Carrier AquaEdge 19XRV series Operation, Maintenance And Installation Manual page 101

I. CHILLER PROTECTIVE LIMIT FAULTS (cont)
ICVC
PRIMARY
FAULT
MESSAGE
STATE
220 PROTECTIVE LIMIT
221 PROTECTIVE LIMIT UNUSED
222 PROTECTIVE LIMIT
LOSS OF
223
COMMUNICATION
224 PROTECTIVE LIMIT
225 PROTECTIVE LIMIT
PROTECTIVE LIMIT LINE PHASE REVERSAL
226
227 PROTECTIVE LIMIT
228 PROTECTIVE LIMIT
229 PROTECTIVE LIMIT
230 PROTECTIVE LIMIT
231 PROTECTIVE LIMIT
232 PROTECTIVE LIMIT
*[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 Messaged (cont)
SECONDARY
MESSAGE
GROUND FAULT 220Ground Fault Trip;
Check Motor and Current
Sensors.
221UNUSED
LINE FREQUENCY TRIP 222Line Frequency —
[VALUE] exceeded limit of
[LIMIT]; Check Power Supply.
WITH VFD GATEWAY 223Loss of SIO Comm with
MODULE VFD Gateway: Check VFG
Module and Power.
VFD COMMUNICATIONS 224Loss of DPI Comm with
FAULT VFD Gateway: Check VFG to
VFD Comm.
MOTOR CURRENT 225Motor Current Imbal-
IMBALANCE ance: Check VFD Fault
History for Values.
226Line Phase Reversal:
Check Line Phases.
OIL PRESS SENSOR 227Oil Pressure Delta P
FAULT [VALUE] (Pump Off): Check
Pump/Transducers.
LOW OIL PRESSURE 228Low Operating Oil
Pressure [VALUE]: Check Oil
Pump and Filter.
LOW CHILLED WATER 229Low Chilled Water Flow;
FLOW Check Switch/Delta P Config
& Calibration.
LOW CONDENSER 230Low Condenser Water
WATER FLOW Flow; Check Switch/Delta P
Config & Calibration.
HIGH DISCHARGE TEMP 231Comp Discharge Temp
[VALUE] Exceeded Limit of
[LIMIT]*.
LOW REFRIGERANT 232Evaporator Refrig Temp
TEMP [VALUE] exceeded limit of
[LIMIT]*.
PRIMARY CAUSE
Check for condensation on motor terminals.
Check motor power leads for phase to phase or
phase to ground shorts. Disconnect motor from
VFD and megger motor.
Call Carrier Service.
If operating from a generator, check generator
size and speed.
Check utility power supply.
Check VFD communication wiring and
connectors on VFD Gateway and DPI board.
Check for compatibility between ICVC and
Gateway software.
Check VFD communication wiring and
connectors.
Check status lights on DPI Communications
Interface Board.
Call Carrier Service.
Check Motor Current % Imbalance in VFD_-
CONF screen.
Reverse connections of any two line conductors
to circuit breaker.
Check transducer wiring and accuracy.
Check power supply to pump.
Check pump operation.
Check transducer calibration.
Check transducer wiring and accuracy.
Check power supply to pump.
Check pump operation.
Check oil level.
Check for partially closed service valves.
Check oil filters.
Check for foaming oil at start-up.
Check transducer calibration.
Perform pump control test.
Check optional transducer calibration and
wiring.
Check Evaporator Refrigerant Temperature
sensor.
Check chilled water valves.
Check for evaporator saturation temperature
< 34 F if not in Pumpdown Lockout mode. Place
unit in Pumpdown mode before removing
charge.
Perform pump control test.
Check optional transducer calibration and
wiring.
Check condenser water valves.
Check for condenser pressure > 130 PSIG.
Check for closed compressor discharge isola-
tion valve.
Check if chiller was operating in surge.
Check sensor resistance or voltage drop.
Check for proper wiring.
Check for proper condenser flow and
temperature.
Check compressor discharge isolation valve.
Check for proper inlet guide vane and optional
diffuser actuator operation.
Check for proper refrigerant charge.
Check float valve operation.
Check for closed condenser liquid line isolation
valve. If problem occurs at high load, check for
low condenser pressure which causes inade-
quate FLASC orifice differential pressure.
Check for proper water flow and temperature.
Confirm that condenser water enters bottom row
of condenser tubes first.
Check Evaporator Refrigerant Temperature
sensor.
Check for division plate gasket bypass.
Check for fouled tubes.
101
ADDITIONAL CAUSE/REMEDY