237
ON: Blinking:
OFF:
Abnormal
display
Wireless remote
controller
receiver display
Alarm contents
Error location
O
p
er
at
ion
Timer
Stand
by
Outdoo
r Unit
H01
Primary (input) overcurrent detected
Check the refrigerant cycle (abnormal
overload operation)
Check the outdoor unit control PCB
Check the power supply
H02
Timer lamp
blinking
PAM trouble
Check the outdoor unit control PCB
Compressor locked
Check the power supply
H03
Primary current CT sensor failure
Check the outdoor unit control PCB
H31
HIC trouble
DC voltage not detected
Check the outdoor unit control PCB
Check the HIC
Compressor locked
Valve blockage
L04
Duplication of outdoor unit address
Check the inter-unit control wiring
L10
Outdoor unit capacity is not set or setting error
Replace the outdoor unit EEPROM
Capacity value re-setting
L13
Operating
and standby
lamps blinking
simultaneously
Indoor unit type setting error
Type of indoor/outdoor units is different
Replace the indoor unit EEPROM
Check the outdoor unit control PCB
Check the type of IU and OU, and re-set
address
L18
4-way valve locked trouble / operation failure
Check the 4-way valve
Check the 4-way valve wiring
Check the outdoor unit control PCB
P03
Compressor discharge temperature trouble
Check the refrigerant cycle (gas leak)
Trouble with the electronic expansion valve
Check the discharge temperature sensor
(TD)
P04
Operating
and standby
lamp blinking
alternately
Condensing pressure trouble
Check the refrigerant cycle
Valve blockage
Heat exchanger obstruction
P05
Open phase detected
AC power supply trouble
Check the power supply
Check the reactor wiring
Check the outdoor unit control PCB
Check the compressor wiring
P07
HIC (IPM) temperature trouble
Check the outdoor unit control PCB
Check the HIC
Compressor locked
Valve blockage
P13
Timer and
standby
lamp blinking
alternately
Valve error
Refrigerant circuit error
Wrong installation for refrigerant piping and
wiring
Valve blockage
Check the refrigerant circuit
Check the refrigerant piping and wiring
installation
P14
O
2
sensor detected
Input from the O
2
sensor