Table 8 — CVC Primary and Secondary Messages and
Custom Alarm/Alert Messages with Troubleshooting Guides (cont)
C. IN RECYCLE SHUTDOWN
PRIMARY MESSAGE SECONDARY MESSAGE PROBABLE CAUSE/REMEDY
RECYCLE RESTART PENDING OCCUPIED MODE Unit in recycle mode, chilled water temperature is not sufficiently above
set point to start.
RECYCLE RESTART PENDING REMOTE CONTACT CLOSED Unit in recycle mode, chilled water temperature is not sufficiently above
set point to start.
RECYCLE RESTART PENDING START COMMAND IN EFFECT Chiller START/STOP on MAINSTAT manually forced to start, chilled
water temperature is not sufficiently above set point to start.
RECYCLE RESTART PENDING ICE BUILD MODE Chiller in ICE BUILD mode. Chilled fluid temperature is satisfied for ICE
BUILD conditions.
D. PRE-STARTALERTS: These alerts only delay start-up. When alert is corrected, the start-up will continue. No reset is necessary.
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.
*[LIMIT] is shown on the CVC 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
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.
72
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