Carrier 19XRV Start-Up, Operation And Maintenance Instructions Manual page 93

J. CHILLER ALERTS (cont)
ICVC FAULT PRIMARY
STATE MESSAGE
151 CONDENSER
PRESSURE ALERT
152 RECYCLE ALERT
153 no message:
ALERT
only
154 POTENTIAL
FREEZE-UP
155 OPTION SENSOR
FAULT
156 OPTION SENSOR
FAULT
157 OPTION SENSOR
FAULT
158 SENSOR ALERT
159 SENSOR ALERT
161 LOSS OF
COMMUNICATION
162 SENSOR ALERT
163 SENSOR ALERT
164 VFD SPEED ALERT LOW VFD SPEED
165 AUTORESTART
PENDING
166 AUTORESTART
PENDING
167 SYSTEM ALERT
168 SENSOR ALERT
*[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.
Table 16 — Alarm and Alert Messages (cont)
SECONDARY
MESSAGE
PUMP RELAY 151→High Condenser Pres-
ENERGIZED sure [VALUE]: Pump Ener-
gized to Reduce Pressure.
EXCESSIVE RECYCLE 152→Excessive recycle
STARTS starts.
no message; ALERT only 153→Lead/Lag Disabled-
Config: Duplicate Chiller
Address.
COND PRESS/TEMP 154→Condenser freeze up
TOO LOW prevention.
REMOTE RESET 155→Sensor Fault/Option
SENSOR Disabled: Remote Reset
Sensor.
AUTO CHILLED WATER 156→Sensor Fault/Option
RESET Disabled: Auto Chilled Water
Reset.
AUTO DEMAND LIMIT 157→Sensor Fault/Option
INPUT Disabled: Auto Demand Limit
Input.
SPARE TEMPERATURE 158→Spare Temperature 1
#1 [VALUE] exceeded limit of
[LIMIT]*.
SPARE TEMPERATURE 159→Spare Temperature 2
#2 [VALUE] exceeded limit of
[LIMIT]*.
WITH WSM 161→WSM Cool Source —
Loss of Communication.
EVAPORATOR 162→Evaporator Approach
APPROACH [VALUE] Exceeded Limit of
[LIMIT]*.
CONDENSER APPROACH 163→Condenser Approach
[VALUE] Exceeded Limit of
[LIMIT]*.
164→Actual VFD Speed
exceeded limit of Target VFD
Speed –10%.
LOW DC BUS VOLTAGE 165→Low DC Bus Voltage:
[VALUE] Exceeded Limit of
[LIMIT]*.
HIGH DC BUS VOLTAGE 166→High DC Bus Voltage:
[VALUE] Exceeded Limit of
[LIMIT]*.
HIGH DISCHARGE TEMP 167→Comp Discharge Temp
[VALUE] exceeded limit of
[LIMIT]*.
HUMIDITY SENSOR 168→Sensor Fault: Check
INPUT Humidity Sensor Input Sensor.
PRIMARY CAUSE
Check sensor wiring and accuracy.
Check condenser flow and water temperature.
Check for fouled tubes.
This alarm is not caused by the High Pressure
Switch.
Chiller load is too low to keep compressor on
line and there has been more than 5 starts in
4 hours.
Increase chiller load, adjust hot gas bypass,
increase RECYCLE RESTART DELTA T from
SETUP1 Screen.
Illegal chiller address configuration in Lead/Lag
screen. Both chillers require a different address.
The condenser pressure transducer is reading a
pressure that could freeze the condenser tubes.
Check for condenser refrigerant leaks.
Check fluid temperature.
Check sensor wiring and accuracy.
Place the chiller in PUMPDOWN mode if the
vessel is evacuated.
Check sensor resistance or voltage drop.
Check for proper wiring to CCM connector J4.
Check sensor resistance or voltage drop.
Check for proper wiring to CCM connector J5.
Check sensor resistance or voltage drop.
Check for proper wiring to CCM connector J5.
Check sensor resistance or voltage drop.
Check for proper wiring to CCM connector J4.
Check Spare Temp #1 Limit in SETUP1 screen.
Check sensor resistance or voltage drop.
Check for proper wiring to CCM connector J4.
Check Spare Temp #2 Limit in SETUP1 screen.
Check settings in WSMDEFME screen.
Check CCN communications link with WSM
(Water System Manager) Module.
Check Supervisory Part of WSM.
Check that refrigerant charge level is adequate,
waterbox division plate gaskets are sealing,
evaporator tubes are not fouled and that oil
reclaim system is working.
Check sensor resistance or voltage drop.
Check for proper wiring.
Check Evap Approach Alert setting in SETUP1
screen.
Check sensors resistance or voltage drop.
Check for proper wiring.
Check Cond Approach Alert setting in SETUP1
screen.
Check for noncondensable gas in the
condenser.
Check that the condenser tubes are not fouled.
Actual VFD Speed on COMPRESS screen must
be at least 90% of Target VFD Speed.
Verify phase to phase and phase to ground line
voltage.
Verify phase to phase and phase to ground line
voltage. Monitor AC line for high transient volt-
age conditions.
Check sensor resistance or voltage drop.
Check for proper wiring.
Check for excessive starts.
Check Comp Discharge Alert setting in SETUP1
screen.
Check humidity sensor wiring on CCM connec-
tors J3 and J5. CCM switch SW2-1 must be in
"OFF" position.
Check Humidity Sensor Input in Controls Test.
93
ADDITIONAL CAUSE/REMEDY