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Daikin Trouble Shooting Guide
Past & Current Models
Daikin Fault Codes
Outdoor Fault Codes
Fault Code Definition
L0
Failure of inverter system
L1
Failure of inverter PCB
L3
Electrical box temperature over
120°C when comp' off
L4
Fin temperature over 93°C
L5
Inverter instantaneous DC over
current
L6
Inverter instantaneous AC over
current
L8
Over current of inverter compressor Defect of inverter PCB compressor
L9
Inverter compressor start-up
failure
LA
Failure of power transistor
LC
Communication fails between PCB
& micro-computer
LC
Communication fails between
main & inverter PCB
P1
Imbalance of power supply
P2
Automatic refrigerant charge
operation stop
P3
Rise in electrical box temperature
P4
Failed radiating fin sensor
P8
Coil freeze protection during
Automatic charging
P9
Failure of humidifier fan motor
P9
Automatic charge operation
completed
PA
Broken humidifier heater wire
PA
Refrigerant cylinder empty
PC
Refrigerant cylinder empty
PE
Auto charge nearly completed
PH
Humidifier outlet temperature
sensor/abnormal heater temp'
PJ
Capacity not set
PJ
Capacity setting error
Supposed Causes
Defect power transistor, inverter PCB
Blown fuse, defect of inverter PCB, fan motor
Defect of fan motor, PCB,
power transistor
Failed sensor, short circuit of airflow
Defect of inverter PCB,
compressor lock/windings
Defect of inverter unit,
compressor lock/windings
lock/ windings
Defect of inverter PCB compressor
lock/ windings, refrigerant charge
Defect of power transistor, PCB, compressor
Noise, defect of PCB
Defect of inverter PCB, main PCB, fan PCB,
noise filter, compressor
Open phase, imbalance between phases,
Defect of main capacitor, inverter PCB
Closed stop valve, closed refrigerant cylinder valve
Defect of fin sensor, PCB, rise in
ambient temperature
Sensor open/short circuit
Close refrigerant cylinder and start again
Defect of fan motor, PCB
Blown thermal fuse, broken heater element
Cylinder on master unit empty
Cylinder on slave unit empty
Sensor open/short circuit, defect of PCB,
defect of heater unit
Capacity setting adaptor not fitted
Incorrect capacity setting
Split
Skyair
VRV
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