operation (Size 5 compressor Only).
Check for fouled tubes or noncondensables in
the refrigerant system.
150 SENSOR ALERT HIGH BEARING
TEMPERATURE
150->Comp Thrust Bearing
Temp [VALUE] exceeded limit
Check sensor resistance or voltage drop.
Check for proper wiring.
of [LIMIT]*.
Check for partially closed service valves.
Check oil cooler TXV.
Check oil filter.
Check oil level.
151 CONDENSER
PRESSURE ALERT
PUMP RELAY
ENERGIZED
151->High Condenser
Pressure [VALUE]: Pump
Check sensor wiring and accuracy.
Check condenser flow and fluid
Energized to Reduce temperature.
Pressure.
Check for fouled tubes. This alarm is not
caused by the High Pressure Switch.
152 RECYCLE
EXCESSIVE RECYCLE 152->Excessive recycle starts. Chiller load is too low to keep compressor on
ALERT
STARTS
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:
no message;
153->Lead/Lag Disabled: Illegal chiller address configuration in Lead/
ALERT only
ALERT only
Duplicate Chiller Address; Lag screen. Both chillers require a different
Check Configuration
address.
154 POTENTIAL
COND PRESS/TEMP 154->Condenser freeze up The condenser pressure transducer is read-
FREEZE-UP
TOO LOW
prevention
ing 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
155->Sensor Fault/Option
Disabled:
Remote Reset Sensor
Check sensor resistance or voltage drop.
Check for proper wiring.
156 OPTION SENSOR
FAULT
AUTO CHILLED
WATER RESET
156->Sensor Fault/Option
Disabled:
Auto Chilled Water Reset
Check sensor resistance or voltage drop.
Check for proper wiring.
157 OPTION SENSOR
FAULT
AUTO DEMAND
LIMIT INPUT
157->Sensor Fault/Option
Disabled:
Auto Demand Limit Input
Check sensor resistance or voltage drop.
Check for proper wiring.
158 SENSOR ALERT SPARE TEMPERATURE
#1
158->Spare Temperature #1
[VALUE] exceeded limit of
[LIMIT].*
Check sensor resistance or voltage drop.
Check for proper wiring.
159 SENSOR ALERT SPARE TEMPERATURE
#2
159->Spare Temperature #2
[VALUE] exceeded limit of
[LIMIT].*
Check sensor resistance or voltage drop.
Check for proper wiring.
160 DIFFUSER
DIFFUSER
160->Diffuser Position Alert; Check diffuser configuration in SETUP2
ALERT
POSITION
Check Diffuser Configuration. screen.
*[LIMIT] is shown on the CVC/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.
84