112
Table 19 — 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
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.
165
AUTORESTART
PENDING
VFD COMMUNICATIONS
FAULT
165-> Loss of DPI Comm
With VFD Gateway, Check
VFG to VFD Comm
Check that the gateway board is properly con-
nected to the DPI. Check ribbon cable. Make sure
both boards have power to them.
166
AUTORESTART
PENDING
VFD COMMUNICATIONS
FAULT
166-> Loss of SIO Comm
With VFD Gateway; Check
VFG module and Power
Check the SIO communication cable from the CCM
board to the power panel, then the cable from the
power panel to the VFD gateway. Check power to
the VFD (main circuit breaker may be tripped)
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.
169 MACHINE ALERT
CONDENSER LIQUID LEVEL
LOW
169->Sensor Fault:
Condenser Liquid Level
Low
Check EXV operation.
170 MACHINE ALERT
CONDENSER LIQUID LEVEL
HIGH
170->Sensor Fault:
Condenser Liquid Level
High
Check EXV operation.
*[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.
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