Saturday, July 14, 2012

ICVC Alert Codes

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PRE-START ALERTS: These alerts only delay start-up. When alert is corrected, the start-up will continue. No reset is necessary

ICVC FAULT STATE = 100
PRIMARY MESSAGE = PRESTART ALERT
SECONDARY MESSAGE = STARTS LIMIT EXCEEDED
PRIMARY CAUSE = 100→Excessive compressor starts (8 in 12 hours).
ADDITIONAL CAUSE/REMEDY = Depress the RESET softkey if additional start is required. Reassess start-up requirements.

ICVC FAULT STATE = 101
PRIMARY MESSAGE = PRESTART ALERT
SECONDARY MESSAGE = HIGH BEARING TEMPERATURE
PRIMARY CAUSE = 101→Comp Thrust Brg Temp [VALUE] exceeded limit of [LIMIT]*.
ADDITIONAL CAUSE/REMEDY =
Check oil heater for proper operation.
Check for low oil level, partially closed oil supply valves, clogged oil filters.
Check the sensor wiring and accuracy.
Check Comp Thrust Brg Alert setting in SETUP1 screen.

ICVC FAULT STATE = 102
PRIMARY MESSAGE = PRESTART ALERT
SECONDARY MESSAGE = HIGH MOTOR TEMPERATURE
PRIMARY CAUSE = 102→Comp Motor Winding Temp [VALUE] exceeded limit of [LIMIT]*.
ADDITIONAL CAUSE/REMEDY =
Check motor sensors for wiring and accuracy.
Check motor cooling line for proper operation, or restrictions.
Check for excessive starts within a short time span.
Check Comp Motor Temperature Override setting in SETUP1 screen.

ICVC FAULT STATE = 103
PRIMARY MESSAGE = PRESTART ALERT
SECONDARY MESSAGE = HIGH DISCHARGE TEMP
PRIMARY CAUSE = 103→Comp Discharge Temp [VALUE] exceeded limit of [LIMIT]*.
ADDITIONAL CAUSE/REMEDY =
Allow discharge sensor to cool.
Check sensor wiring and accuracy.
Check for excessive starts.
Check Comp Discharge Alert setting in SETUP1 screen.

ICVC FAULT STATE = 104
PRIMARY MESSAGE = PRESTART ALERT
SECONDARY MESSAGE = LOW REFRIGERANT TEMP
PRIMARY CAUSE = 104→Evaporator Refrig Temp [VALUE] exceeded limit of [LIMIT]*.
ADDITIONAL CAUSE/REMEDY =
Check transducer wiring and accuracy.
Check for low chilled fluid supply temperatures.
Check refrigerant charge.
Check Refrig Override Delta T in SETUP1 screen.

ICVC FAULT STATE = 105
PRIMARY MESSAGE = PRESTART ALERT
SECONDARY MESSAGE = LOW OIL TEMPERATURE
PRIMARY CAUSE = 105→Oil Sump Temp [VALUE] exceeded limit of [LIMIT]*.
ADDITIONAL CAUSE/REMEDY =
Check oil heater contactor/relay and power.
Check oil level and oil pump operation.

ICVC FAULT STATE = 106
PRIMARY MESSAGE = PRESTART ALERT
SECONDARY MESSAGE = HIGH CONDENSER PRESSURE
PRIMARY CAUSE = 106→Condenser Pressure [VALUE] exceeded limit of [LIMIT]*.
ADDITIONAL CAUSE/REMEDY =
Check transducer wiring and accuracy.
Check for high condenser water temperatures.
Check high condenser pressure switch wiring.

ICVC FAULT STATE = 107
PRIMARY MESSAGE = PRESTART ALERT
SECONDARY MESSAGE = LOW LINE VOLTAGE
PRIMARY CAUSE = 107→Percent Line Voltage [VALUE] exceeded limit of [LIMIT]*.
ADDITIONAL CAUSE/REMEDY =
Check voltage supply.
Check voltage transformers and switch gear.
Consult power utility if voltage is low.

ICVC FAULT STATE = 108
PRIMARY MESSAGE = PRESTART ALERT
SECONDARY MESSAGE = HIGH LINE VOLTAGE
PRIMARY CAUSE = 108→Percent Line Voltage [VALUE] exceeded limit of [LIMIT]*.
ADDITIONAL CAUSE/REMEDY =
Check voltage supply.
Check power transformers.
Consult power utility if voltage is high.

ICVC FAULT STATE = 109
PRIMARY MESSAGE = PRESTART ALERT
SECONDARY MESSAGE = GUIDE VANE CALIBRATION
PRIMARY CAUSE = 109→Actual Guide Vane Pos Calibration Required Before Startup.
ADDITIONAL CAUSE/REMEDY =
Press STOP button on ICVC and perform Guide Vane Calibration in Controls Test screen.
Check guide vane actuator feedback potentiometer.

ICVC FAULT STATE = 110
PRIMARY MESSAGE = PRESTART ALERT
SECONDARY MESSAGE = HIGH RECTIFIER TEMP
PRIMARY CAUSE = 110→Rectifier Temperature [VALUE] exceeded limit of [LIMIT]*.
ADDITIONAL CAUSE/REMEDY =
Check that VFD refrigerant isolation valves are open.
Check VFD refrigerant cooling solenoid and refrigerant strainer.
Check for proper VFD cooling fan operation and blockage.

ICVC FAULT STATE = 111
PRIMARY MESSAGE = PRESTART ALERT
SECONDARY MESSAGE = HIGH INVERTER TEMP
PRIMARY CAUSE = 111→Inverter Temperature [VALUE] exceeded limit of [LIMIT]*.
ADDITIONAL CAUSE/REMEDY =
Check that VFD refrigerant isolation valves are open.
Check VFD refrigerant cooling solenoid and refrigerant strainer.
Check for proper VFD cooling fan operation and blockage.

*[LIMIT] is shown on the ICVC as temperature, pressure, voltage, etc., predefined or selected by the operator as an override or an alert. [VALUE] is the actual pressure, temperature, voltage, etc., at which the control tripped

NORMAL RUN WITH OVERRIDES

ICVC FAULT STATE = 120
PRIMARY MESSAGE = RUN CAPACITY LIMITED
SECONDARY MESSAGE = HIGH CONDENSER PRESSURE
PRIMARY CAUSE = 120→Condenser Pressure [VALUE] exceeded limit of [LIMIT]*.
ADDITIONAL CAUSE/REMEDY =
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.

ICVC FAULT STATE = 121
PRIMARY MESSAGE = RUN CAPACITY LIMITED
SECONDARY MESSAGE = HIGH MOTOR TEMPERATURE
PRIMARY CAUSE = 121→Comp Motor Winding Temp [VALUE] exceeded limit of [LIMIT]*.
ADDITIONAL CAUSE/REMEDY =
Check for closed valves or restriction in motor cooling lines.
Check for closed refrigerant isolation valves.
Check Comp Motor Temp Override setting in SETUP1.

ICVC FAULT STATE = 122
PRIMARY MESSAGE = RUN CAPACITY LIMITED
SECONDARY MESSAGE = LOW EVAP REFRIG TEMP
PRIMARY CAUSE = 122→Evaporator Refrig Temp [VALUE] exceeded limit of [LIMIT]*.
ADDITIONAL CAUSE/REMEDY =
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.

ICVC FAULT STATE = 123
PRIMARY MESSAGE = RUN CAPACITY LIMITED
SECONDARY MESSAGE = HIGH COMPRESSOR LIFT
PRIMARY CAUSE = 123→Surge Prevention Override: Lift Too High For Compressor
ADDITIONAL CAUSE/REMEDY =
Check for high condenser water temperature or low suction temperature.
Check for high Evaporator or Condenser approaches.
Check surge prevention parameters in OPTIONS screen.

ICVC FAULT STATE = 124
PRIMARY MESSAGE = RUN CAPACITY LIMITED
SECONDARY MESSAGE = MANUAL GUIDE VANE TARGET
PRIMARY CAUSE = 124→Run Capacity Limited: Manual Guide Vane Target.
ADDITIONAL CAUSE/REMEDY = Target Guide Vane Position has been forced in the COMPRESS screen. Select and RELEASE force to return to normal (automatic) operation.

ICVC FAULT STATE = 125
PRIMARY MESSAGE = RUN CAPACITY LIMITED
SECONDARY MESSAGE = LOW DISCHARGE SUPERHEAT
PRIMARY CAUSE = No Alert message.
ADDITIONAL CAUSE/REMEDY = Check for oil loss or excess refrigerant charge.
Verify that the valves in the oil reclaim lines are open.

ICVC FAULT STATE = 126
PRIMARY MESSAGE = RUN CAPACITY LIMITED
SECONDARY MESSAGE = HIGH RECTIFIER TEMP
PRIMARY CAUSE = 126→Rectifier Temperature [VALUE] exceeded limit of [LIMIT]*.
ADDITIONAL CAUSE/REMEDY =
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.

ICVC FAULT STATE = 127
PRIMARY MESSAGE = RUN CAPACITY LIMITED
SECONDARY MESSAGE = MANUAL SPEED CONTROL
PRIMARY CAUSE = No Alert message.
ADDITIONAL CAUSE/REMEDY = Chiller is not in automatic temperature control.

ICVC FAULT STATE = 128
PRIMARY MESSAGE = RUN CAPACITY LIMITED
SECONDARY MESSAGE = HIGH INVERTER TEMP
PRIMARY CAUSE = 128→Inverter Temperature [VALUE] exceeded limit of [LIMIT]*.
ADDITIONAL CAUSE/REMEDY =
Check Inverter Temp Override in SETUP1 screen.
Check that VFD refrigerant isolation valves are open.
Check VFD refrigerant cooling solenoid.

*[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.

CHILLER ALERTS

ICVC FAULT STATE = 140
PRIMARY MESSAGE = SENSOR ALERT
SECONDARY MESSAGE = LEAVING COND WATER TEMP
PRIMARY CAUSE = 140→Sensor Fault: Check Leaving Cond Water Sensor.
ADDITIONAL CAUSE/REMEDY =
Check sensor resistance or voltage drop.
Check for proper wiring.

ICVC FAULT STATE = 141
PRIMARY MESSAGE = SENSOR ALERT
SECONDARY MESSAGE = ENTERING COND WATER TEMP
PRIMARY CAUSE = 141→Sensor Fault: Check Entering Cond Water Sensor.
ADDITIONAL CAUSE/REMEDY =
Check sensor resistance or voltage drop.
Check for proper wiring.

ICVC FAULT STATE = 142
PRIMARY MESSAGE = LOW OIL PRESSURE ALERT
SECONDARY MESSAGE = CHECK OIL FILTER
PRIMARY CAUSE = 142→Low Oil Pressure Alert. Check Oil Filter.
ADDITIONAL CAUSE/REMEDY =
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 transducer wiring and accuracy

ICVC FAULT STATE = 143
PRIMARY MESSAGE = AUTORESTART PENDING
SECONDARY MESSAGE = LINE CURRENT IMBALANCE
PRIMARY CAUSE = 143→Line Current Imbalance: Check VFD Fault History for Values.
ADDITIONAL CAUSE/REMEDY =
Power loss has been detected in any phase.
Chiller automatically restarting.

ICVC FAULT STATE = 144
PRIMARY MESSAGE = AUTORESTART PENDING
SECONDARY MESSAGE = LINE VOLTAGE DROP OUT
PRIMARY CAUSE = 144→Single Cycle Line Voltage Dropout.
ADDITIONAL CAUSE/REMEDY =
A drop in line voltage has been detected within 2 voltage cycles.
Chiller automatically restarting if Auto Restart is enabled in OPTIONS screen

ICVC FAULT STATE = 145
PRIMARY MESSAGE = AUTORESTART PENDING
SECONDARY MESSAGE = HIGH LINE VOLTAGE
PRIMARY CAUSE = 145→High Percent Line Voltage [VALUE].
ADDITIONAL CAUSE/REMEDY = Check phase to phase and phase to ground line power.

ICVC FAULT STATE = 146
PRIMARY MESSAGE = AUTORESTART PENDING
SECONDARY MESSAGE = LOW LINE VOLTAGE
PRIMARY CAUSE = 146→Low Percent Line Voltage [VALUE].
ADDITIONAL CAUSE/REMEDY = Check phase to phase and phase to ground line power.

ICVC FAULT STATE = 147
PRIMARY MESSAGE = AUTORESTART PENDING
SECONDARY MESSAGE = VFD MODULE RESET
PRIMARY CAUSE = 147->VFD Module Power-On Reset When Running.
ADDITIONAL CAUSE/REMEDY = VFD Module has detected a hardware fault due to electrical noise, power loss or software and has reset. Chiller automatically restarting.
Check for power loss and sources of electromagnetic interference.

ICVC FAULT STATE = 148
PRIMARY MESSAGE = AUTORESTART PENDING
SECONDARY MESSAGE = POWER LOSS
PRIMARY CAUSE = 148→Control Power-Loss When Running
ADDITIONAL CAUSE/REMEDY = Check 24 vac control power supply to ICVC.

ICVC FAULT STATE = 149
PRIMARY MESSAGE = SENSOR ALERT
SECONDARY MESSAGE = HIGH DISCHARGE TEMP
PRIMARY CAUSE = 149→Comp Discharge Temp [VALUE] Exceeded Limit of [LIMIT]*.
ADDITIONAL CAUSE/REMEDY =
Check sensor resistance or voltage drop.
Check for proper wiring.
Check for proper inlet guide vane and optional diffuser actuator operation.
Check for proper condenser flow and temperature.
Check for high lift or low load.
Check for fouled tubes or noncondensables in the chiller.

ICVC FAULT STATE = 150
PRIMARY MESSAGE = SENSOR ALERT
SECONDARY MESSAGE = HIGH BEARING TEMPERATURE
PRIMARY CAUSE = 150→Comp Thrust Brg Temp [VALUE] exceeded limit of [LIMIT]*.
ADDITIONAL CAUSE/REMEDY =
Check sensor resistance or voltage drop.
Check for proper wiring.
Check for partially closed service valves.
Check oil cooler TXV.
Check oil level and oil temperature.

ICVC FAULT STATE = 151
PRIMARY MESSAGE = CONDENSER PRESSURE ALERT
SECONDARY MESSAGE = PUMP RELAY ENERGIZED
PRIMARY CAUSE = 151→High Condenser Pressure [VALUE]: Pump Energized to Reduce Pressure
ADDITIONAL CAUSE/REMEDY =
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.

ICVC FAULT STATE = 152
PRIMARY MESSAGE = RECYCLE ALERT
SECONDARY MESSAGE = EXCESSIVE RECYCLE STARTS
PRIMARY CAUSE = 152→Excessive recycle starts.
ADDITIONAL CAUSE/REMEDY = 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.

ICVC FAULT STATE = 153
PRIMARY MESSAGE = no message: ALERT only
SECONDARY MESSAGE =  no message: ALERT only
PRIMARY CAUSE = 153→Lead/Lag Disabled- Config: Duplicate Chiller Address.
ADDITIONAL CAUSE/REMEDY = Illegal chiller address configuration in Lead/Lag screen. Both chillers require a different address.

ICVC FAULT STATE = 154
PRIMARY MESSAGE = POTENTIAL FREEZE-UP
SECONDARY MESSAGE = COND PRESS/TEMP TOO LOW
PRIMARY CAUSE = 154→Condenser freeze up prevention.
ADDITIONAL CAUSE/REMEDY =
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.

ICVC FAULT STATE = 155
PRIMARY MESSAGE = OPTION SENSOR FAULT
SECONDARY MESSAGE = REMOTE RESET SENSOR
PRIMARY CAUSE = 155→Sensor Fault/Option Disabled: Remote Reset Sensor.
ADDITIONAL CAUSE/REMEDY = Check sensor resistance or voltage drop.
Check for proper wiring to CCM connector J4.

ICVC FAULT STATE = 156
PRIMARY MESSAGE = OPTION SENSOR FAULT
SECONDARY MESSAGE = AUTO CHILLED WATER RESET
PRIMARY CAUSE = 156→Sensor Fault/Option Disabled: Auto Chilled Water Reset.
ADDITIONAL CAUSE/REMEDY = Check sensor resistance or voltage drop.
Check for proper wiring to CCM connector J5.

ICVC FAULT STATE = 157
PRIMARY MESSAGE = OPTION SENSOR FAULT
SECONDARY MESSAGE = AUTO DEMAND LIMIT INPUT
PRIMARY CAUSE = 157→Sensor Fault/Option Disabled: Auto Demand Limit Input.
ADDITIONAL CAUSE/REMEDY = Check sensor resistance or voltage drop.
Check for proper wiring to CCM connector J5.

ICVC FAULT STATE = 158
PRIMARY MESSAGE = SENSOR ALERT
SECONDARY MESSAGE = SPARE TEMPERATURE #1
PRIMARY CAUSE = 158→Spare Temperature 1 [VALUE] exceeded limit of [LIMIT]*.
ADDITIONAL CAUSE/REMEDY = Check sensor resistance or voltage drop.
Check for proper wiring to CCM connector J4.
Check Spare Temp #1 Limit in SETUP1 screen.

*[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.

ICVC FAULT STATE = 159
PRIMARY MESSAGE = SENSOR ALERT
SECONDARY MESSAGE = SPARE TEMPERATURE #2
PRIMARY CAUSE = 159→Spare Temperature 2 [VALUE] exceeded limit of [LIMIT]*.
ADDITIONAL CAUSE/REMEDY = Check sensor resistance or voltage drop.
Check for proper wiring to CCM connector J4.
Check Spare Temp #2 Limit in SETUP1 screen.

ICVC FAULT STATE = 161
PRIMARY MESSAGE = LOSS OF COMMUNICATION
SECONDARY MESSAGE = WITH WSM
PRIMARY CAUSE = 161→WSM Cool Source — Loss of Communication.
ADDITIONAL CAUSE/REMEDY =
Check settings in WSMDEFME screen.
Check CCN communications link with WSM (Water System Manager) Module.
Check Supervisory Part of WSM

ICVC FAULT STATE = 162
PRIMARY MESSAGE = SENSOR ALERT
SECONDARY MESSAGE = EVAPORATOR APPROACH
PRIMARY CAUSE = 162→Evaporator Approach [VALUE] Exceeded Limit of [LIMIT]*.
ADDITIONAL CAUSE/REMEDY = 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.

ICVC FAULT STATE = 163
PRIMARY MESSAGE = SENSOR ALERT
SECONDARY MESSAGE = CONDENSER APPROACH
PRIMARY CAUSE = 163→Condenser Approach [VALUE] Exceeded Limit of [LIMIT]*.
ADDITIONAL CAUSE/REMEDY = 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.

ICVC FAULT STATE = 164
PRIMARY MESSAGE = VFD SPEED ALERT
SECONDARY MESSAGE = LOW VFD SPEED
PRIMARY CAUSE = 164→Actual VFD Speed exceeded limit of Target VFD Speed –10%.
ADDITIONAL CAUSE/REMEDY =

ICVC FAULT STATE = 165
PRIMARY MESSAGE = AUTORESTART PENDING
SECONDARY MESSAGE = LOW DC BUS VOLTAGE
PRIMARY CAUSE = 165→Low DC Bus Voltage: [VALUE] Exceeded Limit of [LIMIT]*.
ADDITIONAL CAUSE/REMEDY = Verify phase to phase and phase to ground line voltage.

ICVC FAULT STATE = 166
PRIMARY MESSAGE = AUTORESTART PENDING
SECONDARY MESSAGE = HIGH DC BUS VOLTAGE
PRIMARY CAUSE = 166→High DC Bus Voltage: [VALUE] Exceeded Limit of [LIMIT]*.
ADDITIONAL CAUSE/REMEDY = Verify phase to phase and phase to ground line voltage. Monitor AC line for high transient voltage
conditions.

ICVC FAULT STATE = 167
PRIMARY MESSAGE = SYSTEM ALERT
SECONDARY MESSAGE = HIGH DISCHARGE TEMP
PRIMARY CAUSE = 167→Comp Discharge Temp [VALUE] exceeded limit of [LIMIT]*.
ADDITIONAL CAUSE/REMEDY = Check sensor resistance or voltage drop.
Check for proper wiring.
Check for excessive starts.
Check Comp Discharge Alert setting in SETUP1 screen.

ICVC FAULT STATE = 168
PRIMARY MESSAGE = SENSOR ALERT
SECONDARY MESSAGE = HUMIDITY SENSOR INPUT
PRIMARY CAUSE = 168→Sensor Fault: Check Humidity Sensor Input Sensor.
ADDITIONAL CAUSE/REMEDY = Check humidity sensor wiring on CCM connectors J3 and J5. CCM switch SW2-1 must be in “OFF” position.
Check Humidity Sensor Input in Controls Test.

*[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.

CHILLER PROTECTIVE LIMIT FAULTS

ICVC FAULT STATE = 200
PRIMARY MESSAGE = PROTECTIVE LIMIT
SECONDARY MESSAGE = RECTIFIER POWER FAULT
PRIMARY CAUSE = 200→Rectifier Power Fault: Check VFD Status
ADDITIONAL CAUSE/REMEDY = Malfunction within VFD Power Module. Call Carrier Service

ICVC FAULT STATE = 201
PRIMARY MESSAGE = PROTECTIVE LIMIT
SECONDARY MESSAGE = INVERTER POWER FAULT
PRIMARY CAUSE = 201→Inverter Power Fault: Check VFD Status.
ADDITIONAL CAUSE/REMEDY = Malfunction within VFD Power Module. Call Carrier Service.

ICVC FAULT STATE = 202
PRIMARY MESSAGE = PROTECTIVE LIMIT
SECONDARY MESSAGE = MOTOR AMPS NOT SENSED
PRIMARY CAUSE = 202→Motor Amps Not Sensed — Average Load Current [VALUE].
ADDITIONAL CAUSE/REMEDY = Check main circuit breaker for trip. Increase Current % Imbalance in VFD_CONF screen.

ICVC FAULT STATE = 203
PRIMARY MESSAGE = PROTECTIVE LIMIT
SECONDARY MESSAGE = MOTOR ACCELERATION FAULT
PRIMARY CAUSE = 203→Motor Acceleration Fault — Average Load Current [VALUE].
ADDITIONAL CAUSE/REMEDY =
Check that inlet guide vanes are fully closed at start-up.
Check Motor Rated Load Amps in VFD_CONF screen. Reduce unit pressure if possible

ICVC FAULT STATE = 204
PRIMARY MESSAGE = PROTECTIVE LIMIT
SECONDARY MESSAGE = VFD SHUTDOWN FAULT
PRIMARY CAUSE = 204→VFD Shutdown Fault: Check Inverter Power Unit.
ADDITIONAL CAUSE/REMEDY = VFD Circuit Board malfunction. Call Carrier Service.

ICVC FAULT STATE = 205
PRIMARY MESSAGE = PROTECTIVE LIMIT
SECONDARY MESSAGE = HIGH DC BUS VOLTAGE
PRIMARY CAUSE = 205→High DC Bus Voltage: [VALUE] exceeded limit of [LIMIT]*.
ADDITIONAL CAUSE/REMEDY =

ICVC FAULT STATE = 206
PRIMARY MESSAGE = PROTECTIVE LIMIT
SECONDARY MESSAGE = VFD FAULT
PRIMARY CAUSE = 206→VFD Fault Code: [VALUE]; Check VFD Fault Code List.
ADDITIONAL CAUSE/REMEDY = See VFD Fault Code description and corrective action.

ICVC FAULT STATE = 207
PRIMARY MESSAGE = PROTECTIVE LIMIT
SECONDARY MESSAGE = HIGH CONDENSER PRESSURE
PRIMARY CAUSE = 207→High Cond Pressure trip. [VALUE] exceeded Switch Trippoint.
ADDITIONAL CAUSE/REMEDY =
Check Compressor Discharge High Pressure switch wiring and accuracy.
Check for high condenser water temperatures, low water flow, fouled tubes.
Check for division plate/gasket bypass.
Check for noncondensables in refrigerant.

ICVC FAULT STATE = 208
PRIMARY MESSAGE = PROTECTIVE LIMIT
SECONDARY MESSAGE = EXCESSIVE MOTOR AMPS
PRIMARY CAUSE = 208→Percent Load Current [VALUE] exceeded limit of [LIMIT]*.
ADDITIONAL CAUSE/REMEDY =
Check Motor Rated Load Amps in VFD_CONF screen. Percent Load Current > 110%.
Check Motor Rated Load Amps setting.

ICVC FAULT STATE = 209
PRIMARY MESSAGE = PROTECTIVE LIMIT
SECONDARY MESSAGE = LINE CURRENT IMBALANCE
PRIMARY CAUSE = 209→Line Current Imbalance: Check VFD Fault History for Values.
ADDITIONAL CAUSE/REMEDY =
Check phase to phase and phase to ground power distribution bus voltage.
Check Line Current % Imbalance in VFD_CONF screen. Consult power company.

ICVC FAULT STATE = 210
PRIMARY MESSAGE = PROTECTIVE LIMIT
SECONDARY MESSAGE = LINE VOLTAGE DROPOUT
PRIMARY CAUSE = 210→Single Cycle Line Voltage Dropout.
ADDITIONAL CAUSE/REMEDY = Temporary loss of voltage. Disable Single Cycle Dropout in VFD_CONF screen

ICVC FAULT STATE = 211
PRIMARY MESSAGE = PROTECTIVE LIMIT
SECONDARY MESSAGE = HIGH LINE VOLTAGE
PRIMARY CAUSE = 211→High Percent Line Voltage [VALUE].
ADDITIONAL CAUSE/REMEDY = Check phase to phase and phase to ground distribution bus voltage. Consult power company.

ICVC FAULT STATE = 212
PRIMARY MESSAGE = PROTECTIVE LIMIT
SECONDARY MESSAGE = LOW LINE VOLTAGE
PRIMARY CAUSE = 212→Low Percent Line Voltage [VALUE].
ADDITIONAL CAUSE/REMEDY = Check phase to phase and phase to ground distribution bus voltage. Consult power company.

ICVC FAULT STATE = 213
PRIMARY MESSAGE = PROTECTIVE LIMIT
SECONDARY MESSAGE = VFD MODULE RESET
PRIMARY CAUSE = 213→VFD Module Power-On Reset When Running.
ADDITIONAL CAUSE/REMEDY = Temporary loss of VFD control voltage. Check VFD control power breaker, transformer and
fuses.

ICVC FAULT STATE = 214
PRIMARY MESSAGE = PROTECTIVE LIMIT
SECONDARY MESSAGE = POWER LOSS
PRIMARY CAUSE = 214→Control Power Loss When Running.
ADDITIONAL CAUSE/REMEDY =
Check phase to phase and phase to ground distribution bus voltage.
Check VFD fuses.
Check 24 vac power supply to ICVC.
Consult power company.

ICVC FAULT STATE = 215
PRIMARY MESSAGE = PROTECTIVE LIMIT
SECONDARY MESSAGE = LOW DC BUS VOLTAGE
PRIMARY CAUSE = 215→Low DC Bus Voltage: [VALUE] exceeded limit of [LIMIT]*.
ADDITIONAL CAUSE/REMEDY = Verify phase-to-phase and phase-to-ground line voltage. VFD Circuit Board malfunction. Call Carrier Service

ICVC FAULT STATE = 216
PRIMARY MESSAGE = PROTECTIVE LIMIT
SECONDARY MESSAGE = LINE VOLTAGE IMBALANCE
PRIMARY CAUSE = 216→Line Voltage Imbalance. Check VFD Fault History for Values.
ADDITIONAL CAUSE/REMEDY = Check phase-to-phase and phase-to-ground distribution bus voltage. Increase Line Voltage % Imbalance in VFD_CONF screen.

ICVC FAULT STATE = 217
PRIMARY MESSAGE = PROTECTIVE LIMIT
SECONDARY MESSAGE = MOTOR OVERLOAD TRIP
PRIMARY CAUSE = 217→Motor Overload Trip; Check VFD configurations
ADDITIONAL CAUSE/REMEDY = Any phase current > 106% Rated Load Amps.
Can result from significant load side current imbalance when running at full load.
Check entering condenser water temperature and water flow rate.
Check Motor Rated Load Amps in VFD_CONF screen.

ICVC FAULT STATE = 218
PRIMARY MESSAGE = PROTECTIVE LIMIT
SECONDARY MESSAGE = VFD RECTIFIER OVERTEMP
PRIMARY CAUSE = 218→VFD Rectifier Temp Exceeded: Check Cooling and VFD Config.
ADDITIONAL CAUSE/REMEDY = Check that VFD refrigerant isolation valves are open.
Check VFD refrigerant cooling solenoid and refrigerant strainer.
Check for proper VFD cooling fan operation and blockage.

ICVC FAULT STATE = 219
PRIMARY MESSAGE = PROTECTIVE LIMIT
SECONDARY MESSAGE = VFD INVERTER OVERTEMP
PRIMARY CAUSE = 219→VFD Inverter Temp Exceeded: Check Cooling and VFD Config.
ADDITIONAL CAUSE/REMEDY = Check that VFD refrigerant isolation valves are open.
Check VFD refrigerant cooling solenoid and refrigerant strainer.
Check for proper VFD cooling fan operation and blockage.

*[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.
NOTE: ICVC Alarms 212-226 are declared as a result of VFD Faults

ICVC FAULT STATE = 220
PRIMARY MESSAGE = PROTECTIVE LIMIT
SECONDARY MESSAGE = GROUND FAULT
PRIMARY CAUSE = 220→Ground Fault Trip; Check Motor and Current Sensors.
ADDITIONAL CAUSE/REMEDY = 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.

ICVC FAULT STATE = 221
PRIMARY MESSAGE = PROTECTIVE LIMIT
SECONDARY MESSAGE = UNUSED
PRIMARY CAUSE = 221→UNUSED
ADDITIONAL CAUSE/REMEDY =

ICVC FAULT STATE = 222
PRIMARY MESSAGE = PROTECTIVE LIMIT
SECONDARY MESSAGE = LINE FREQUENCY TRIP
PRIMARY CAUSE = 222→Line Frequency — [VALUE] exceeded limit of [LIMIT]; Check Power Supply.
ADDITIONAL CAUSE/REMEDY =  If operating from a generator, check generator size and speed.
Check utility power supply.

ICVC FAULT STATE = 223
PRIMARY MESSAGE = LOSS OF COMMUNICATION
SECONDARY MESSAGE = WITH VFD GATEWAY MODULE
PRIMARY CAUSE = 223→Loss of SIO Comm with VFD Gateway: Check VFG Module and Power
ADDITIONAL CAUSE/REMEDY = Check VFD communication wiring and connectors on VFD Gateway and DPI board.
Check for compatibility between ICVC and Gateway software.

ICVC FAULT STATE = 224
PRIMARY MESSAGE = PROTECTIVE LIMIT
SECONDARY MESSAGE = VFD COMMUNICATIONS FAULT
PRIMARY CAUSE = 224→Loss of DPI Comm with VFD Gateway: Check VFG to VFD Comm.
ADDITIONAL CAUSE/REMEDY = Check VFD communication wiring and connectors.
Check status lights on DPI Communications Interface Board. Call Carrier Service.

ICVC FAULT STATE = 225
PRIMARY MESSAGE = PROTECTIVE LIMIT
SECONDARY MESSAGE = MOTOR CURRENT IMBALANCE
PRIMARY CAUSE = 225→Motor Current Imbalance: Check VFD Fault History for Values
ADDITIONAL CAUSE/REMEDY = Check Motor Current % Imbalance in VFD_CONF screen.

ICVC FAULT STATE = 226
PRIMARY MESSAGE = PROTECTIVE LIMIT
SECONDARY MESSAGE = LINE PHASE REVERSAL
PRIMARY CAUSE = 226→Line Phase Reversal: Check Line Phases.
ADDITIONAL CAUSE/REMEDY = Reverse connections of any two line conductors to circuit breaker.

ICVC FAULT STATE = 227
PRIMARY MESSAGE = PROTECTIVE LIMIT
SECONDARY MESSAGE = OIL PRESS SENSOR FAULT
PRIMARY CAUSE = 227→Oil Pressure Delta P [VALUE] (Pump Off): Check Pump/Transducers.
ADDITIONAL CAUSE/REMEDY = Check transducer wiring and accuracy.
Check power supply to pump.
Check pump operation.
Check transducer calibration.

ICVC FAULT STATE = 228
PRIMARY MESSAGE = PROTECTIVE LIMIT
SECONDARY MESSAGE = LOW OIL PRESSURE
PRIMARY CAUSE = 228→Low Operating Oil Pressure [VALUE]: Check Oil Pump and Filter.
ADDITIONAL CAUSE/REMEDY = 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.

ICVC FAULT STATE = 229
PRIMARY MESSAGE = PROTECTIVE LIMIT
SECONDARY MESSAGE = LOW CHILLED WATER FLOW
PRIMARY CAUSE = 229→Low Chilled Water Flow; Check Switch/Delta P Config & Calibration.
ADDITIONAL CAUSE/REMEDY = 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.

ICVC FAULT STATE = 230
PRIMARY MESSAGE = PROTECTIVE LIMIT
SECONDARY MESSAGE = LOW CONDENSER WATER FLOW
PRIMARY CAUSE = 230→Low Condenser Water Flow; Check Switch/Delta P Config & Calibration
ADDITIONAL CAUSE/REMEDY = Perform pump control test.
Check optional transducer calibration and wiring.
Check condenser water valves.
Check for COND PRESS OVERRIDE + 5 psig.

ICVC FAULT STATE = 231
PRIMARY MESSAGE = PROTECTIVE LIMIT
SECONDARY MESSAGE = HIGH DISCHARGE TEMP
PRIMARY CAUSE = 231→Comp Discharge Temp [VALUE] Exceeded Limit of [LIMIT]*.
ADDITIONAL CAUSE/REMEDY = Check for closed compressor discharge isolation 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.

ICVC FAULT STATE = 232
PRIMARY MESSAGE = PROTECTIVE LIMIT
SECONDARY MESSAGE = LOW REFRIGERANT TEMP
PRIMARY CAUSE = 232→Evaporator Refrig Temp [VALUE] exceeded limit of [LIMIT]*.
ADDITIONAL CAUSE/REMEDY = 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 inadequate 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.

*[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. 

ICVC FAULT STATE = 233
PRIMARY MESSAGE = PROTECTIVE LIMIT
SECONDARY MESSAGE = HIGH MOTOR TEMPERATURE
PRIMARY CAUSE = 233→Comp Motor Winding Temp [VALUE] exceeded limit of [LIMIT]*. ADDITIONAL CAUSE/REMEDY = Check motor sensors wiring and accuracy. Check motor cooling line and spray nozzle for proper operation, or restrictions. Check for excessive starts within a short time span.

ICVC FAULT STATE = 234
PRIMARY MESSAGE = PROTECTIVE LIMIT
SECONDARY MESSAGE = HIGH BEARING TEMPERATURE
PRIMARY CAUSE = 234→Comp Thrust Brg Temp [VALUE] exceeded limit of [LIMIT]*. ADDITIONAL CAUSE/REMEDY = Check oil heater for proper operation. Check for low oil level, partially closed oil supply valves, or clogged oil filter. Check oil cooler refrigerant thermal expansion valves. Confirm that TXV (thermostatic expansion valve) bulb is secured in place and insulated. Check for sensor wiring and accuracy. This fault can result from extended operation at low load with low water flow to the evaporator or condenser.

ICVC FAULT STATE = 235
PRIMARY MESSAGE = PROTECTIVE LIMIT
SECONDARY MESSAGE = HIGH CONDENSER PRESSURE
PRIMARY CAUSE = 235→Condenser Pressure [VALUE] exceeded limit of [LIMIT]*.
ADDITIONAL CAUSE/REMEDY = Check for high condenser water temperatures, low water flow, fouled tubes.
Check for division plate/gasket bypass. Check for noncondensables. Check transducer wiring and accuracy.

 ICVC FAULT STATE = 236
PRIMARY MESSAGE = PROTECTIVE LIMIT
SECONDARY MESSAGE = COMPRESS SURGE/ LOW SPEED
PRIMARY CAUSE = 236→Compressor Surge: Check condenser water temp and flow.
ADDITIONAL CAUSE/REMEDY = Check for high condenser water temperatures, low water flow, fouled tubes. Check for division plate/gasket bypass. Check for noncondensables. Check surge prevention parameters in OPTIONS screen. Increase VFD Increase Step in SETUP2. Check VFD Minimum Speed in SETUP2 screen

ICVC FAULT STATE = 237
PRIMARY MESSAGE = PROTECTIVE LIMIT
SECONDARY MESSAGE = SPARE SAFETY DEVICE
PRIMARY CAUSE = 237→Spare Safety Device.
ADDITIONAL CAUSE/REMEDY = Spare safety input has tripped or factory installed jumper is not present on Terminal Block 1 terminals 19 and 20 in the VFD enclosure.

ICVC FAULT STATE = 238
PRIMARY MESSAGE = PROTECTIVE LIMIT
SECONDARY MESSAGE = EXCESSIVE COMPR SURGE
PRIMARY CAUSE = 238→Compressor Surge: Check condenser water temp and flow. ADDITIONAL CAUSE/REMEDY = Check for high condenser water temperatures, low water flow, fouled tubes. Check for division plate/gasket bypass. Check for noncondensables. Check surge prevention parameters in OPTIONS screen. Check cooling tower control settings and performance to design/selection temperatures across the entire operating range of the chiller. Check cooler approach and water flow.

ICVC FAULT STATE = 239
PRIMARY MESSAGE = PROTECTIVE LIMIT
SECONDARY MESSAGE = TRANSDUCER VOLTAGE FAULT
PRIMARY CAUSE = 239→Transducer Voltage Ref [VALUE] exceeded limit of [LIMIT]*. ADDITIONAL CAUSE/REMEDY = Check that CCM transducer voltage reference is between 4.5 v and 5.5 v. Check that pressure transducers are not shorted to ground. This fault is normally declared the first time an ICVC is powered up if it was downloaded with software when it was not connected to a CCM. Call Carrier Service.

ICVC FAULT STATE = 240
PRIMARY MESSAGE = PROTECTIVE LIMIT
SECONDARY MESSAGE = LOW DISCHARGE SUPERHEAT
PRIMARY CAUSE = 240→Check for Oil in Or Overcharge of Refrigerant ADDITIONAL CAUSE/REMEDY = Check for oil loss or excessive refrigerant. If oil level is low, refrigerant charge may be too low resulting in ineffective oil reclaim. Excessive refrigerant charge may cause liquid carryover into compressor. Check calibration of evaporator pressure and condenser pressure sensors. Check calibration of compressor discharge temperature sensor.

ICVC FAULT STATE = 241
PRIMARY MESSAGE = PROTECTIVE LIMIT
SECONDARY MESSAGE = RECTIFIER OVERCURRENT
PRIMARY CAUSE = 241→Rectifier Overcurrent Fault: Check VFD Status. ADDITIONAL CAUSE/REMEDY = Check for high water temperatures or changes in water flow rates.

ICVC FAULT STATE = 242
PRIMARY MESSAGE = LOSS OF COMMUNICATION
SECONDARY MESSAGE = WITH CCM MODULE
PRIMARY CAUSE = 242→Loss of Communication With CCM, Check Comm. Connectors. ADDITIONAL CAUSE/REMEDY = Check wiring and control power to CCM. Confirm that all CCM SW1 switches are in the “OFF” position.

ICVC FAULT STATE = 243
PRIMARY MESSAGE = POTENTIAL FREEZE-UP
SECONDARY MESSAGE = EVAP PRESS/TEMP TOO LOW
PRIMARY CAUSE = 243→Evaporator Refrig Temp [VALUE] exceeded limit of [LIMIT]*. ADDITIONAL CAUSE/REMEDY = Check for proper refrigerant charge. Check float valve operation. Check for proper fluid 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

ICVC FAULT STATE = 244
PRIMARY MESSAGE = POTENTIAL FREEZE-UP
SECONDARY MESSAGE = COND PRESS/TEMP TOO LOW
PRIMARY CAUSE = 244→Condenser Refrig Temp [VALUE] exceeded limit of [LIMIT]*. ADDITIONAL CAUSE/REMEDY = Condenser water too cold or chiller shut down with brine below 32 F in cooler so equalization temperature in chiller approached 32 F. Check condenser pressure transducer. Check refrigerant charge. *[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.

ICVC FAULT STATE = 245
PRIMARY MESSAGE = PROTECTIVE LIMIT
SECONDARY MESSAGE = HIGH VFD SPEED
PRIMARY CAUSE = 245→Actual VFD Speed exceeded limit of Target VFD Speed + 10%. ADDITIONAL CAUSE/REMEDY = Actual VFD Speed on COMPRESS screen must not exceed Target VFD Speed by more than 10%.

ICVC FAULT STATE = 246
PRIMARY MESSAGE = PROTECTIVE LIMIT
SECONDARY MESSAGE =INVALID DIFFUSER CONFIG
PRIMARY CAUSE = 246→Diffuser Control Invalid Configuration: Check SETUP2 Entries. ADDITIONAL CAUSE/REMEDY = Check 25%, 50%, and 75% Guide Vane and Diffuser Load Point entries in SETUP2 screen.

ICVC FAULT STATE = 247
PRIMARY MESSAGE = PROTECTIVE LIMIT
SECONDARY MESSAGE = DIFFUSER POSITION FAULT
PRIMARY CAUSE = 247→Diffuser Position Fault: Check Guide Vane/Diffuser Actuator. ADDITIONAL CAUSE/REMEDY = Confirm that Diffuser Option in SETUP 2 screen has not been Enabled if compressor does not have a split ring diffuser. May indicate rotating stall condition. Check rotating stall transducer wiring accuracy and sealing. Check diffuser schedule and guide vane schedule in SETUP2 screen. Check for proper operation of diffuser and inlet guide vane actuators including inlet guide vane calibration. Check diffuser actuator coupling for rotational slip. Check RC snubber on CCM J4-23 and J4-24. Check 4.3k ohm resistor between CCM terminals J3-7 and J3-8. Check for electrical noise in CCM Diffuser Pressure wiring. Do not continue to operate compressor except for diagnostic purposes.

 ICVC FAULT STATE = 248
PRIMARY MESSAGE = PROTECTIVE LIMIT
SECONDARY MESSAGE = SPARE TEMPERATURE #1
PRIMARY CAUSE = 248→Spare Temperature #1 [VALUE] exceeded limit of [LIMIT]*. ADDITIONAL CAUSE/REMEDY = Check Spare Temperature Enable and Spare Temperature Limit in SETUP1 Screen.

ICVC FAULT STATE = 249
PRIMARY MESSAGE = PROTECTIVE LIMIT
SECONDARY MESSAGE = SPARE TEMPERATURE #2
PRIMARY CAUSE = 249→Spare Temperature #2 [VALUE] exceeded limit of [LIMIT]*. ADDITIONAL CAUSE/REMEDY = Check Spare Temperature Enable and Spare Temperature Limit in SETUP1 Screen.

ICVC FAULT STATE = 250
PRIMARY MESSAGE = UNUSED
SECONDARY MESSAGE = UNUSED
PRIMARY CAUSE = 250→Unused State.
ADDITIONAL CAUSE/REMEDY =

ICVC FAULT STATE = 251
PRIMARY MESSAGE = PROTECTIVE LIMIT
SECONDARY MESSAGE = VFD CONFIG CONFLICT
PRIMARY CAUSE = 251→VFD Config Conflict (VFD Uploaded): Verify to Reset Alarm. ADDITIONAL CAUSE/REMEDY = The VFD_CONF table in the Gateway does not match that which is in the ICVC. This is a normal fault if an ICVC has been uploaded with software when it was not attached to the CCM. Enter VFD_CONF screen and then exit VFD_CONF screen by pressing EXIT then CANCEL. Re-enter the VFD_CONF screen, press EXIT then SAVE. Parameters stored in the Gateway will be uploaded into the ICVC. Confirm valid settings in VFD_CONF screen.

ICVC FAULT STATE = 252
PRIMARY MESSAGE = PROTECTIVE LIMIT
SECONDARY MESSAGE = VFD CONFIG CONFLICT
PRIMARY CAUSE = 252→VFD Config Conflict (VFD Downloaded): Verify to Reset Alarm. ADDITIONAL CAUSE/REMEDY = The VFD_CONF table in the Gateway does not match that which is in the ICVC.

ICVC FAULT STATE = 253
PRIMARY MESSAGE = PROTECTIVE LIMIT
SECONDARY MESSAGE = GUIDE VANE CALIBRATION
PRIMARY CAUSE = 253→Guide Vane Fault [VALUE]. Check Calibration.
ADDITIONAL CAUSE/REMEDY = Enter CONTROL TEST and execute Guide Vane Calibration. Check CCM guide vane feedback terminals J4-9 and J4-10. Check guide vane feedback potentiometer. Alarm before start indicates guide vane opening is not less than 4%. Alarm running indicates guide vane position is < -1% or > 103%, or feedback voltage is < .045 or > 3.15 VDC.

ICVC FAULT STATE = 254
PRIMARY MESSAGE = PROTECTIVE LIMIT
SECONDARY MESSAGE = VFD CHECKSUM ERROR
PRIMARY CAUSE = 254→Checksum Error: Press Reset to Restore Configuration. ADDITIONAL CAUSE/REMEDY = Actual VFD checksum does not match calculated value.

ICVC FAULT STATE = 255
PRIMARY MESSAGE = PROTECTIVE LIMIT
SECONDARY MESSAGE = VFD DEW PREVENTION
PRIMARY CAUSE = 255→Dew Prevention - Coolant Too Cold. Check Solenoid & Cond T. ADDITIONAL CAUSE/REMEDY = VFD COLDPLATE TEMP is too close to dew point based on VFD ENCLOSURE TEMP and RELATIVE HUMIDITY in POWER screen. Check for moisture in VFD enclosure. Check Humidity Sensor in CONTROLS TEST. Check for contamination on CCM J3-7 and J3-9 Humidity Sensor. Check that VFD refrigerant cooling modulating valve is closing.

ICVC FAULT STATE = 256
PRIMARY MESSAGE = PROTECTIVE LIMIT
SECONDARY MESSAGE = INDUCTOR OVERTEMP
PRIMARY CAUSE = 256→Inductor Overtemp Trip - Check Temp Switch and Cooling Fans. ADDITIONAL CAUSE/REMEDY = Check for cooling fan airflow obstructions.

ICVC FAULT STATE = 258
PRIMARY MESSAGE = UNUSED STATE
SECONDARY MESSAGE = UNUSED PRIMARY CAUSE = 258→Unused.
ADDITIONAL CAUSE/REMEDY = *[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.

ICVC FAULT STATE = 259
PRIMARY MESSAGE = PROTECTIVE LIMIT
SECONDARY MESSAGE = CCN OVERRIDE STOP
PRIMARY CAUSE = 259→CCN Emergency/ Override Stop.
ADDITIONAL CAUSE/REMEDY = CCN has signaled the chiller to stop.This fault must be manually reset from the default screen of the ICVC

ICVC FAULT STATE = 282
PRIMARY MESSAGE = PROTECTIVE LIMIT
SECONDARY MESSAGE = INVALID VFD CONFIG
PRIMARY CAUSE = 282→Line Frequency [VALUE] Exceeded Configuration Range.
ADDITIONAL CAUSE/REMEDY = LINE FREQUENCY in POWER screen must be maintained between 45-52 Hz if LINE FREQ=60Hz? is set to NO(50 Hz). LINE FREQUENCY must be maintained between 55-62 Hz if LINE FREQ=60Hz? is set to YES (60 Hz). Check high pressure switch and connections to TB4-24 and TB4-25.

ICVC FAULT STATE = 283
PRIMARY MESSAGE = PROTECTIVE LIMIT
SECONDARY MESSAGE = INVALID VFD CONFIG
PRIMARY CAUSE = 283→Compressor 100% Speed Config Ranges: 50 Hz= 45-52; 60 Hz=55-62. ADDITIONAL CAUSE/REMEDY = COMPRESSOR 100% SPEED in VFD_CONF screen must be set between 45-52 Hz if LINE FREQ=60Hz? is set to NO(50 Hz). COMPRESSOR 100% SPEED must be set between 55-62 Hz if LINE FREQ=60Hz? is set to YES (60 Hz).

ICVC FAULT STATE = 284
PRIMARY MESSAGE = VFD GATEWAY
SECONDARY MESSAGE = COMPATIBILITY CONFLICT
PRIMARY CAUSE = 284→VFD Gateway Compatibility Conflict: Check VFG/VFD Versions ADDITIONAL CAUSE/REMEDY = VFD Gateway and VFD software versions are not compatible. Call Carrier Service

ICVC FAULT STATE = 285
PRIMARY MESSAGE = VFD GATEWAY
SECONDARY MESSAGE = COMPATIBILITY CONFLICT
PRIMARY CAUSE = 285→VFD Gateway Compatibility Conflict: Check VFG/ICVC Versions. ADDITIONAL CAUSE/REMEDY = VFD Gateway and ICVC software versions are not compatible. Call Carrier Service.

ICVC FAULT STATE = 286
PRIMARY MESSAGE = PROTECTIVE LIMIT
SECONDARY MESSAGE = INVERTER OVERCURRENT
PRIMARY CAUSE = 286→Inverter Overcurrent Fault: Check VFD Status.
ADDITIONAL CAUSE/REMEDY = Check for high entering water temperature or low condenser water flow. Check current settings in VFD_CONF screen. *[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. OUT-OF-RANGE SENSOR

ICVC FAULT STATE = 260
PRIMARY MESSAGE = SENSOR FAULT
SECONDARY MESSAGE = LEAVING CHILLED WATER
PRIMARY CAUSE = 260→Sensor Fault: Check Leaving Chilled Water Sensor
ADDITIONAL CAUSE/REMEDY = Check sensor resistance or voltage drop. Check for proper wiring. Check for disconnected or shorted wiring

ICVC FAULT STATE = 261
PRIMARY MESSAGE = SENSOR FAULT
SECONDARY MESSAGE = ENTERING CHILLED WATER
PRIMARY CAUSE = 261→Sensor Fault: Check Entering Chilled Water Sensor.
ADDITIONAL CAUSE/REMEDY = Check sensor resistance or voltage drop. Check for proper wiring. Check for disconnected or shorted wiring.

ICVC FAULT STATE = 262
PRIMARY MESSAGE = SENSOR FAULT
SECONDARY MESSAGE = CONDENSER PRESSURE
PRIMARY CAUSE = 262→Sensor Fault: Check Condenser Pressure Sensor.
ADDITIONAL CAUSE/REMEDY = Check sensor wiring. Check for disconnected or shorted wiring. Check for condensation in transducer connector.

ICVC FAULT STATE = 263
PRIMARY MESSAGE = SENSOR FAULT
SECONDARY MESSAGE = EVAPORATOR PRESSURE PRIMARY CAUSE = 263→Sensor Fault: Check Evaporator Pressure Sensor.
ADDITIONAL CAUSE/REMEDY = Check sensor wiring. Check for disconnected or shorted wiring. Check for condensation in transducer connector.

ICVC FAULT STATE = 264
PRIMARY MESSAGE = SENSOR FAULT
SECONDARY MESSAGE = COMPRESSOR BEARING TEMP
PRIMARY CAUSE = 264→Sensor Fault: Check Comp Thrust Brg Temp Sensor.
ADDITIONAL CAUSE/REMEDY = Check sensor resistance or voltage drop. Check for proper wiring. Check for disconnected or shorted wiring.

ICVC FAULT STATE = 265
PRIMARY MESSAGE = SENSOR FAULT
SECONDARY MESSAGE = COMPRESSOR MOTOR TEMP
PRIMARY CAUSE = 265→Sensor Fault: Check Comp Motor Winding Temp Sensor.
ADDITIONAL CAUSE/REMEDY = Check sensor resistance or voltage drop. Check for proper wiring. Check for disconnected or shorted wiring.

ICVC FAULT STATE = 266
PRIMARY MESSAGE = SENSOR FAULT
SECONDARY MESSAGE = COMP DISCHARGE TEMP
PRIMARY CAUSE = 266→Sensor Fault: Check Comp Discharge Temp Sensor
ADDITIONAL CAUSE/REMEDY = Check sensor resistance or voltage drop. Check for proper wiring. Check for disconnected or shorted wiring

ICVC FAULT STATE = 267
PRIMARY MESSAGE = SENSOR FAULT
SECONDARY MESSAGE = OIL SUMP TEMP
PRIMARY CAUSE = 267→Sensor Fault: Check Oil Sump Temp Sensor.
ADDITIONAL CAUSE/REMEDY = Check sensor resistance or voltage drop. Check for proper wiring. Check for disconnected or shorted wiring.

ICVC FAULT STATE = 268
PRIMARY MESSAGE = SENSOR FAULT
SECONDARY MESSAGE = COMP OIL PRESS DIFF
PRIMARY CAUSE = 268→Sensor Fault: Check Oil Pump Delta P Sensor.
ADDITIONAL CAUSE/REMEDY = Check sensor resistance or voltage drop. Check for proper wiring. Check for disconnected or shorted wiring.

ICVC FAULT STATE = 269
PRIMARY MESSAGE = SENSOR FAULT
SECONDARY MESSAGE = CHILLED WATER FLOW
PRIMARY CAUSE = 269→Sensor Fault: Check Chilled Water Delta P Sensor
ADDITIONAL CAUSE/REMEDY =Check sensor wiring and accuracy. Check for disconnected or shorted wiring. If pressure transducers are not installed, check for presence of resistors and jumpers on lower CCM terminal block J3.

ICVC FAULT STATE = 270
PRIMARY MESSAGE = SENSOR FAULT
SECONDARY MESSAGE = COND WATER FLOW
PRIMARY CAUSE = 270→Sensor Fault: Check Cond Water Delta P Sensor
ADDITIONAL CAUSE/REMEDY = Check sensor wiring and accuracy. Check for disconnected or shorted wiring. If pressure transducers are not installed, check for presence of resistors and jumpers on lower CCM terminal block J3.

ICVC FAULT STATE = 271
PRIMARY MESSAGE = SENSOR FAULT
SECONDARY MESSAGE = EVAP SATURATION TEMP
PRIMARY CAUSE = 271→Sensor Fault: Check Evap Saturation Temp Sensor.
ADDITIONAL CAUSE/REMEDY = Check sensor resistance or voltage drop. Check for proper wiring. Check for disconnected or shorted wiring.

Eaton LCX9000 Fault Code Descriptions and Corrective Actions 

VFD FAULT CODE ON VFD HIST SCREEN = 1
ICVC FAULT STATE = 212 (146)
FAULT TYPE = Overcurrent
DESCRIPTION = Drive has detected too high a current in the motor cable:
• sudden heavy load increase
• short circuit in the motor cables
• unsuitable motor
SOLUTION = Check loading. Check motor. Check cables.
CORRECTIVE ACTION = See ICVC Fault State 219, 220

VFD FAULT CODE ON VFD HIST SCREEN = 2
ICVC FAULT STATE = 205 (166)
FAULT TYPE = Overvoltage
DESCRIPTION = The DC-link voltage has exceeded the defined limits.
See Eaton User Manual for LCX9000 VFD.
• too short a deceleration time
• high overvoltage spikes in supply
SOLUTION = Set the deceleration time longer.
Add a brake chopper or brake resistor.
CORRECTIVE ACTION = Monitor the AC line for high line voltage or transient conditions. Bus overvoltage can also be caused by motor regeneration.
Extend the decel time or install dynamic brake option

VFD FAULT CODE ON VFD HIST SCREEN = 3
ICVC FAULT STATE = 220
FAULT TYPE = Ground Fault*
DESCRIPTION = Current measurement has detected that the sum of motor phase currents is not zero.
• insulation failure in cables or motor
SOLUTION = Check motor cables and motor
CORRECTIVE ACTION = Check the motor and external wiring to the drive output terminals for a grounded condition.

VFD FAULT CODE ON VFD HIST SCREEN = 5
ICVC FAULT STATE = 206
FAULT TYPE = Charging Switch
DESCRIPTION = The charging switch is open, when the START command has been given.
• faulty operation
• component failure
SOLUTION = Reset the fault and restart. Should the fault re-occur, contact Eaton.
CORRECTIVE ACTION =

VFD FAULT CODE ON VFD HIST SCREEN = 6
ICVC FAULT STATE = 206
FAULT TYPE = Emergency stop
DESCRIPTION = Stop signal has been given from the option board.
SOLUTION =
CORRECTIVE ACTION = Check option board.

VFD FAULT CODE ON VFD HIST SCREEN = 7
ICVC FAULT STATE = 206
FAULT TYPE = Saturation trip
DESCRIPTION = Various causes:
• component failure
• brake resistor short circuit or overload
SOLUTION = Cannot be reset from the keypad. Switch off power.
If this fault appears simultaneously with Fault 1, check motor cables and motor.
CORRECTIVE ACTION = DO NOT RE-CONNECT POWER! Contact Eaton

VFD FAULT CODE ON VFD HIST SCREEN = 8
ICVC FAULT STATE = 206
FAULT TYPE = System fault
DESCRIPTION =
• component failure
• faulty operation
Note: exceptional fault data record, see Eaton User Manual for LCX9000 VFD.
SOLUTION = Reset the fault and restart.
CORRECTIVE ACTION = Should the fault reoccur, contact Eaton.

VFD FAULT CODE ON VFD HIST SCREEN = 9
ICVC FAULT STATE = 215 (165)
FAULT TYPE = Undervoltage*
DESCRIPTION = DC-link voltage is under the defined voltage limits. See Eaton User Manual for LCX9000 VFD.
• most probable cause: too low a supply voltage
• drive internal fault
SOLUTION = In case of temporary supply voltage break, reset the fault and restart the drive. Check the supply voltage. If it is adequate,
an internal failure has occurred. Contact Eaton.
CORRECTIVE ACTION = Monitor the incoming AC line for low voltage or line power interruption. If voltage is adequate an internal failure has
occurred.

VFD FAULT CODE ON VFD HIST SCREEN = 10
ICVC FAULT STATE = 210 (144)
FAULT TYPE = Single Cycle dropout or Line Current imbalance
DESCRIPTION = Input line phase is missing.
SOLUTION = Check supply voltage and cable.
CORRECTIVE ACTION = Disable Single Cycle Dropout in VFD_CONF. Check phase-to-phase and phase-to-ground power distribution bus voltage. Check Line Current % imbalance in VFD_CONF screen. Consult power company.

VFD FAULT CODE ON VFD HIST SCREEN = 11
ICVC FAULT STATE = 225 (143)
FAULT TYPE = Output phase supervision
DESCRIPTION = Current measurement has detected that there is no current in one motor phase.
SOLUTION = Check motor cable and motor.
CORRECTIVE ACTION = Check motor cable and motor. Check motor current % Imbalance in VFD_CONF screen.

VFD FAULT CODE ON VFD HIST SCREEN = 12
ICVC FAULT STATE = 206
FAULT TYPE = Brake chopper supervision
DESCRIPTION = • no brake resistor installed
• brake resistor is broken
• brake chopper failure
SOLUTION = Check brake resistor.
CORRECTIVE ACTION = If the resistor is okay, the chopper is faulty. Contact Eaton.

VFD FAULT CODE ON VFD HIST SCREEN = 13
ICVC FAULT STATE = 206
FAULT TYPE = Drive undertemperature
DESCRIPTION = Heatsink temperature is under 14°F (-10°C)
SOLUTION =
CORRECTIVE ACTION =

VFD FAULT CODE ON VFD HIST SCREEN = 14
ICVC FAULT STATE = 219
FAULT TYPE = Drive overtemperature
DESCRIPTION = • Heatsink temperature is over 158°F (70°C). Overtemperature warning is issued when the heatsink temperature exceeds 149°F (65°C).
• Circuit board temperature is over 185°F (85°C). Overtemperature warning is issued when the board temperature exceeds 158°F (70°C).
SOLUTION = Check the coolant flow and temperature.
CORRECTIVE ACTION = Check the ambient temperature. Make sure that the switching frequency is not too high in relation to ambient temperature and motor load.
Circulation of air in the drive is blocked.
The cooling fans are defective.

* Programmable fault.
† Alarm fault. This type of fault is a sign of unusual operating condition. It does not caue the drive to stop, nor does it require any special actions. The alarm fault remains in the display for ~30 seconds.
NOTES:
1. ICVC fault in ( ) indicates fault shown when Auto-restart is enabled.
2. When the ICVC Fault State is 206 the fault code must be read from the drive keypad or with the 9000X software tool.

VFD FAULT CODE ON VFD HIST SCREEN = 15
ICVC FAULT STATE = 206
FAULT TYPE = Motor stalled*
DESCRIPTION = Motor stall protection has tripped.
SOLUTION = Check motor.
CORRECTIVE ACTION = Check VFD_HIST.

VFD FAULT CODE ON VFD HIST SCREEN = 16
ICVC FAULT STATE = 217
FAULT TYPE = Motor overload trip
DESCRIPTION = Motor is overloaded
SOLUTION = Decrease the motor load.
If no motor overload exists, check the temperature model parameters.
CORRECTIVE ACTION = Decrease the motor load. If no motor overload exists, check the temperature model parameters.

VFD FAULT CODE ON VFD HIST SCREEN = 17
ICVC FAULT STATE = 202
FAULT TYPE = Motor Amps not sensed
DESCRIPTION = Motor underload protection has tripped.
SOLUTION =
CORRECTIVE ACTION = Check main Circuit breaker for trip.
Increase Current % imbalance in VFD CONF screen.

VFD FAULT CODE ON VFD HIST SCREEN = 22
ICVC FAULT STATE = 206
FAULT TYPE = EEPROM checksum fault†
DESCRIPTION = Parameter save fault
• faulty operation
• component failure
SOLUTION = Attempt to reset.
CORRECTIVE ACTION =

VFD FAULT CODE ON VFD HIST SCREEN = 24
ICVC FAULT STATE = 206
FAULT TYPE = Counter fault
DESCRIPTION = Values displayed on counters are incorrect
SOLUTION = Check value of counters.
CORRECTIVE ACTION =

VFD FAULT CODE ON VFD HIST SCREEN = 25
ICVC FAULT STATE = 206
FAULT TYPE = Microprocessor watchdog fault
DESCRIPTION = • faulty operation
• component failure
SOLUTION = Reset the fault and restart. Should the fault re-occur, contact Eaton.
CORRECTIVE ACTION = Reset the fault and restart. Should the fault re-occur, contact Eaton.

VFD FAULT CODE ON VFD HIST SCREEN = 26
ICVC FAULT STATE = 206
FAULT TYPE = Start-up prevented
DESCRIPTION = Start-up of the drive has been prevented.
SOLUTION = Cancel prevention of start-up.
CORRECTIVE ACTION =

VFD FAULT CODE ON VFD HIST SCREEN = 29
ICVC FAULT STATE = 206
FAULT TYPE = Thermistor fault*
DESCRIPTION = The thermistor input of option board has detected increase of the motor temperature
SOLUTION = Check motor cooling and loading Check thermistor connection.
CORRECTIVE ACTION = If thermistor input of the option board is not in use, it must be short circuited.

VFD FAULT CODE ON VFD HIST SCREEN = 31
ICVC FAULT STATE = 206
FAULT TYPE = IGBT temperature
DESCRIPTION = IGBT Inverter Bridge overtemperature protection has detected too high a short term overload current. This is a measured value
SOLUTION = Check loading. Check motor size.
CORRECTIVE ACTION = Check VFD_CONF parameters

VFD FAULT CODE ON VFD HIST SCREEN = 36
ICVC FAULT STATE = 206
FAULT TYPE = Control unit
DESCRIPTION = Control Unit can not control Power Unit and vice versa.
SOLUTION = Change control unit.
CORRECTIVE ACTION = See Eaton manual for location of control unit.

VFD FAULT CODE ON VFD HIST SCREEN = 37
ICVC FAULT STATE = 206
FAULT TYPE = Device change (same type)†
DESCRIPTION = • option board or control unit changed.
• same type of board or same power rating of drive
SOLUTION = Reset
Note: No fault time data record!
CORRECTIVE ACTION = Press ICVC reset key.

VFD FAULT CODE ON VFD HIST SCREEN = 38
ICVC FAULT STATE = 206
FAULT TYPE = Device added (same type)†
DESCRIPTION = • option board or drive added.
• drive of same power rating or same type of board added
SOLUTION = Reset
Note: No fault time data record!
CORRECTIVE ACTION =

VFD FAULT CODE ON VFD HIST SCREEN = 39
ICVC FAULT STATE = 206
FAULT TYPE = Device removed†
DESCRIPTION = • option board removed
• drive removed
SOLUTION = Reset
Note: No fault time data record!
CORRECTIVE ACTION = Check option board.

VFD FAULT CODE ON VFD HIST SCREEN = 40
ICVC FAULT STATE = 206
FAULT TYPE = Device unknown
DESCRIPTION = Unknown option board or drive.
SOLUTION = Contact Eaton.
CORRECTIVE ACTION = Check option board.

VFD FAULT CODE ON VFD HIST SCREEN = 41
ICVC FAULT STATE = 206
FAULT TYPE = IGBT temperature
DESCRIPTION = IGBT Inverter Bridge overtemperature protection has detected too high a short term overload current. This is a calculated value.
SOLUTION = Check loading. Check motor size.
CORRECTIVE ACTION = Check VFD_CONF parameters.

VFD FAULT CODE ON VFD HIST SCREEN = 42
ICVC FAULT STATE = 206
FAULT TYPE = Brake resistor overtemperature*
DESCRIPTION = Brake resistor overtemperature protection has detected too heavy braking
SOLUTION = Set the deceleration time longer. Use external brake resistor
CORRECTIVE ACTION = Check VFD_CONF parameters.

* Programmable fault.
† Alarm fault. This type of fault is a sign of unusual operating condition.
It does not caue the drive to stop, nor does it require any special actions. The alarm fault remains in the display for ~30 seconds.
NOTES:
1. ICVC fault in ( ) indicates fault shown when Auto-restart is enabled.
2. When the ICVC Fault State is 206 the fault code must be read from the drive keypad or with the 9000X software tool.

VFD FAULT CODE ON VFD HIST SCREEN = 43
ICVC FAULT STATE = 206
FAULT TYPE = Encoder fault
DESCRIPTION = Note: the exceptional fault data record, see Eaton User Manual for LCX9000 VFD. Additional codes:
1 = Encoder 1 channel A is missing
2 = Encoder 1 channel B is missing
3 = Both encoder 1 channels are missing
4 = Encoder reversed
SOLUTION = Check encoder channel connections.
CORRECTIVE ACTION = Check the encoder board.

VFD FAULT CODE ON VFD HIST SCREEN = 44
ICVC FAULT STATE = 206
FAULT TYPE = Device changed (different type)†
DESCRIPTION = • option board or control unit changed
• option board of different type or different power rating of drive
SOLUTION = Reset.
Note: No Fault Time Data Record is made.
CORRECTIVE ACTION = Press ICVC reset key.
Note: Application parameter values restored to default.

VFD FAULT CODE ON VFD HIST SCREEN = 45
ICVC FAULT STATE = 206
FAULT TYPE = Device added (different type)†
DESCRIPTION = • option board or device added
• option board of different type or drive of different power rating added
SOLUTION = Reset.
Note: No Fault Time Data Record is made.
CORRECTIVE ACTION = Press ICVC reset key.
Note: Application parameter values restored to default.

VFD FAULT CODE ON VFD HIST SCREEN = 50
ICVC FAULT STATE = 206
FAULT TYPE = Analog input sel. signal range 4 to 20 mA)*
DESCRIPTION = Current at the analog input is <4 mA.
• control cable is broken or loose
• signal source has failed.
SOLUTION = Check the current loop and signal source.
CORRECTIVE ACTION = Check wiring to terminal.

VFD FAULT CODE ON VFD HIST SCREEN = 51
ICVC FAULT STATE = 207
FAULT TYPE = External fault
DESCRIPTION = Digital input failed.
SOLUTION = Check source of trigger.
CORRECTIVE ACTION = Check I/O board.

VFD FAULT CODE ON VFD HIST SCREEN = 52
ICVC FAULT STATE = 206
FAULT TYPE = Keypad communication fault
DESCRIPTION = There is no connection between the control keypad and the drive.
SOLUTION = Check the keypad connection and keypad cable.
CORRECTIVE ACTION = Check for bent connector pins.

VFD FAULT CODE ON VFD HIST SCREEN = 53
ICVC FAULT STATE = 206
FAULT TYPE = Comm Fault
DESCRIPTION = The data connection between the fieldbus master and the fieldbus board is broken.
SOLUTION = Check installation
CORRECTIVE ACTION = If installation is correct contact Eaton.

VFD FAULT CODE ON VFD HIST SCREEN = 54
ICVC FAULT STATE = 206
FAULT TYPE = Slot fault
DESCRIPTION = Defective option board or slot.
SOLUTION = Check that the board is properly installed and seated in slot.
CORRECTIVE ACTION = If the installation is correct, contact Eaton.

VFD FAULT CODE ON VFD HIST SCREEN = 56
ICVC FAULT STATE = 206
FAULT TYPE = PT100 board temperature fault
DESCRIPTION = Temperature limit values set for the PT100 board parameters have been exceeded
SOLUTION = Determine the cause of the high temperature
CORRECTIVE ACTION =

* Programmable fault.
† Alarm fault. This type of fault is a sign of unusual operating condition. It does not caue the drive to stop, nor does it require any special actions. The alarm fault remains in the display for ~30 seconds.
NOTES:
1. ICVC fault in ( ) indicates fault shown when Auto-restart is enabled.
2. When the ICVC Fault State is 206 the fault code must be read from the drive keypad or with the 9000X software tool.

Start-Up and Service Instructions Please Download Here
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Monday, June 25, 2012

CHIGO Fault Code

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FAULT CODE FOR SPLIT-WALL MOUNTED TYPE ROOM AIR CONDITIONER

LED
code = DF
explain = display at on state
LAMP DISPLAY
code = flicker 1/1 SEC
explain =
FAILURE = defrost indication
The reason of fault and solution = Normal, the defrost state is removed, it will return to normal condition automatically

LED
code = DF
explain = display at off state
LAMP DISPLAY
code = flicker 1/3 SEC
explain =
FAILURE = anti cold wind
The reason of fault and solution = 1.Normal (during heating mode )
2.It will be removed when the coil pipe temperature sensor reaches certain temperature.

LED
code = E2
explain = display at off state
LAMP DISPLAY
code = flicker 1/1 SEC
explain = display at on/off state
FAILURE = room temp. sensor fault
The reason of fault and solution = 1.Check whether the resistance of the sensor is normal (the resistance is 5KΩ in the normal temperature 25°), when it is abnormal the sensor should be replaced.
2.Check whether there is short circuit or open circuit in the wire of the sensor, and whether the plug is connected well, whether there is welding off or rosin joint on the electric control board, if there is any, it should be repaired.
3.When the 1 and 2 are both normal, then the components or integrated circuit is damaged, the electric control board should be replaced.

LED
code = E3
explain = display at off state
LAMP DISPLAY
code = flicker 3/5 SEC
explain = display at on/off state
FAILURE = coil temp. sensor fault
The reason of fault and solution = 1 .Check whether the resistance of the sensor is normal (the resistance is 5KΩ in the normal temperature 25°), when it is abnormal the sensor should be replaced.
2 .Check whether there is short circuit or open circuit in the wire of the sensor, and whether the plug is connected well,
whether there is welding off or rosin joint on the electric control board, if there is any, it should be repaired.
3.When the 1 and 2 are both normal, then the components or integrated circuit is damaged, the electric control board should be replaced.

LED
code = E4
explain = display at off state
LAMP DISPLAY
code = flicker 4/6 SEC
explain = display at off state
FAILURE = outdoor unit abnormal
The reason of fault and solution = 1.Check whether the winding resistance and operation current of the compressor are normal.
2.Check whether the high and low pressure is normal when the unit is running.
3 .Check (whether the coil pipe sensor is normal) whether the contact of the
inserter on the circuit board is well, the coil pipe temperature sensor is fixed, the evaporation of the indoor unit is well, the key is to check the evaporator temperature detected by the coil pipe temperature sensor has reached the cooling or heating temperature.
4 .Check whether the surface of the condenser is too dirty, it should be cleaned when it is too dirty.
5 .Check whether the capacitance of the outdoor motor and the fan is damaged, it should be replaced when it is damaged.
6 .If the above items are normal, the electric control board should be replaced.

LED
code = E5
explain = PG motor display at off state
LAMP DISPLAY
code = flicker 5/7 SEC
explain = display at off state
FAILURE = no feedback signal of indoor fan
The reason of fault and solution = 1.Check whether two sets of plugs on the outlet end of the motor have loosed from the socket of the electric control board, insert it firmly when loosing.
2.Check whether the indoor motor has damaged, the motor should be replaced when it is damaged
3.Check whether the controllable silicon and other components on the electric control board have damaged, replace the controllable silicon or electric control board when they are damaged.

LED
code = E6
explain = PG motor display at off state
LAMP DISPLAY
code = flicker 6/8 SEC
explain = display at off state
FAILURE = no over zero signal
The reason of fault and solution = 1. Firstly check whether the indoor fan is normal.
2. Check whether the signal outputting from the integrated chip of the electric control board is normal, the electric control board should be replaced when the signal is abnormal.

LED
code = E7
explain = display at off state
LAMP DISPLAY
code = flicker 7/9 SEC
explain = display at off state
FAILURE = outdoor feedback fault
The reason of fault and solution = 1.Check whether the winding resistance and operation current of the compressor are normal
2.Check whether the high and low pressure is normal when the unit is running.
3.Check whether the indoor and outdoor wiring is right; when it is wrong, connect them again according to the circuit diagram
4.Check whether the contact of the inserter on the circuit board and the connection are well, otherwise repair.
5.Check whether the signal feedback wire is disconnected, replace or connect the feedback signal wire.
6.Check whether the supply power is phase-lacking or phase opposition.
7.Check whether the AC electromagnetic contactor is well.

LED
code = E8
explain = display at off state
LAMP DISPLAY
code = flicker 8/10 SEC
explain = display at off state
FAILURE = frost protection/over heat protection
The reason of fault and solution = 1 .Check whether the filter of the indoor unit is dirty or blocked, and clean if it is dirty.
2.Check whether the indoor fan is running normally, and replace the motor if it is abnormal.
3.Check whether indoor pipe temperature sensor is normal, and replace the sensor if it is abnormal.
4 .Check whether the system pressure is normal, if abnormal, should check whether there is leakage, and fill the refrigerant again.

CHIGO DC Inverter Split Air-Condition Unit Fault Code

The indoor unit faulty display

Faulty contents = Faulty contents
Trouble Display = The running lamp lightens all the time,the turbo lamp lightens 2 times ,and then extinguish 2 seconds.

Faulty contents = Indoor fan fault
Trouble Display = The running lamp lightens all the time, the turbo lamp lightens 5 times, and then extinguish 2 seconds.

Faulty contents = Indoor temp. sensor fault
Trouble Display = The running lamp lightens all the time,the turbo lamp lightens 3 times, and then extinguish 2 seconds.

Faulty contents = Indoor coil outlet temp. sensor fault
Trouble Display = The running lamp lightens all the time, the turbo lamp lightens 4 times, and then extinguish 2 seconds.

Faulty contents = Indoor coil inlet temp. sensor fault
Trouble Display = The running lamp lightens all the time, the turbo lamp lightens 4 times, and then extinguish 2 seconds.

Faulty contents = Indoor coil middle temp. sensor fault
Trouble Display = The running lamp lightens all the time, the turbo lamp lightens 4 times, and then extinguish 2 seconds.

Faulty contents = Mode conflict
Trouble Display = The running lamp lightens 1 time, and then extinguish 1 second.

Faulty contents = Defrosting or anti cold air
Trouble Display = The timing lamp lightens 1 time ,and then extinguish 1 second.

The outdoor unit faulty display

Faulty contents = the outdoor unit transducer module protection faulty
Trouble Display = The timing lamp lightens all the time, the turbo lamp lightens 2 times, and then extinguish 2 seconds.

Faulty contents = over current of outdoor unit
Trouble Display = The timing lamp lightens all the time, the turbo lamp lightens 3 times, and then extinguish 2 seconds.

Faulty contents = discharge temp. of compressor too high, outside ambient temp. too high, switch temp. of compressor crust cut off, temp. of module too high
Trouble Display = The timing lamp lightens all the time, the turbo lamp lightens 4 times, and then extinguish 2 seconds.

Faulty contents = The outdoor unit DC busbar voltage is abnormal
Trouble Display = The timing lamp lightens all the time, the turbo lamp lightens 7 times, and then extinguish 2 seconds.

Faulty contents = lack refrigerant or reverse valve fault
Trouble Display = The timing lamp lightens all the time, the turbo lamp lightens 8 times, and then extinguish 2 seconds.

Faulty contents = outdoor sensor fault
Trouble Display = The running lamp lightens all the time, the turbo lamp lightens 7 times, and then extinguish 2 seconds.

Faulty contents = outdoor unit drive fault, start compressor failure
Trouble Display = The running lamp lightens all the time, the turbo lamp lightens 6 times, and then extinguish 2 seconds.


Faulty contents = Communication fault
Trouble Display = The timing lamp lightens all the time, the sleeping lamp lightens 2 times, and then extinguish 2 seconds

Faulty contents = Indoor fan fault
Trouble Display = The timing lamp lightens all the time, the sleeping lamp lightens 5 times , and then extinguish 2 seconds

Faulty contents = Indoor temp. sensor fault
Trouble Display = The timing lamp lightens all the time, the sleeping lamp lightens 3 times , and then extinguish 2 seconds

Faulty contents = Indoor coil outlet temp. sensor fault
Trouble Display = The timing lamp lightens all the time, the sleeping lamp lightens 4 times , and then extinguish 2 seconds

Faulty contents = Indoor coil inlet temp. sensor fault
Trouble Display = The timing lamp lightens all the time, the sleeping lamp lightens 4 times ,and then extinguish 2 seconds

Faulty contents = Indoor coil middle temp. sensor fault
Trouble Display = The timing lamp lightens all the time, the sleeping lamp lightens 4 times , and then extinguish 2 seconds

Faulty contents = Mode conflict
Trouble Display = The timing lamp lightens 1 time, and then extinguish 1 second.

Faulty contents = Defrosting or anti cold air
Trouble Display = The running lamp lightens 1 time, and then extinguish 1 second

Faulty contents = the outdoor unit transducer module protection faulty
Trouble Display = The running lamp lightens all the time, the sleeping lamp lightens 2 times, and then extinguish 2 seconds

Faulty contents = over current of outdoor unit
Trouble Display = The running lamp lightens all the time, the sleeping lamp lightens 3 times , and then extinguish 2 seconds

Faulty contents = discharge temp. of compressor too high, outside ambient temp. too high, switch temp. of compressor crust cut off, temp. of module too high
Trouble Display = The running lamp lightens all the time, the sleeping lamp lightens 4 times, and then extinguish 2 seconds

Faulty contents = The outdoor unit DC busbar voltage is abnormal
Trouble Display = The running lamp lightens all the time, the sleeping lamp lightens 7 times, and then extinguish 2 seconds

Faulty contents = lack refrigerant or reverse valve fault
Trouble Display = The running lamp lightens all the time, the sleeping lamp lightens 8 times, and then extinguish 2 seconds

Faulty contents = outdoor sensor fault
Trouble Display = The timing lamp lightens all the time, the sleeping lamp lightens 7 times, and then extinguish 2 seconds

Faulty contents = outdoor unit drive fault, start compressor failure
Trouble Display = The timing lamp lightens all the time, the sleeping lamp lightens 6 times, and then extinguish 2 seconds

The malfunction oindoor and outdoor unit
The common malfunction code analysis and solutions


The fault code = F1
The fault content = The communication fault
The reason of fault and its solutions = 1.The communication wire is broken off. Please check whether the wire is disentwined ;
2.Please check whether the electrical control board is damaged. It should be replaced when it is damaged;
3.Please check whether the power ground wire is reliable;
4.Please check whether the unit is abnormal caused by the external interference. If it is, then find the interfering sources, and remove them.

The fault code = F2
The fault content = The indoor temperature sensor fault
The reason of fault and its solutions = 1.Check whether the resistance of sensor is normal, otherwise replace it;
2.Check whether the sensor wire is short circuit or open circuit, and whether the plug is well contacted, whether there is welding off or rosin joint on the electric control board, repair it if there is any above;
3.When the 1 and 2 are both normal, then the component or integrated circuit is damaged, the electric control board should be replaced.

The fault code = F3
The fault content = The indoor coil temperature sensor fault
The reason of fault and its solutions = 1. Check whether the resistance of sensor is normal, otherwise replace it;
2. Check whether the sensor wire is short circuit or open circuit, and whether the plug is well contacted, whether there is welding off or rosin joint on the electric control board ,repair it if there is any above;
3. When the 1 and 2 are both normal, then the component or integrated circuit is damaged, the electric control board should be replaced.

The fault code = F4
The fault content = Indoor PG motor fault (tap motor hasn’t so breakdown )
The reason of fault and its solutions = 1.Check whether the contact of the plug of the motor wire and socket is well. Please make sure it is well contacted;
2.Check whether the indoor motor has damaged, the motor should be replaced when it is damaged;
3 .Check whether the controllable silicon and other components on the electric control board have damaged,
replace the controllable silicon or electric control board when they are damaged;
4.Check whether the indoor fan is unobstructed when running, please fix the indoor fan again when it is obstructed.

The fault code = F5
The fault content = IPM protection
The reason of fault and its solutions = 1.Check whether the supply voltage is out of ranging from 150 to 270V(overvoltage and undervoltage protection); Measuring the actual current, if the current is greater than
the rated current of 2A,it is over-temperature protection; If the above are normal, that is IPM module internal circuit fault protection, so please replace the IPM module.

The fault code = F6
The fault content = The outdoor sensor fault
The reason of fault and its solutions = 1. Check whether the resistance of sensor is normal, otherwise replace it;
2. Check whether the sensor wire is short circuit or open circuit, and whether the plug is well contacted, whether there is welding off or rosin joint on the electric control board, repair it if there is any above;
3. When the 1 and 2 are both normal ,then the component or integrated circuit is damaged, the electric control board should be replaced.

The fault code = F7
The fault content = The outdoor coil temperature sensor fault (Including the mid-point of tube. inspiratory gas)
The reason of fault and its solutions = 1. Check whether the resistance of sensor is normal, otherwise replace it;
2.Check whether the sensor wire is short circuit or open circuit, and whether the plug is well contacted, whether there is welding off or rosin joint on the electric control board, repair it if there is any above;
3.When the 1 and 2 are both normal, then the component or integrated circuit is damaged, the electric control board should be replaced

The fault code = F9
The fault content = Exhaust gas sensor failure
The reason of fault and its solutions = 1. Check whether the resistance of sensor is normal, otherwise replace it;
2. Check whether the sensor wire is short circuit or open circuit, and whether the plug is well contacted, whether there is welding off or rosin joint on the electric control board, repair it if there is any above;
3. When the 1 and 2 are both normal, then the component or integrated circuit is damaged, the electric control board should be replaced.

The fault code = FA
The fault content = The communication fault between the wire controller and the indoor PCB
The reason of fault and its solutions = 1. check whether the wire controller’s connecting wire is short circuit or loose, please make it connect well;
2. Check the connecting line.wire controller.PCB whether they are loose or have a bad contact. Please make them have a good contact.

The fault code = FC
The fault content = outdoor unit driving fault, starting compressor failure
The reason of fault and its solutions = 1. Turn on the power again, and then check whether the operation of the compressor is normal;
2. Check whether the connection of the compressor is correct or reliable, otherwise repair it;
3. Check whether the components on the electric control board have been damaged, if they are damaged, the components or the electric control board should be replaced.;
4. Check whether the connecting wires are disentwined between the Intelligent Power Module board and the main board, otherwise make the wires connect firmly .

The fault code = FF
The fault content = The outdoor DC motor fault
The reason of fault and its solutions = 1. Check the resistance value of the DC motor port. If it is short circuit, please change the DC motor;
2. Check the voltage value of the DC motor port VCC(15Vdc), Vdm(340Vdc),please change the PCB board if the voltage values are abnormal;
3. if all the voltage values of the DC motor port are normal,the Vsp voltage (0~5v) is also ok ,it shows that the inner PCB board of the DC motor is damaged, then change the DC motor.

The fault code = FH
The fault content = The indoor unit EEPROM error
The reason of fault and its solutions = 1. Check whether there are false weld and bad contact etc between the EEPROM chip block and the electronic control board ;
2. Check whether the EEPROM chip pin is broken foot and the direction of installation is in line with the
EEPROM block;
3. When the procedure of EEPROM chip and itself have fault it will appear the code FH. That is the need to replace the EEPROM chip.

The fault code = dF
The fault content = The indoor unit EEPROM error
The reason of fault and its solutions = 1. Check whether there are false weld and bad contact etc
between the EEPROM chip block and the electronic control board ;
2. Check whether the EEPROM chip pin is broken foot and the direction of installation is in line with the EEPROM block;
3. When the procedure of EEPROM chip and itself have fault it will appear the code FH. That is the need to replace the EEPROM chip.

The fault code = dI
The fault content = Mode conflict
The reason of fault and its solutions = When the running mode for No.1 indoor unit is different from No.2 indoor unit, the dF is displayed.

The fault code = P1
The fault content = Indoor coil temperature
over-temperature protection for heating (thermal overload), outdoor coil temperature overheating protection for cooling (cooling overload)
The reason of fault and its solutions = 1. Check whether the ambient temperature is over the range of air-conditioning running temperature ;
2. Check whether the indoor coil temperature is higher than or equal to 63 degrees when heating and check whether the outdoor coil temperature is higher than or equal to 65 degrees when cooling, it will appear protection if the value is over the above;
3. Check whether the parameters of indoor and outdoor coil temperature sensors are normal, if abnormal, please replace the sensors;
4. If the above are normal, check whether the main control board output parameters are normal, if abnormal, please replace the main control board.

The fault code = P2
The fault content = The outdoor unit inverter module protection fault
The reason of fault and its solutions = 1. Check whether the connection of the compressor is reliable, otherwise connect firmly again;
2. Check whether the fixation between the IPM module and the radiator is firm.;
3. Check whether the compressor is well, otherwise replace it;
4. Check whether the IPM module is abnormal, otherwise replace it.

The fault code = P3
The fault content = Over current of outdoor unit
The reason of fault and its solutions = 1. Check whether the ambient temperature exceeds the operation range for the air conditioner;
2. Check whether the current detection circuit is abnormal, the electric control should be replaced when it is abnormal.

The fault code = P4
The fault content = discharge temperature of compressor is too high, the outside ambient temperature over-temperature, switch off the compressor shell temperature, module temperature over-temperature
The reason of fault and its solutions = 1. Check whether the pressure is normal when the unit is running, if it is abnormal, you should detect the leakage and then welding and adding refrigerant;
2. Check whether the ambient temperature is too high or too low, when the temperature is more than -20 degrees and less 55 degrees, it can disappear automatically;
3. Check whether temperature switch of compressor is damage, it should be replaced if it is damaged.

The fault code = P7
The fault content = The outdoor unit DC generatrix voltage is abnormal
The reason of fault and its solutions = 1. Check whether the supply voltage is out of ranging from 150 to 270V;
2. Check the voltage detection circuit of the IPM base board is abnormal, if it is abnormal, the IPM base board or the electric control board should be replaced.

The fault code = P8
The fault content = lack refrigerant or reverse valve fault
The reason of fault and its solutions = 1. Check whether the high and low pressure valves have been opened, otherwise open the valves;
2. Check whether the indoor coil pipe temperature sensor is normal, if it is abnormal, the sensor should be replaced;
3. Check whether the indoor coil temperature sensor hung in the air, please plug it in a correct position if the indoor coil temperature sensor hung in the air;
4. Check the system pressure is abnormal, if it is abnormal, you should detect leakage and the welding and adding the refrigerant.;
5. Please change the outdoor PCB board , if all above are normal.

The fault code = PA
The fault content = protection when indoor pipe temperature is too low (Anti-icing)
The reason of fault and its solutions = 1. Check whether the ambient temperature is over the range of air-conditioning running temperature;
2. Check the indoor coil temperature is less than or equal to -1 degrees, if more than this value it will be the protection of;
3. Check whether the indoor coil temperature sensor parameters are normal, if abnormal it is the replacement of the sensor;
4. If the above are normal, check whether the main control board output parameters are normal, if abnormal ,please replace the main control board.

The fault code = PC
The fault content = Outdoor ambient temperature over-temperature protection (including high and low)
The reason of fault and its solutions = 1. Check whether the outdoor ambient temperature is too high or too low, when the ambient temperature is lower than (T> -20, T <55), this fault automatically discharges;
2. Check whether the outdoor temperature sensor’s ring temperature parameters are normal, if abnormal ,please replace the sensor;
3. If the above are normal, check whether the main control board’s output parameters are normal, f abnormal ,please replace the main control board.

The fault code = PE
The fault content = EEPROM reading error (outdoor unit)
The reason of fault and its solutions = 1. Check whether there are false weld and bad contact etc between the EEPROM chip block and the electronic control board ;
2. Check whether the EEPROM chip pin is broken foot and the direction of installation is in line with the EEPROM block;
3. When the procedure of EEPROM chip and itself have fault it will appear the code PE. At this time there is the need toreplace the EEPROM chip.






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Sunday, June 24, 2012

HAIER CHILLER FAULT CODE

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E01 flow switch fault
Troubleshooting: stop all module chillers
Faliure resume:this fault is unresume failure
Must cut off power,after eliminate failures,then restart

E05 triple-phase AC input lack phase protection
Troubleshooting: stop all compressors, water pump, fan motor(if master unit occurs this fault,all modules will stop,slave unit occurs this fault, only corresponding module unit will stop);
Troubleshooting resume:after AC input is normal,will auto resume;

E06 triple-phase AC input phase sequence protection
Troubleshooting: stop all compressors, water pump, fan motor(if master unit occurs this fault,all module units will stop,if slave unit occurs this fault,only corresponding module unit will stop );
Failure resume: after power off,adjust phase sequence,will resume.

E07 water return sensor fault
Troubleshooting: stop all compressors, water pump(if master unit occurs this fault,all module units will stop,if slave unit occurs this fault,unit won’t do stop protection);
Faliure resume: resume after change ambient sensor normally;

E08 water outlet temp. sensor fault
Troubleshooting: stop this unit’s all compressors;
Faliure resume: resume after change temp. sensor normally.

E09 outdoor ambient temp. sensor fault
Troubleshooting: stop this unit’s all compressors;
Faliure resume: resume after change temp. sensor normally;

E16 wired controller communication fault
Troubleshooting: system will do “OFF”manage
Faliure resume: auto resume after receiving wired controller communication signals.

E21 fan overload protection fault
Troubleshooting: stop this unit’s compressor
Faliure resume: unresumable

E22 A system high pressure protection
Troubleshooting: A system compressor stop;
Faliure resume: resume after signals shut;

E23 A system low pressure protection
Troubleshooting: A system compressor stops;
Failure resume: resume after signals shut;

E24 compressor 1 over current protection
Troubleshooting: A system compressor stops;
Faliure resume: auto resume;

E25 compressor 1 discharge temp. sensor open circuit or short circuit
Troubleshooting: A system compressor stops;
Failure resume: auto resume after changing sensor normally;

E26 A system coil(outlet) temp.sensor is open circuit or short circuit
Troubleshooting: stop A system compressor
Failure resume: auto resume after changing sensor.

E28 A system water exchange refigerant entrance port is open circuit or short circuit
Troubleshooting: stop A system compressor;
Failure resume: auto resume after changing sensor normally;

E29 A system suction temp. sensor is open circuit or short circuit
Troubleshooting: stop A system compressor
Failure resume: auto resume after changing sensor normally;

E30 A system coil(entrance)temp. sensor is open circuit or short circuit
Troubleshooting: A system compressor stops;
Failure resume: auto resume after changing sensor normally.

E31 compressor 1 discharge temp. sensor overhigh
Troubleshooting: A system compressor stops;
Failure resume: resume after changing temp. sensor or discharging temp. sensor < 90℃

E32 A system coil (exit) temp.sensor temp. overhigh
Trooubleshooting: A system compressor stops;
Failure resume: resume after A system coil(exit) senor temp.<55℃

E39 compressor 2 overcurrent protection
Troubleshooting: A system compressor stops;
Failure resume: auto resume;

E40 compressor 2 discharge temp. sensor is open circuit or short circuit
Troubleshooting: A system compressor stops;
Failure resume: auto resume after change sensor normally;

E46 compressor 2 discharge temp. is overhigh
Troubleshooting: A system compressor stops;
resume:resume after compressor 2 discharge temp.<90℃

E52 B system high pressure protection
Troubleshooting: B system compressor stops;
Failure resume: auto resume after signals shut

E53 B system low pressure protection
Troubleshooting: B system compressor stops;
Failure resume: auto resume after signals shut;

E54 compressor 3 over current protection
Troubleshooting: B system compressor stops;
resume: auto resume.

E55 compressor 3 discharge temp. sensor is open circuit or short circuit;
Troubleshooting: Bsystem compressor stops;
Failure resume: auto resume;

E56 B system coil(exit) temp. sensor is short circuit or short circuit
Troubleshooting: B system compressor stops;
Failure resume: auto resume after changing sensor normally.

E57 B system water exchange refirgerant entrance temp.sensor is open circuit or short circuit
Troubleshooting: B system compressor stops;
Failure resume: auto resume after changing sensor normally;

E58 B system water exchange refrigerant exit temp. sensor is open circuit or short circuit
Troubleshooting: B system compressor stops;
Failure resume: auto resume after changing sensor normally.

E59 B system suction temp. sensor is open circuit or short circuit
Troubleshooting: B system compressor stops;
Failure resume: auto resume after changing sensor normally

E60 B system coil(entrance) temp. sensor is open circuit or short circuit
Troubleshooting: B system compressor stops;
Failure resume: auto resume after changing sensor normally;

E61 compressor 3 discharging temp. sensor overhigh
Troubleshooting: B system compressor stops;
Failure resume: resume after changing temp. sensor or discharging temp. overhigh;

E62 B system coil(exit) temp. sensor overhigh
Troubleshooting: B system compressor stops;
Failure resume: resume after B system coil(exit) sensor temp<55℃

E69 compressor 4 overcurrent protection
Troubleshooting: B system compressor stops;
Failure resume: auto resume;

E70 compressor 4 discharging temp. sensor is open circuit or short circuit
Troubleshooting: B system compressor stops;
Failure resume: auto resume after changing sensor normally;

E76 compressor 4 discharging temp. sensor is overhigh
Troubleshooting: B system compressor stops;
Failure resume: resume after changing temp. sensor or discharging temp. <90℃
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