77
ON:    Blinking:    OFF: 
Abnormal 
display
Wireless remote 
controller 
receiver display
Alarm contents Error location
Operation
Timer
Standby
Remotecontroller•IndoorUnit
P01
Timer and 
standby 
lamp blinking 
alternately
Indoor unit fan motor locked  •Removethecause
Indoor unit fan motor layer short •Replacethefanmotor
Contact failure in thermostat protector circuit •Correctthewiring
P09 Faulty wiring connections of (ceiling) indoor unit panel
•Correctthewiringconnection
•Correctinsertiondirectionofconnector(Hookisoutside.)
P10
Faulty drain pump  •Repair/Replace
Drainage failure •Correct
Contact failure of float switch wiring •Correctthewiring
High water alarm for the case of Middle static pressure 
duct (PF) model installed vertically
•Changethesetting
P11
Faulty drain pump  •Repair/Replace
Drain pump locked •Removethecause
P12
Indoor unit fan motor locked
Faulty wiring connections of indoor unit fan motor
•Removethecause
•Correctthewiring
Outdoor Unit
E06
Standby lamp 
blinking
Disconnection / Contact failure of indoor / outdoor control 
line *
•Correcttheindoor/outdoorcontrolline* 
Check the electrical connection of fuse (F302) on indoor 
unit control PCB (sub) 
In the case of the fuse opened on an indoor unit control 
PCB (sub), after correcting wiring connection, it substitutes 
an EMG plug for OC plug
•Disconnection of indoor / outdoor control line *
•Communication circuit fuse (F302) on indoor unit control 
PCB (sub) opened
Indoor unit control PCB address settings error •Indoorunitaddressre-setting
E12
Operating lamp 
blinking
Auto address setting start is prohibited •Checktheindoor/outdoorcontrolline*
E14 Duplication of main unit in group control
•Checktheindoor/outdoorcontrolline*
•Checktheindoorunitcombination
E15
Standby lamp 
blinking
Auto 
address 
alarm
The total capacity of indoor units is too low
•Checktheindoor/outdoorcontrolline*
•ChecktheindoorandoutdoorunitcontrolPCB
•Checkthepowersupply
•Capacityandaddressre-settingaftercorrectingthe
combination of units
E16
The total capacity of indoor units is too high
The number of indoor units is too many
E20 No indoor unit connected
E24 •Outdoor unit communication error •ChecktheoutdoorunitcontrolPCB
E29 •Outdoor unit communication error •ChecktheoutdoorunitcontrolPCB
F04
Operating and 
timer lamp blinking 
alternately
Compressor discharge temperature sensor (TD) trouble
•Checkthecompressordischargetemperaturesensor(TD)
•ChecktheoutdoorunitcontrolPCB
F06 Outdoor heat exchanger temperature sensor (C1) trouble
•Checktheoutdoorunitheatexchangertemperature
sensor (C1)
•ChecktheoutdoorunitcontrolPCB
F07 Outdoor heat exchanger temperature sensor (C2) trouble
•Checktheoutdoorunitheatexchangertemperature
sensor (C2)
•ChecktheoutdoorunitcontrolPCB
F08 Outdoor air temperature sensor (TO) trouble
•Checktheoutdoorairtemperaturesensor(TO)
•ChecktheoutdoorunitcontrolPCB
F12 Compressor suction temperature sensor (TS) trouble
•Checkthecompressorsuctiontemperaturesensor(TS)
•ChecktheoutdoorunitcontrolPCB
F23 Outdoor gas pipe temperature sensor trouble
•Checktheoutdoorgaspipetemperaturesensor
•ChecktheoutdoorunitcontrolPCB
F24 Outdoor liquid pipe temperature sensor trouble
•Checktheoutdoorliquidpipetemperaturesensor
•ChecktheoutdoorunitcontrolPCB
F31 Outdoor unit EEPROM trouble
•ChecktheoutdoorunitEEPROM
•ChecktheoutdoorunitcontrolPCB
H01
Timer lamp 
blinking
Primary (input) overcurrent detected
•Checktherefrigerantcycle(abnormaloverloadoperation)
•ChecktheoutdoorunitcontrolPCB
•Checkthepowersupply
H02 PA M trouble
•ChecktheoutdoorunitcontrolPCB
•Compressorlocked
•Checkthepowersupply
H03 Primary current CT sensor failure
•ChecktheoutdoorunitcontrolPCB
•Checkthepowersupply
H31
HIC trouble
DC voltage not detected
•ChecktheoutdoorunitcontrolPCB
•ChecktheHIC
•Compressorlocked
•Valveblockage
* 3-Line  :  Connection cable between outdoor and indoor unit
  2-Line  :  Inter-unit control wiring
01_330918_EU_Eng.indb   77 2021/9/9   11:27:06