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Table 8 — CVC Primary and Secondary Messages and
Custom Alarm/Alert Messages with Troubleshooting Guides (cont)
F. NORMAL RUN
PRIMARY MESSAGE
SECONDARY MESSAGE
CAUSE/REMEDY
RUNNING — RESET ACTIVE
4-20 mA SIGNAL
Auto chilled water reset active based on external input.
RUNNING — RESET ACTIVE
REMOTE TEMP SENSOR
Auto chilled water reset active based on external input.
RUNNING — RESET ACTIVE
CHW TEMP DIFFERENCE
Auto chilled water reset active based on cooler
D
T.
RUNNING — TEMP CONTROL
LEAVING CHILLED WATER
Default method of temperature control.
RUNNING — TEMP CONTROL
ENTERING CHILLED WATER
Entering Chilled Water (ECW) control enabled in TEMP_CTL screen.
RUNNING — TEMP CONTROL
TEMPERATURE RAMP LOADING Ramp Loading in effect. Use RAMP_DEM screen to modify.
RUNNING — DEMAND LIMITED BY DEMAND RAMP LOADING
Ramp Loading in effect. Use RAMP_DEM screen to modify.
RUNNING — DEMAND LIMITED BY LOCAL DEMAND SETPOINT
Demand limit set point is less than actual demand.
RUNNING — DEMAND LIMITED BY 4-20 mA SIGNAL
Demand limit is active based on external auto demand limit option.
RUNNING — DEMAND LIMITED BY CCN SIGNAL
Demand limit is active based on control limit signal from CCN.
RUNNING — DEMAND LIMITED BY LOADSHED/REDLINE
Demand limit is active based on LOADSHED screen set-up.
RUNNING — TEMP CONTROL
HOT GAS BYPASS
Hot gas bypass option is energized. See surge prevention in the control
section.
RUNNING — DEMAND LIMITED BY LOCAL SIGNAL
Active demand limit manually overridden on MAINSTAT table.
RUNNING — TEMP CONTROL
ICE BUILD MODE
Chiller is running under Ice Build temperature control.
G. NORMAL RUN WITH OVERRIDES
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.
*[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 has recorded at the time of the fault condition.
H. OUT-OF-RANGE SENSOR ALARMS
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.
73
Summary of Contents for HERMETIC CENTRIFUGAL LIQUID CHILLERS 19XR
Page 13: ...Fig 10 Control Panel Fig 11 Power Panel 13 ...
Page 47: ...Fig 25 19XR Leak Test Procedures 47 ...
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