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Table 11 — CVC/ICVC Primary and Secondary Messages and
Custom Alarm/Alert Messages with Troubleshooting Guides (cont)
G. NORMAL RUN WITH OVERRIDES
*[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 has recorded at the time of the fault con-
dition.
H. OUT-OF-RANGE SENSOR ALARMS
STATE
PRIMARY
MESSAGE
SECONDARY
MESSAGE
ALARM MESSAGE
PRIMARY CAUSE
ADDITIONAL
CAUSE/REMEDY
120 RUN CAPACITY
LIMITED
HIGH CONDENSER
PRESSURE
120->Condenser Pressure
[VALUE] exceeded limit of [LIMIT]*.
Check for high condenser water temperatures.
Check setting in SETUP1.
121 RUN CAPACITY
LIMITED
HIGH MOTOR
TEMPERATURE
121->Comp Motor Winding Temp
[VALUE] exceeded limit of [LIMIT]*.
Check motor cooling lines.
Check for closed valves.
Check setting in SETUP1.
122 RUN CAPACITY
LIMITED
LOW EVAP
REFRIG TEMP
122->Evaporator Refrig Temp
[VALUE] exceeded limit of [LIMIT]*.
Check refrigerant charge.
Check for low entering cooler temperatures.
123 RUN CAPACITY
LIMITED
HIGH COMPRESSOR
LIFT
123->Surge Prevention Override:
Lift Too High For Compressor.
Check for high condenser water temperatures or
low suction temperature.
124 RUN CAPACITY
LIMITED
MANUAL GUIDE
VANE TARGET
124->Run Capacity Limited:
Manual Guide Vane Target.
Target guide vane point has been forced in
MAINSTAT screen. Release force to continue
normal operation.
125 RUN CAPACITY
LIMITED
LOW DISCHARGE
SUPERHEAT
No messages. Check oil charge.
Check refrigerant charge.
STATE
PRIMARY
MESSAGE
SECONDARY
MESSAGE
ALARM MESSAGE
PRIMARY CAUSE
ADDITIONAL
CAUSE/REMEDY
260 SENSOR
FAULT
LEAVING CHILLED
WATER
260->Sensor Fault:
Leaving Chilled Water
Check sensor resistance or voltage drop.
Check for proper wiring.
261 SENSOR
FAULT
ENTERING CHILLED
WATER
261->Sensor Fault:
Entering Chilled Water
Check sensor resistance or voltage drop.
Check for proper wiring.
262 SENSOR
FAULT
CONDENSER
PRESSURE
262->Sensor Fault:
Condenser Pressure
Check sensor wiring.
263 SENSOR
FAULT
EVAPORATOR
PRESSURE
263->Sensor Fault:
Evaporator Pressure
Check sensor wiring.
264 SENSOR
FAULT
COMPRESSOR
BEARING TEMP
264->Sensor Fault:
Comp Thrust Bearing Temp
Check sensor resistance or voltage drop.
Check for proper wiring.
265 SENSOR
FAULT
COMPRESSOR
MOTOR TEMP
265->Sensor Fault:
Comp Motor Winding Temp
Check sensor resistance or voltage drop.
Check for proper wiring.
266 SENSOR
FAULT
COMP DISCHARGE
TEMP
266->Sensor Fault:
Comp Discharge Temp
Check sensor resistance or voltage drop.
Check for proper wiring.
267 SENSOR
FAULT
OIL SUMP TEMP 267->Sensor Fault:
Oil Sump Temp
Check sensor resistance or voltage drop.
Check for proper wiring.
268 SENSOR
FAULT
COMP OIL
PRESS DIFF
268->Sensor Fault:
Oil Pump Delta P
Check sensor wiring and accuracy.
269 SENSOR
FAULT
CHILLED WATER
FLOW
269->Sensor Fault:
Chilled Water Delta P
Check sensor wiring and accuracy.
270 SENSOR
FAULT
COND WATER
FLOW
270->Sensor Fault:
Cond Water Delta P
Check sensor wiring and accuracy.
271 SENSOR
FAULT
VFD SPEED SENSOR
OUT OF RANGE
271->Sensor Fault:
Check Actual VFD Speed Sensor
Check voltage input on terminals J6-1 and J6-2 on
the ISM module. Check wiring.
273 SENSOR
FAULT
VFD SPEED OUT OF
RANGE
273->Sensor Fault:
Check Actual VFD Speed Sensor
Check VFD feedback 0-5 vac. Calibrate VFD
speed reference signal.