Specifications

83
Table 11 — 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
INVALID DIFFUSER
CONFIG
246->Diffuser Control Invalid
Configuration:
Check SETUP2 Entries.
Check diffuser/guide vane schedule.
247
PROTECTIVE
LIMIT
DIFFUSER POSITION
FAULT
247->Diffuser Position Fault:
Check Guide Vane and Diffuser
Actuators
Check rotating stall transducer wiring and
accuracy.
Check diffuser schedule.
Check for proper operation of diffuser actua-
tor and inlet guide vane actuator.
Check diffuser coupling.
Check inlet guide vane operation.
Check inlet guide vane calibration.
Check diffuser/inlet guide vane schedule.
Check diffuser mechanical set-up for proper
orientation.
If not using variable diffuser, check that the
option has not been enabled.
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]*.
The refrigerant leak detector’s output wired
to J5-5 and J5-6 on the CCM module has
reached the alarm limit.
Check leak detector and for leaks.
251
PROTECTIVE
LIMIT
ISM CONFIG
CONFLICT
251->ISM Config Conflict (ISM
Uploaded); Verify to Reset
Alarm
Confirm valid settings in ISM_CONF screen.
252
PROTECTIVE
LIMIT
ISM CONFIG
CONFLICT
252->ISM Config Conflict (ISM
Downloaded); Verify to Reset
Alarm
Confirm valid settings in ISM_CONF screen.
253
PROTECTIVE
LIMIT
GUIDE VANE
CALIBRATION
253->Guide Vane Fault
[VALUE]. Check Calibration.
Enter Control Test and execute Guide Vane
Calibration. Check guide vane feedback
(terminals J4-9 and J4-10) on the CCM
module.
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 pump and power supply.
Check oil level.
Check for foaming oil at start-up.
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
Autorestart option 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.