84
Table 9 — CVC Primary and Secondary Messages and
Custom Alarm/Alert Messages with Troubleshooting Guides (cont)
I. CHILLER PROTECT LIMIT FAULTS (cont)
*[LIMIT] is shown on the CVC 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.
J. CHILLER ALERTS
STATE
PRIMARY
MESSAGE
SECONDARY
MESSAGE
ALARM MESSAGE
PRIMARY CAUSE
ADDITIONAL CAUSE/REMEDY
246
PROTECTIVE
LIMIT
DIRTY OIL FILTER
246->Oil Filter DELTA P
[VALUE] exceeded limit of
[LIMIT]. Check oil system.
247
PROTECTIVE
LIMIT
MOTOR ROTATION
INCORRECT
247->Check motor wiring for
phase reversal.
248
PROTECTIVE
LIMIT
SPARE TEMPERATURE
#1
248->Spare Temperature #1
[VALUE] exceeded limit of
[LIMIT]*.
249
PROTECTIVE
LIMIT
SPARE TEMPERATURE
#2
249->Spare Temperature #2
[VALUE] exceeded limit of
[LIMIT]*.
250
PROTECTIVE
LIMIT
REFRIGERANT LEAK
SENSOR
250->Refrigerant Leak Sensor
[VALUE] exceeded Limit of
[LIMIT].
251
PROTECTIVE
LIMIT
ISM CONFIG
CONFLICT
251->ISM Config Conflict (ISM
Uploaded); Verify to Reset
Alarm
252
PROTECTIVE
LIMIT
ISM CONFIG
CONFLICT
252->ISM Config Conflict (ISM
Downloading); Verify to Reset
Alarm
253
FAILURE TO
START
CHECK REFRIGERANT
TYPE
253->Startup Terminated.
Check Refrigerant Type.
STATE
PRIMARY
MESSAGE
SECONDARY
MESSAGE
ALARM MESSAGE
PRIMARY CAUSE
ADDITIONAL CAUSE/REMEDY
140
SENSOR ALERT
LEAVING COND
WATER TEMP
140->Sensor Fault:
Check Leaving Cond
Water Sensor
Check sensor resistance or voltage drop.
Check for proper wiring.
141
SENSOR ALERT
ENTERING COND
WATER TEMP
141->Sensor Fault:
Check Entering Cond
Water Sensor
Check sensor resistance or voltage drop.
Check for proper wiring.
142
LOW OIL PRESSURE
ALERT
CHECK OIL FILTER
142->Low Oil Pressure
Alert. Check Oil Filter.
Check for partially or closed shut-off valves.
Check oil filter.
Check oil level.
Check transducer wiring and accuracy.
143
AUTORESTART
PENDING
LINE PHASE
LOSS
143->Line Phase Loss
Power loss has been detected in any phase.
Chiller automatically restarting.
144
AUTORESTART
PENDING
LINE VOLTAGE
DROP OUT
144->Single Cycle Line
Voltage Dropout
A drop in line voltage has been detected within
2 voltage cycles. Chiller automatically restarting
if restart is enabled.
145
AUTORESTART
PENDING
HIGH LINE
VOLTAGE
145>Line Overvoltage —
Average Line Volt
[VALUE]
Check line power.
146
AUTORESTART
PENDING
LOW LINE
VOLTAGE
146->Line Undervoltage
— Average Line Volt
[VALUE]
Check line power.
147
AUTORESTART
PENDING
STARTER MODULE
RESET
147->Starter Module
Power-On Reset When
Running
ISM has detected a hardware fault and has
reset. Chiller automatically restarting.
148
AUTORESTART
PENDING
POWER LOSS
148->Control Power-Loss
When Running
Check control power.
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 condenser flow and
temperature.
Check for high lift or low load.
Check for proper slide valve operation.
Check for fouled tubes or noncondensables in
the refrigerant system.