59
Table 10 - Alarm and alert messages (continued)
G. NORMAL RUN WITH OVERRIDES
ICVC
FAULT
STATE
PRIMARY
MESSAGE
SECONDARY
MESSAGE
PRIMARY CAUSE
ADDITIONAL CAUSE/REMEDY
120
RUN CAPACITY
LIMITED
HIGH CONDENSER
PRESSURE
120->Condenser Pressure [VALUE]
exceeded limit of [LIMIT]*.
Check condenser water pump operation.
Check for high condenser water temperatures or low flow rate. Verify
that isolation valves are open.
Check Cond Press Override setting in SETUP1.
121
RUN CAPACITY
LIMITED
HIGH MOTOR
TEMPERATURE
121->Comp Motor Winding Temp
[VALUE] exceeded limit of [LIMIT]*.
Check for closed valves or restriction in motor cooling lines.
Check for closed refrigerant isolation valves.
Check Comp Motor Temp Override setting in SETUP1.
122
RUN CAPACITY
LIMITED
LOW EVAP REFRIG
TEMP
122->Evaporator Refrig Temp
[VALUE] exceeded limit of [LIMIT]*.
Check refrigerant charge.
Check that optional cooler liquid line isolation valve is fully open.
Check for excessive condenser flow or low chilled water flow.
Check for low entering cooler temperature.
Check that condenser inlet and outlet water
nozzles are piped correctly.
Check for waterbox division plate gasket bypass.
123
RUN CAPACITY
LIMITED
HIGH COMPRESSOR
LIFT
123->Surge Prevention Override: Lift
Too High For Compressor
Check for high condenser water temperature or low suction temperature.
Check for high Evaporator or Condenser approaches.
Check surge prevention parameters in OPTIONS screen.
124
RUN CAPACITY
LIMITED
MANUAL GUIDE VANE
TARGET
124->Run Capacity Limited: Manual
Guide Vane Target
Target Guide Vane Position has been forced in the COMPRESS screen.
Select and RELEASE force to return to normal (automatic) operation.
125
RUN CAPACITY
LIMITED
LOW DISCHARGE
SUPERHEAT
No alert message.
Check for oil loss or excess refrigerant charge. Verify that the valves in
the oil reclaim lines are open.
126
RUN CAPACITY
LIMITED
HIGH RECTIFIER TEMP 126->Rectifier Temperature [VALUE]
exceeded limit of [LIMIT]*
Check Rectifier Temp Override in SETUP1 screen.
Check that VFD refrigerant isolation valves are open.
Check VFD refrigerant cooling solenoid.
Check for proper VFD cooling fan operation and blockage.
127
RUN CAPACITY
LIMITED
MANUAL SPEED
CONTROL
No alert message.
Chiller is not in automatic temperature control.
128
RUN CAPACITY
LIMITED
HIGH INVERTER TEMP 128->Inverter Temperature [VALUE]
exceeded limit of [LIMIT]*
Check Inverter Temp Override in SETUP1 screen.
Check that VFD refrigerant isolation valves are open.
Check VFD refrigerant cooling solenoid.
Check for proper VFD cooling fan operation and blockage.
* [LIMIT] is shown on the ICVC as the temperature, pressure, voltage, etc., setpoint 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 is tripped.
H. OUT-OF-RANGE SENSOR
ICVC
FAULT
STATE
PRIMARY MESSAGE SECONDARY MESSAGE PRIMARY CAUSE
ADDITIONAL CAUSE/REMEDY
260
SENSOR FAULT
LEAVING CHILLED
WATER
260->Sensor Fault: Check Leaving Chilled
Water Sensor
Check sensor resistance or voltage drop.
Check for proper wiring.
Check for disconnected or shorted wiring.
261
SENSOR FAULT
ENTERING CHILLED
WATER
261->Sensor Fault: Check Entering Water
Sensor
Check sensor resistance or voltage drop.
Check for proper wiring.
Check for disconnected or shorted wiring.
262
SENSOR FAULT
CONDENSER PRESSURE 262->Sensor Fault: Check Condenser
Pressure Sensor
Check sensor wiring.
Check for disconnected or shorted wiring.
Check for condensation in transducer connector.
263
SENSOR FAULT
EVAPORATOR
PRESSURE
263->Sensor Fault: Check Evaporator
Pressure Sensor
Check sensor wiring.
Check for disconnected or shorted wiring.
Check for condensation in transducer connector.
264
SENSOR FAULT
COMPRESSOR BEARING
TEMP
264->Sensor Fault: Check Comp Thrust
Brg Temp Sensor
Check sensor resistance or voltage drop.
Check for proper wiring.
Check for disconnected or shorted wiring.
265
SENSOR FAULT
COMPRESSOR MOTOR
TEMP
265->Sensor Fault: Check Comp Motor
Winding Temp Sensor
Check sensor resistance or voltage drop.
Check for proper wiring.
Check for disconnected or shorted wiring.
266
SENSOR FAULT
COMPRESSOR
DISCHARGE TEMP
266->Sensor Fault: Check Comp
Discharge Temp Sensor
Check sensor resistance or voltage drop.
Check for proper wiring.
Check for disconnected or shorted wiring.
267
SENSOR FAULT
OIL SUMP TEMP
267->Sensor Fault: Check Oil Sump Temp
Sensor.
Check sensor resistance or voltage drop.
Check for proper wiring.
Check for disconnected or shorted wiring.
268
SENSOR FAULT
COMP OIL PRESS DIFF
268->Sensor Fault: Check Oil Pump Delta
P Sensor
Check sensor wiring.
Check for disconnected or shorted wiring.
Check for condensation in transducer connector.
269
SENSOR FAULT
CHILLED WATER FLOW
269->Sensor Fault: Check Chilled Water
Delta P Sensor
Check sensor wiring and accuracy.
Check for disconnected or shorted wiring.
If pressure transducers are not installed, check for presence
of resistors and jumpers on lower CCM terminal block J3.
270
SENSOR FAULT
COND WATER FLOW
270->Sensor Fault: Check Cond Water
Delta P Sensor.
Check sensor wiring and accuracy.
Check for disconnected or shorted wiring.
If pressure transducers are not installed, check for presence
of resistors and jumpers on lower CCM terminal block J3.
271
SENSOR FAULT
EVAP SATURATION
TEMP
271->Sensor Fault: Check Evap
Saturation Temp Sensor
Check sensor resistance or voltage drop.
Check for proper wiring.
Check for disconnected or shorted wiring.
