Carrier 19XRV Start-Up, Operation And Maintenance Instructions Manual page 90

Table 16 -- Alarm and Alert Messages (cont)
J. CHILLER ALERTS (cont)
ICVC FAULT PRIMARY SECONDARY PRIMARY CAUSE ADDITIONAL CAUSE/REMEDY
STATE MESSAGE MESSAGE
151 CONDENSER PUMP RELAY 151_High Condenser Pres- Check sensor wiring and accuracy.
PRESSURE ALERT ENERGIZED sure [VALUE]: Pump Ener- Check condenser flow and water temperature.
gized to Reduce Pressure. Check for fouled tubes.
This alarm is not caused by the High Pressure
Switch.
152 RECYCLE ALERT EXCESSIVE RECYCLE 152_Excessive recycle Chiller load is too low to keep compressor on
STARTS starts, 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.
153 no message: no message; ALERT only 153_Lead/Lag Disabled- Illegal chiller address configuration in Lead/Lag
ALERT Config: Duplicate Chiller screen. Both chillers require a different address.
only Address.
154 POTENTIAL COND PRESS/TEMP 154_Condenser freeze up The condenser pressure transducer is reading a
FREEZE=UP TOO LOW )revention. 3ressure 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.
155 OPTION SENSOR REMOTE RESET 155-_Sensor Fault/Option Check sensor resistance or voltage drop.
FAULT SENSOR Disabled: Remote Reset Check for proper wiring to CCM connector J4.
Sensor.
156 OPTION SENSOR AUTO CHILLED WATER 156_-_Sensor Fault/Option Check sensor resistance or voltage drop.
FAULT RESET Disabled: Auto Chilled Water Check for proper wiring to CCM connector J5.
Reset.
157 OPTION SENSOR AUTO DEMAND LIMIT 157-_Sensor Fault/Option Check sensor resistance or voltage drop.
FAULT INPUT Disabled: Auto Demand Limit Check for proper wiring to CCM connector J5.
Input.
158 SENSOR ALERT SPARE TEMPERATURE 158_-_Spare Temperature 1
#1 [VALUE] exceeded limit of
[LIMIT]*.
159 SENSOR ALERT SPARE TEMPERATURE 159_Spare Temperature 2
#2 [VALUE] exceeded limit of
[LIMIT]*.
161 LOSS OF WITH WSM 161_-_WSM Cool Source --
COMMUNICATION Loss of Communication.
162 SENSOR ALERT EVAPORATOR
APPROACH
162-_ Evaporator Approach
[VALUE] Exceeded Limit of
[LIMIT]*.
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.
163 SENSOR ALERT CONDENSER APPROACH 163-_Condenser Approach
[VALUE] Exceeded Limit of
[LIMIT]*.
164 VFD SPEED ALERT LOW VFD SPEED 164_Actual VFD Speed
exceeded limit of Target VFD
Speed -10%.
165 AUTORESTART LOW DC BUS VOLTAGE 165_Low DC Bus Voltage: Verify phase to phase and phase to ground line
PENDING [VALUE] Exceeded Limit of voltage.
[LIMIT]*.
166 AUTORESTART HIGH DC BUS VOLTAGE 166_High DC Bus Voltage: Verify phase to phase and phase to ground line
PENDING [VALUE] Exceeded Limit of voltage. Monitor AC line for high transient volt-
[LIMIT]*. age conditions.
167 SYSTEM ALERT HIGH DISCHARGE TEMP 167_Comp Discharge Temp Check sensor resistance or voltage drop.
[VALUE] exceeded limit of Check for proper wiring.
[LIMIT]*. Check for excessive starts.
Check Comp Discharge Alert setting in SETUP1
screen.
168 SENSOR ALERT HUMIDITY SENSOR 168-_Sensor Fault: Check Check humidity sensor wiring on CCM connec-
INPUT Humidity Sensor Input Sensor. tots J3 and J5.
Check Humidity Sensor Input in Controls Test.
*[LIMIT] is shown on the ICVC as the temperature, pressure, volta e, 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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