Specifications

102
Table 17 — 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 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. "Exceeded Limit" in Alarm or Alert messages may mean the value is
above or below a threshold.
FAULT
STATE
PRIMARY
MESSAGE
SECONDARY
MESSAGE
PRIMARY CAUSE ADDITIONAL CAUSE/REMEDY
100
PRESTART
ALERT
STARTS LIMIT
EXCEEDED
100->Excessive compressor starts (8
in 12 hours)
Check STARTS IN 12 HOURS in MAINSTAT screen.
Depress the RESET softkey if additional start is required.
Reassess start-up requirements. (Recycle restarts and auto
restarts after power failure are not counted.)
101
PRESTART
ALERT
HIGH BEARING TEM-
PERATURE
"101->Comp Thrust Bearing Temp
[VALUE] exceeded limit of [LIMIT]*.
Check COMP THRUST BRG TEMP in COMPRESS screen.
Check oil heater and oil cooler for proper operation.
Check for low oil level, partially closed oil supply valves,
clogged oil filters.
Check the Thrust Bearing Temperature sensor wiring and
accuracy to CCM J4-19 and J4-20.
Check Resistance of thermistor vs. temperature.
Check COMP THRUST BRG ALERT setting in SETUP1
screen.
Check Resistance of thermistor vs. temperature.
102
PRESTART
ALERT
HIGH MOTOR TEMPER-
ATURE
102->Comp Motor Winding Temp
[VALUE] exceeded limit of [LIMIT]*.
Check COMP MOTOR WINDING TEMP in COMPRESS
screen.
Check motor temperature sensor for wiring and accuracy to
CCM J4-23 and J4-24.
Check Resistance of thermistor vs. temperature
Check motor cooling line and isolation valves for proper oper-
ation, or restrictions, check refrigerant filter/drier.
Check for excessive starts within a short time span.
Check COMP MOTOR TEMP OVERRIDE setting in SETUP1
screen.
103
PRESTART
ALERT
HIGH DISCHARGE
TEMP
103->Comp Discharge Temp
[VALUE] exceeded limit of [LIMIT]*.
Check COMP DISCHARGE TEMP in COMPRESS screen.
Allow compressor discharge temperature sensor to cool.
Check compressor discharge temperature sensor wiring and
accuracy to CCM J4-17 and J4-18.
Check Resistance of thermistor vs. temperature Check for
excessive starts.
Check COMP DISCHARGE ALERT setting in SETUP1
screen.
104
PRESTART
ALERT
LOW REFRIGERANT
TEMP
104->Evaporator Refrig Temp
[VALUE] exceeded limit of [LIMIT]*.
Check EVAPORATOR PRESSURE, CALC EVAP SAT TEMP,
and EVAP REFRIG LIQUID TEMP in HEAT_EX screen.
Check Evaporator Pressure transducer and Evaporator
Refrigerant Liquid Temperature sensor wiring and accuracy.
Check Resistance of thermistor vs. temperature.
Check for low chilled water supply temperatures.
Check refrigerant charge. Check REFRIG OVERRIDE DELTA
T and EVAP REFRIG TRIPPOINT in SETUP1 screen.
105
PRESTART
ALERT
LOW OIL TEMPERA-
TURE
105->Oil Sump Temp [VALUE]
exceeded limit of [LIMIT]*.
Check OIL SUMP TEMP in ICVC default screen. Check 1C oil
heater contactor/relay and power.
Check Oil Sump Temperature Sensor wiring and accuracy.
Check Resistance of thermistor vs. temperature. Check oil
level and oil pump operation.
Check EVAPORATOR PRESSURE, CALC EVAP SAT TEMP,
and EVAP REFRIG LIQUID TEMP in HEAT_EX screen.
106
PRESTART
ALERT
HIGH CONDENSER
PRESSURE
106->Condenser Pressure [VALUE]
exceeded limit of [LIMIT]*.
Check CONDENSER PRESSURE in HEAT_EX screen.
Check Condenser Pressure transducer wiring and accuracy.
Check for high condenser water temperatures. Check COND
PRESS OVERRIDE in SETUP1 screen.
107
PRESTART
ALERT
LOW LINE VOLTAGE 107Average Line Voltage [VALUE]
exceeded limit of [LIMIT]*.
Check ACTUAL LINE VOLTAGE in POWER screen. Check
UNDERVOLTAGE THRESHOLD in ISM_CONF screen.
Check voltage supply.
Check wiring to ISM J3-L1, J3-L2, and J3-L3. Check voltage
transformers and switch gear. Consult power utility if voltage
is low.
108
PRESTART
ALERT
HIGH LINE VOLTAGE 108->Average Line Voltage [VALUE]
exceeded limit of [LIMIT]*.
Check ACTUAL LINE VOLTAGE in POWER screen.
Check OVERVOLTAGE THRESHOLD in ISM_CONF screen.
Check voltage supply.
Check voltage transformers and switch gear. Consult power
utility if voltage is high.
109
PRESS STOP,
PERFORM
GUIDE VANE
CALIBRATION
109Actual Guide Vane Pos Calibra-
tion Required Before Startup
Press STOP button on ICVC and perform Guide Vane Cali-
bration in CONTROLS TEST screen. Check guide vane actu-
ator feedback potentiometer and wiring to CCM J4-9 and J4-
10.