Carrier 19XRV Start-Up, Operation And Maintenance Instructions Manual page 86

F. NORMAL RUN
PRIMARY MESSAGE
RUNNING — RESET ACTIVE
RUNNING — RESET ACTIVE
RUNNING — RESET ACTIVE
RUNNING — TEMP CONTROL
RUNNING — TEMP CONTROL
RUNNING — TEMP CONTROL
RUNNING — DEMAND LIMITED
RUNNING — DEMAND LIMITED
RUNNING — DEMAND LIMITED
RUNNING — DEMAND LIMITED
RUNNING — DEMAND LIMITED
RUNNING — TEMP CONTROL
RUNNING — DEMAND LIMITED
RUNNING — TEMP CONTROL
RUNNING — DEMAND LIMITED
RUNNING — DEMAND LIMITED
G. NORMAL RUN WITH OVERRIDES
ICVC FAULT PRIMARY
STATE MESSAGE
120 RUN CAPACITY
LIMITED
121 RUN CAPACITY
LIMITED
122 RUN CAPACITY
LIMITED
123 RUN CAPACITY
LIMITED
124 RUN CAPACITY
LIMITED
125 RUN CAPACITY
LIMITED
126 RUN CAPACITY
LIMITED
127 RUN CAPACITY
LIMITED
128 RUN CAPACITY
LIMITED
*[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
BY 4-20 mA SIGNAL
REMOTE TEMP SENSOR
CHW TEMP DIFFERENCE
LEAVING CHILLED WATER
ENTERING CHILLED WATER
TEMPERATURE RAMP LOADING
BY DEMAND RAMP LOADING
BY LOCAL DEMAND SETPOINT
BY 4-20 mA SIGNAL
BY CCN SIGNAL
BY LOADSHED/REDLINE
HOT GAS BYPASS
BY LOCAL SIGNAL
ICE BUILD MODE
MOTOR LOAD CURRENT
VFD LINE CURRENT
SECONDARY
MESSAGE
HIGH CONDENSER 120→Condenser Pressure
PRESSURE [VALUE] exceeded limit of
[LIMIT]*.
HIGH MOTOR 121→Comp Motor Winding
TEMPERATURE Temp [VALUE] exceeded
limit of [LIMIT]*.
LOW EVAP REFRIG 122→Evaporator Refrig
TEMP Temp [VALUE] exceeded
limit of [LIMIT]*.
HIGH COMPRESSOR 123→Surge Prevention
LIFT Override: Lift Too High For
Compressor
MANUAL GUIDE VANE 124→Run Capacity Limited:
TARGET Manual Guide Vane Target.
LOW DISCHARGE No Alert message.
SUPERHEAT
HIGH RECTIFIER TEMP 126→Rectifier Temperature
[VALUE] exceeded limit of
[LIMIT]*.
MANUAL SPEED No Alert message.
CONTROL
HIGH INVERTER TEMP 128→Inverter Temperature
[VALUE] exceeded limit of
[LIMIT]*.
Auto chilled water reset active based on external input.
Auto chilled water reset active based on external input.
Auto chilled water reset active based on CHW Delta T in
TEMP_CTL screen.
Default method of temperature control.
Entering Chilled Water control enabled in TEMP_CTL screen.
Ramp Loading in effect. Use RAMP_DEM screen to modify.
Ramp Loading in effect. Use RAMP_DEM screen to modify.
Demand limit set point is less than actual demand.
Demand limit is active based on external auto demand limit option.
Demand limit is active based on control limit signal from CCN.
Demand limit is active based on LOADSHED screen set-up.
Hot gas bypass valve is energized (open). See Surge prevention
description.
Active demand limit manually overridden on MAINSTAT table.
Chiller is running under Ice Build temperature control.
Chiller has reached 100% of Load Current Rating during normal
operation.
Chiller has reached 100% of Line Current Rating during normal
operation.
PRIMARY CAUSE
Check condenser water pump operation.
Check for high condenser water temperatures or
low flow rate. Verify that isolation valves are
open.
Check Cond Press Override setting in SETUP1.
Check for closed valves or restriction in motor
cooling lines.
Check for closed refrigerant isolation valves.
Check Comp Motor Temp Override setting in
SETUP1.
Check refrigerant charge.
Check that optional cooler liquid line isolation
valve is fully open.
Check for excessive condenser flow or low
chilled water flow.
Check for low entering cooler temperature.
Check that condenser inlet and outlet water
nozzles are piped correctly.
Check for waterbox division plate gasket bypass.
Check for high condenser water temperature or
low suction temperature.
Check for high Evaporator or Condenser
approaches.
Check surge prevention parameters in
OPTIONS screen.
Target Guide Vane Position has been forced in
the COMPRESS screen. Select and RELEASE
force to return to normal (automatic) operation.
Check for oil loss or excess refrigerant charge.
Verify that the valves in the oil reclaim lines are
open.
Check Rectifier Temp Override in SETUP1
screen.
Check that VFD refrigerant isolation valves are
open.
Check VFD refrigerant cooling solenoid.
Check for proper VFD cooling fan operation and
blockage.
Chiller is not in automatic temperature control.
Check Inverter Temp Override in SETUP1
screen.
Check that VFD refrigerant isolation valves are
open.
Check VFD refrigerant cooling solenoid.
Check for proper VFD cooling fan operation and
blockage.
86
CAUSE/REMEDY
ADDITIONAL CAUSE/REMEDY