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Table 11 — CVC/ICVC Primary and Secondary Messages and
Custom Alarm/Alert Messages with Troubleshooting Guides (cont)
D. PRE-START ALERTS: These alerts only delay start-up. When alert is corrected, the start-up will continue. No reset is necessary.
*[LIMIT] is shown on the CVC/ICVC as temperature, pressure, voltage, etc., predefined or selected by the operator as an override or an alert.
[VALUE] is the actual pressure, temperature, voltage, etc., at which the control tripped.
E. START-UP IN PROGRESS
F. NORMAL RUN
STATE
PRIMARY
MESSAGE
SECONDARY
MESSAGE
ALARM MESSAGE
PRIMARY CAUSE
ADDITIONAL CAUSE/REMEDY
100 PRESTART
ALERT
STARTS LIMIT
EXCEEDED
100->Excessive compressor
starts (8 in 12 hours)
Depress the RESET softkey if additional start is
required. Reassess start-up requirements.
101 PRESTART
ALERT
HIGH BEARING
TEMPERATURE
101->Comp Thrust Bearing
Temp [VALUE] exceeded
limit of [LIMIT]*.
Check oil heater for proper operation.
Check for low oil level, partially closed coil supply
valves, clogged oil filters, etc.
Check the sensor wiring and accuracy.
Check configurable range in SETUP1 screen.
102 PRESTART
ALERT
HIGH MOTOR
TEMPERATURE
102->Comp Motor Winding Temp
[VALUE] exceeded limit
of [LIMIT]*.
Check motor sensors for wiring and accuracy.
Check motor cooling line for proper operation, or
restrictions.
Check for excessive starts within a short time span.
Check configurable range in SETUP1 screen.
103 PRESTART
ALERT
HIGH DISCHARGE
TEMP
103->Comp Discharge Temp
[VALUE] exceeded limit of
[LIMIT]*.
Allow discharge sensor to cool.
Check for sensor wiring and accuracy.
Check for excessive starts.
Check configurable range in SETUP1 screen.
104 PRESTART
ALERT
LOW REFRIGERANT
TEMP
104->Evaporator Refrig Temp
[VALUE] exceeded limit of
[LIMIT]*.
Check transducer wiring and accuracy.
Check for low chilled fluid supply temperatures.
Check refrigerant charge.
105 PRESTART
ALERT
LOW OIL
TEMPERATURE
105->Oil Sump Temp [VALUE]
exceeded limit of [LIMIT]*.
Check oil heater contactor/relay and power.
Check oil level and oil pump operation.
106 PRESTART
ALERT
HIGH CONDENSER
PRESSURE
106->Condenser Pressure
[VALUE] exceeded limit of
[LIMIT]*.
Check transducer wiring and accuracy.
Check for high condenser water temperatures.
107 PRESTART
ALERT
LOW LINE
VOLTAGE
107->Average Line Voltage
[VALUE] exceeded limit of
[LIMIT]*.
Check voltage supply. Check voltage transformers.
Consult power utility if voltage is low.
108 PRESTART
ALERT
HIGH LINE
VOLTAGE
108->Average Line Voltage
[VALUE] exceeded limit of
[LIMIT]*.
Check voltage supply.
Check power transformers.
Consult power utility if voltage is high.
109 PRESTART
ALERT
GUIDE VANE
CALIBRATION
109->Actual Guide Vane
Pos Calibration Required
Before Start-Up
Calibrate guide vane actuator in Control Test.
PRIMARY MESSAGE SECONDARY MESSAGE CAUSE/REMEDY
STARTUP IN PROGRESS OCCUPIED MODE Chiller is starting. Time schedule is occupied.
STARTUP IN PROGRESS REMOTE CONTACT CLOSED Chiller is starting. Remote contacts are enabled and closed.
STARTUP IN PROGRESS START COMMAND IN EFFECT Chiller is starting. Chiller START/STOP in MAINSTAT manually forced to
start.
AUTORESTART IN PROGRESS OCCUPIED MODE Chiller is starting after power failure. Time schedule is occupied.
AUTORESTART IN PROGRESS REMOTE CONTACT CLOSED Chiller is starting after power failure. Remote contacts are enabled and
closed.
AUTORESTART IN PROGRESS START COMMAND IN EFFECT Chiller is starting after power failure. Chiller START/STOP on MAINSTAT
manually forced to start.
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 ∆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 stall 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.