Daikin ARC433A Series Troubleshooting Manual

Daikin Trouble Shooting Guide
Daikin Fault Codes
Indoor Fault Codes
Fault Code Definition
A0 External protection active
A1 Failure of indoor PCB
A3 High water level
A5 HP control in heating or freeze
protection in cooling
A6 Fan motor failure
A7 Failure of louvre motor
A8 Failure of power supply
A9 EEV failure
AF High water level
AH Failure of dust collector
AJ Capacity setting error
C1 Communication failure. Between
main-sub PCB
C4 Indoor coil sensor
C5 Suction pipe sensor
C6 Failure of fan motor driver
C7 Front panel driving motor fault
C9 Return air sensor fault
CA Discharge air sensor fault
CC Failure of humidity sensor
CJ Failure of remote sensor
Daikin Fault Codes
Outdoor Fault Codes
Fault Code Definition
E0 Protection devices tripped
E1 Failure of outdoor PCB
E3 High pressure
E4 Low pressure
E5 Inverter compressor lock
E5 Inverter compressor to hot
E6 DOL compressor locked
E7 Fan motor failure
E8 Inv compressor high current
E9 EEV motor failure
EA 4-way valve failure
EC Inlet water temperature
EF Thermal storage unit defect
F3 High discharge temperature
F6 High pressure in cooling
F6 Over charged
H0 Compressor sensor system
H1 Failure of humidifier damper
H3 Failure of hp switch
H4 Failure of lp switch
H5 Failure of compressor sensor
H6 Compressor position failure
H7 Failure of fan motor signal
H8 Compressor input error
H9 Failed ambient sensor
J1 Failed pressure sensor
J2 Failed current sensor
J3 Failed discharge pipe sensor
J4 Failed outdoor coil vapour sensor
J5 Failed suction pipe sensor
J6 Failed outdoor coil sensor
J7 Failed liquid pipe sensor
J8 Failed liquid pipe sensor
J9 Failed sub cool heat exchanger sensor Sensor open/short circuit
JA Failed high pressure sensor
JC Failed low pressure sensor
JH Failed oil temperature sensor
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Supposed Causes
External protection wired to T1-T2 active
Defect of PCB or noise
Float switch open circuit
Poor airflow, short circuit, EEV, refrigerant charge,
indoor coil sensor incorrect value
Locked, over current, over load
Louvre motor/indoor PCB failed
Over current of AC input, defect of supply
Defect of EEV motor, indoor PCB
Float switch open circuit while thermo off
Defect of dust collecting element, PCB
Capacity setting adaptor missing
Failure of communication fan motor
control driver
Open/short circuit
Open/short circuit
Defect of fan motor sensor, control driver
Defect of limit switch, front panel driving motor
Return air sensor open/short circuit
Discharge air sensor open/short circuit
Failed humidity sensor
Defect of remote controller sensor
Supposed Causes
Outdoor safety device tripped
Defect of PCB or noise
High pressure switch tripped
Low pressure switch tripped
Inverter compressor locked
Compressor windings too hot
High current draw
Failed fan motor, PCB
Compressor, PCB
EEV motor, PCB
Defect of valve, PCB, sensor
Abnormal water temperature
Thermal storage EEV, PCB, sensor
Discharge temperature over 110°C
Detected by outdoor coil sensor
Refrigerant over charge
All sensors disconnected
Defect of limit switch/damper
High pressure switch open circuit
Low pressure switch open circuit
Defect of compressor overload sensor
Position detection error
Defect of fan motor, PCB
Defect of transistor, PCB, reactor
Sensor open short circuit
Pressure sensor failed
Defect of current sensor, PCB, compressor
Discharge pipe sensor open/short circuit
Sensor open/short circuit
Sensor open/short circuit
Sensor open/short circuit
Sensor open/short circuit
Sensor open/short circuit
High pressure sensor open/short circuit
Low pressure sensor open/short circuit
Open/short circuit
Past & Current Models
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