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Lamp indication Check code
P03
P04
P19
P22
P26
P29
P31
F01
F02
F10
F04
F06
F08
F29
H01
H02
H03
H06
L03
L07
L08
L09
L20
L29
L30
L31
Possible causes
Abnormal outdoor unit discharge
temperature
Outdoor u
nit high-pressure system error
Four-way valve system error (judged by indoor unit)
Outdoor unit: Malfunction of fan
Outdoor unit: Inverter Idc activated
Outdoor unit: Position detect error
Header and follower indoor units in the group are not running
due to the following alarm.
(Alarm code: E03, L03, L07, L08)
Heat exchange sensor (TCJ) error
Heat exchange sensor (TC) error
Room temperature sensor (TA) error
Discharge temperature sensor (TD) error
Temperature sensor (TE, TS) error
Outside air temperature sensor (TO) error
Failure of indoor unit EEPROM
Compressor breakdown
Compressor locking
Current detect circuit error
Outdoor unit low-pressure system error
Duplication of header indoor unit
Group connection indoor unit for
individual indoor unit
Group address not set
No setting (indoor unit capacity)
Duplication of indoor unit collective address
Other errors of outdoor unit (*)
External interlock error
Phase sequence error
(*) Protection device
of outdoor unit is
activated.
Protection device of
outdoor unit is activated.
Indoor unit sensor error
TIMER PREPARINGOPERATION
Alternate blinking
TIMER PREPARINGOPERATION
TIMER PREPARINGOPERATION
TIMER PREPARINGOPERATION
Others
TIMER PREPARINGOPERATION
TIMER PREPARINGOPERATION
TIMER PREPARINGOPERATION
Blinking
(*) Outdoor unit
sensor error
(*) Outdoor unit
compressor
system error
Alternate blinking
Alternate blinking
Simultaneous blinking
Simultaneous blinking
Simultaneous blinking
Troubleshooting (Continued)
Outline of judgment (Contenued)
(*) Check code detected by outdoor unit is a typical example. It varies with outdoor unit of combination.
For details, see the Service Guide of applicable outdoor unit.
*If group configuration
or address at power on
is invalid, the unit
enters address setting
mode automatically.
→
Auto address
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