ON:
Blinking:
OFF:
Wireless remote
controller
receiver display
Abnormal
display
L04
L10
Operating
and standby
L13
lamps blinking
simultaneously
L18
P03
Operating
and standby
P04
lamp blinking
alternately
P05
P07
Timer and
standby
P13
lamp blinking
alternately
P14
P15
P16
Operating
and standby
lamp blinking
P22
alternately
P29
P31
Alarm contents
Duplication of outdoor unit address
Outdoor unit capacity is not set or setting error
Indoor unit type setting error
Type of indoor/outdoor units is different
4-way valve locked trouble / operation failure
Compressor discharge temperature trouble
Condensing pressure trouble
Open phase detected
AC power supply trouble
HIC (IPM) temperature trouble
Valve error
Refrigerant circuit error
Wrong installation for refrigerant piping and
wiring
O
sensor detected
2
Insufficient gas level detected
Compressor overcurrent trouble
Outdoor unit fan motor trouble
Outdoor unit fan trouble
Inverter compressor trouble
Indoor unit in group control trouble
143
Error location
Check the inter-unit control wiring
Replace the outdoor unit EEPROM
Capacity value re-setting
Replace the indoor unit EEPROM
Check the outdoor unit control PCB
Check the type of IU and OU, and re-set
address
Check the 4-way valve
Check the 4-way valve wiring
Check the outdoor unit control PCB
Check the refrigerant cycle (gas leak)
Trouble with the electronic expansion valve
Check the discharge temperature sensor
(TD)
Check the refrigerant cycle
Valve blockage
Heat exchanger obstruction
Check the power supply
Check the reactor wiring
Check the outdoor unit control PCB
Check the compressor wiring
Check the outdoor unit control PCB
Check the HIC
Compressor locked
Valve blockage
Valve blockage
Check the refrigerant circuit
Check the refrigerant piping and wiring
installation
Input from the O
sensor
2
Check the refrigerant cycle (gas leak)
Trouble with the electronic expansion valve
Valve (or refrigerant circuit) blockage
Layer short on the compressor
Compressor locked
Check the outdoor unit control PCB
Check the outdoor unit fan motor, connector
Layer short on the compressor
Check the outdoor unit control PCB
Check the inverter compressor wiring (Open
phase/Reverse phase)
Compressor actuation failure (include lock)
Valve (or refrigerant circuit) blockage
Repair indoor unit which blinking alarm