– 40 –
Possible causes
Abnormal outdoor unit discharge temperature
(
∗
) Protection device of
Outdoor unit high-pressure system error
outdoor unit is activated.
Four-way valve system error (judged by indoor unit)
Outdoor unit: Malfunction of fan
Protection device of
Outdoor unit: Inverter Idc activated
Outdoor unit: Position detect error
outdoor unit is activated.
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
Indoor unit sensor error
Room temperature sensor (TA) error
Discharge temperature sensor (TD) error
Temperature sensor (TE, TS) error
(
∗
) Outdoor unit sensor error
Outside air temperature sensor (TO) error
Failure of indoor unit EEPROM
Compressor breakdown
Compressor locking
(
∗
) Outdoor unit
Current detect circuit error
compressor system error
Outdoor unit low-pressure system error
Duplication of header indoor unit
Auto address
Group connection indoor unit for individual indoor unit
∗
If group configuration or
address at power on is invalid,
Group address not set
the unit enters enters address
setting setting mode automatically.
No setting (indoor unit capacity)
Duplication of indoor unit collective address
Other errors of outdoor unit (
∗
)
Others
External interlock error
Phase sequence error
Troubleshooting (Continued)
Outline of judgment (Contenued)
Lamp indication
Operation Timer Preparing
Alternate blinking
Operation Timer Preparing
Alternate blinking
Operation Timer Preparing
Alternate blinking
Operation Timer Preparing
Simultaneous blinking
Operation Timer Preparing
Blinking
Operation Timer Preparing
Simultaneous blinking
Operation Timer Preparing
Simultaneous blinking
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
(
∗
) Check code detected by outdoor unit is a typical example. It varies with outdoor unit of combination.
For details, see the Service Manual of applicable outdoor unit.
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