Specifications

82
Table 15 — ICVC Primary and Secondary Messages and
Custom Alarm/Alert Messages with Troubleshooting Guides (cont)
*[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.
D. PRE-START ALERTS: These alerts are only declared after a start command is issued and 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 RECTIFIER
TEMP
101->Rectifier Temperature [VALUE]
exceeded limit of [LIMIT]*.
Check RECTIFIER TEMPERATURE in POWER screen.
Check VFD refrigerant isolation valves.
Check VFD power module cooling fan.
Check RECTIFIER TEMP OVERRIDE in SETUP1 screen.
See Table 5.
102
PRESTART
ALERT
HIGH MOTOR
TEMPERATURE
102->Comp Motor Winding Temp
[VALUE] exceeded limit of [LIMIT]*.
Check COMP MOTOR WINDING TEMP in COMPRESS screen.
Check motor temperature sensors for wiring and accuracy.
Check motor cooling line for proper operation, or restrictions.
Check for excessive starts within a short time span.
Check MOTOR TEMP OVERRIDE in SETUP1 screen.
See Table 5.
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 Sensor to cool.
Check for Compressor Discharge sensor wiring and accuracy.
Check for excessive starts.
Check COMP DISCHARGE ALERT in SETUP1 screen.
See Table 5.
104
PRESTART
ALERT
LOW REFRIGERANT
TEMP
104->Evaporator Refrig Temp
[VALUE] exceeded limit of [LIMIT]*.
Check EVAPORATOR PRESSURE in HEATEX screen.
Check Evaporator Pressure transducer wiring and accuracy.
Check for low chilled fluid supply temperatures.
Check refrigerant charge.
Check REFRIG OVERRIDE DELTA T in SETUP1 screen.
See Table 5.
105
PRESTART
ALERT
LOW OIL
TEMPERATURE
105->Oil Sump Temp
[VALUE] exceeded limit of [LIMIT]*.
Check OIL SUMP TEMP in ICVC default screen.
Check Oil Sump Temperature sensor wiring and accuracy.
Check 1C oil heater contactor/relay and power.
Check oil level and oil pump operation. Confirm that oil
reclaim valve is closed when chiller is not running.
See Table 5.
Check oil heater element for carbon build-up.
106
PRESTART
ALERT
HIGH CONDENSER
PRESSURE
106->Condenser Pressure
[VALUE] exceeded limit of [LIMIT]*.
Check CONDENSER PRESSURE in HEATEX screen.
Check Condenser Pressure transducer wiring and accuracy.
Check for high condenser liquid temperatures.
Check COND PRESS OVERRIDE in SETUP1 screen.
See Table 5.
107
PRESTART
ALERT
LOW LINE VOLTAGE
107->Percent Line Voltage
[VALUE] exceeded limit of [LIMIT]*.
Check Line Voltage in POWER screen
Check voltage supply.
Check voltage transformers. Consult power utility if voltage is low.
Check FU1, FU2, and FU3 in the VFD.
Check connectors on VFD Line Synch Printed Circuit Board.
See Table 5.
108
PRESTART
ALERT
HIGH LINE VOLTAGE
108->Percent Line Voltage
[VALUE] exceeded limit of [LIMIT]*.
Check Line Voltage in POWER screen.
Check voltage supply.
Check power transformers.
Consult power utility if voltage is high.
See Table 5.
109
PRESTART
ALERT
HIGH INVERTER TEMP
109->Inverter Temperature
[VALUE] exceeded limit of [LIMIT]*.
Check INVERTER TEMPERATURE in POWER screen.
Check VFD refrigerant isolation valves.
Check VFD power module cooling fan.
Check INVERTER TEMP OVERRIDE in SETUP1 screen.
See Table 5.