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