Carrier 19XR - Page 73

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.
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