Specifications

93
Table 15 — ICVC Primary and Secondary Messages and
Custom Alarm/Alert Messages with Troubleshooting Guides (cont)
J. CHILLER ALERTS (cont)
STATE PRIMARY MESSAGE
SECONDARY
MESSAGE
ALARM MESSAGE
PRIMARY CAUSE
ADDITIONAL
CAUSE/REMEDY
160 SENSOR ALERT
EVAPORATOR
APPROACH
160->Evaporator
Approach [VALUE]
Exceeded Limit of
[LIMIT]*
Check position of refrigerant liquid
line isolation valve.
Check EVAP APPROACH ALERT setting in
SETUP1 screen.
Check Evaporator Liquid Flow.
See Table 5.
Check EVAP REFRIG LIQUID TEMP and
CHILLED LIQUID TEMP sensor resistances
or voltage drops.
Check for proper EVAP REFRIG LIQUID TEMP
and CHILLED LIQUID TEMP sensor wiring.
Check for oil loss.
Check for low refrigerant charge.
Check float valve operation and for refrigerant
stacking in the condenser.
Check for evaporator division plate bypass.
Check for fouled tubes.
Check for air in water box.
161 SENSOR ALERT
CONDENSER
APPROACH
161->Condenser
Approach [VALUE]
Exceeded Limit of
[LIMIT]*
Check COND APPROACH ALERT setting in
SETUP1 screen.
Check Condenser Liquid flow.
See Table 5.
Check CONDENSER PRESSURE and LEAVING
COND LIQUID temperature sensor resistances or
voltage drops.
Check for proper CONDENSER PRESSURE and
LEAVING COND LIQUID temperature sensor
wiring.
Check condenser shell temperature against
condenser pressure measured with refrigerant
gage for evidence of noncondensables in
refrigerant charge.
Check for condenser division plate bypass.
Check for fouled condenser tubes.
Check for air in water box.
162 SENSOR ALERT
HIGH DISCHARGE
TEMP
162->Comp Discharge
Temp [VALUE] Exceeded
Limit of [LIMIT]*
Check position of condenser isolation valve.
Check COMP DISCHARGE ALERT setting in
SETUP1 screen.
See Table 5.
Check COMP DISCHARGE TEMP sensor
resistance or voltage drop.
Check for proper condenser liquid flow and
temperature.
Check for proper wiring.
Check for fouled tubes, plugged strainers,
or noncondensables in the refrigerant.
163
LOSS OF
COMMUNICATION
WITH WSM
163->WSM Cool
Source - Loss of
Communication
Communications interrupted between
supervisory component and equipment
component of WSM (Water System Manager).
Check settings in WSMDEFME screen.
Check CCN communications link with WSM.
Check supervisory part of WSM.
164 SYSTEM ALERT
HIGH OIL
PRESSURE
164->High Oil Pressure
[VALUE], Check Oil
Regulator and Valves
See Table 5.
Check oil pressure regulator isolation valve.
Check oil pressure regulator.
Check for bent oil lines.
Check Oil Sump Pressure and Oil Pressure
Leaving filter transducer resistances or
voltage drops.
Check OIL PRESSURE DELTA P wiring to CCM.
Check for debris in Compressor Inlet Bearing
Oil Orifice Strainers.
Normal alert if chiller was charged and started
within a few hours of pulling dehydration vacuum
with oil heater on.
168 SENSOR ALERT
HUMIDITY
SENSOR INPUT
168->Sensor Fault:
Check Humidity
Sensor Input
See Table 5.
Humidity Sensor Input voltage is outside of
0.5 V to 4.5 V range.
Check Humidity Sensor wiring to CCM terminals
J3-7, J3-9, and J4-10.
Check Humidity Sensor Input in Controls
Test screen.
Check resistance 4.3 kohm load resistor
between CCM J3-7 and J3-8.
*[LIMIT] is shown on the ICVC 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 tripped.