Specifications

109
Table 17 — ICVC Primary and Secondary Messages and
Custom Alarm/Alert Messages with Troubleshooting Guides (cont)
I. CHILLER PROTECTIVE LIMIT FAULTS (cont)
*[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. "Exceeded Limit" in Alarm or Alert mes-
sages may mean the value is above or below a threshold.
J. CHILLER ALERTS
*[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. "Exceeded Limit" in Alarm or Alert mes-
sages may mean the value is above or below a threshold
ICVC
FAULT
STATE
PRIMARY MESSAGE SECONDARY MESSAGE PRIMARY CAUSE
ADDITIONAL
CAUSE/REMEDY
248 PROTECTIVE LIMIT
SPARE TEMPERATURE #1 248->Spare Temperature #1 [VALUE]
exceeded limit of [LIMIT]*.
Check component that SPARE TEMPERATURE
#1 is monitoring. Check SPARE TEMP #1
ENABLE and SPARE TEMP #1 LIMIT in SETUP1
screen. Check SPARE TEMPERATURE #1 sensor
resistance or voltage drop. Check SPARE TEM-
PERATURE #1 wiring to CCM J4-25 and J4-26.
249 PROTECTIVE LIMIT
SPARE TEMPERATURE #2 249->Spare Temperature #2 [VALUE]
exceeded limit of [LIMIT]*.
Check component that SPARE TEMPERATURE
#2 is monitoring. Check SPARE TEMP #2
ENABLE and SPARE TEMP #2 LIMIT in SETUP1
screen. Check SPARE TEMPERATURE #2 sensor
resistance or voltage drop. Check SPARE TEM-
PERATURE #2 wiring to CCM J4-27 and J4-28.
250 PROTECTIVE LIMIT
REFRIGERANT LEAK SENSOR 250->Refrigerant Leak Sensor [VALUE]
exceeded limit of [LIMIT]*
REFRIGERANT LEAK OPTION is Enabled and
the REFRIGERANT LEAK SENSOR output
exceeded REFRIGERANT LEAK ALARM mA.
Check for refrigerant leaks. Check leak detector for
proper operation. Check REFRIGERANT LEAK
ALARM mA setting in the OPTIONS screen.
Check 4-20 mA or 1-5 V output from refrigerant
leak sensor to CCM J5-5 and J5-6. Confirm that
CCM SW2 dip switch 1 is in the correct position.
251 PROTECTIVE LIMIT
ISM CONFIG CONFLICT 251->ISM Config Conflict; Verify and
Save ISM Config Data to Reset
The ISM_CONF table stored in the ISM does not
match that which is stored in the ICVC. This is a
normal fault if an ICVC has been uploaded with
software when it was not attached to the CCM. In
order to recall parameters stored in the ISM: Enter
ISM_CONF screen and then immediately exit
ISM_CONF screen by pressing EXIT then CAN-
CEL. Next, re-enter the ISM_CONF screen a sec-
ond time so parameters stored in the ISM will be
uploaded into the ICVC. Confirm that the settings
in the ISM_CONF screen are correct. Press EXIT
then SAVE to store the ISM_CONF screen set-
tings in both the ICVC and ISM.
252 Not Used Not Used 252->Not Used
253 PROTECTIVE LIMIT
GUIDE VANE CALIBRATION 253->Guide Vane Fault [VALUE]. Check
Calibration
Alarm before start indicates guide vane opening
has not closed to less than 4%. Alarm while run-
ning indicates guide vane position is < -1% or >
103%, or feedback voltage between CCM J4-9
and J4-10 is < .045 or > 3.15 VDC. Enter CON-
TROL TEST and conduct Guide Vane Calibration.
Check wiring between the guide vane feedback
potentiometer and CCM terminals J4-9 and J4-10.
Check the 10,000 ohm guide vane position feed-
back potentiometer.
254 PROTECTIVE LIMIT
HIGH COND WATER FLOW 254->High Flow: Condenser Water Delta
P Limit (VALUE) exceeded limit of
[LIMIT]*
COND HI FLOW ALARM OPT is enabled and
CONDENSER WATER DELTA P has exceeded
configured limit. Check FLOW DELTA P DISPLAY
and COND HI FLOW DEL P LIMIT in SETUP1
screen. Check optional Condenser Water Pres-
sure transducer wiring and accuracy. Confirm that
5 V reference signal is available between CCM J3-
19 and J3-21 and J3-22 and J3-24. Check for dis-
connected, grounded, or shorted wiring. If con-
denser water pressure transducers are not
installed, check for presence of resistors and
jumpers CCM terminals J3-19 through J3-24. See
Chiller Controls Schematic if flow switches are
used.
STATE PRIMARY
MESSAGE
SECONDARY
MESSAGE
PRIMARY CAUSE ADDITIONAL
CAUSE/REMEDY
140 SENSOR ALERT
LEAVING COND
WATER TEMP
140->Sensor Fault: Check Leav-
ing Cond Water Sensor
LEAVING CONDENSER WATER temperature sensor reading is out of
range. Check LEAVING CONDENSER WATER sensor resistance or
voltage drop.
Check for proper wiring to CCM J4-7 and J4-8. Check for grounded sen-
sor leads.
141 SENSOR ALERT
ENTERING
COND WATER
TEMP
141->Sensor Fault: Check Enter-
ing Cond Water Sensor
ENTERING CONDENSER WATER temperature sensor reading is out of
range. Check LEAVING CONDENSER WATER sensor resistance or
voltage drop.
Check for proper wiring to CCM J4-7 and J4-8. Check for grounded sen-
sor leads.
142
LOW OIL
PRESSURE
ALERT
CHECK OIL FIL-
TER
142->Low Oil Pressure Alert.
Check Oil Filter
Check for partially or closed shut-off valves.
Check oil filter. Check oil pump and power supply. Check oil level. Check
for foaming oil at start-up.
Check Oil Sump Pressure and Oil Pump Discharge Pressure transducer
accuracy and wiring to CCM J3-1 through J3-6.