Carrier 19XR,XRV Hermetic Centrifugal Liquid Chillers - Manual (Page 80)

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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.