120
Check code
Outdoor 7-segment display
Wired
remote
controller Check code
Auxiliary code
AI-NET
central control
remote controller
Detected
position
Check code name
Status
Error detection condition
Check item (position)
H06
H06
—
20
I/F
Low-pressure protective operation
All stop
Low-pressure Ps detected
operation lower than 0.02MPa.
• Check full opening of service valve.
(Discharge gas and liquid side)
• Check outdoor PMV clogging.
• Check SV2 circuit and SV4 circuit error.
• Check low-pressure Ps sensor error.
• Check indoor air filter clogging.
• Check valve open of indoor PMV.
• Check refrigerant pipe clogging.
• Check outdoor fan operation. (In heating mode)
• Check refrigerant shortage.
• Check 4-way valve error. (Reversed error.).
L03
—
—
96
Indoor
Duplicated indoor center units
Corresponding
unit only stops.
There are multiple header units
in a group.
• Check indoor address.
• Check the change of remote controller connection
(Group/individual) after indoor address setup.
L04
L04
—
96
I/F
Duplicated outdoor line address
All stop
Line address setup is duplicated
against the outdoor unit in
different refrigerant pipe system.
• Check line address.
L05
—
—
96
I/F
Duplicated indoor units with priority
(Displayed on indoor unit with priority)
All stop
Indoor units with priority were
duplicated.
• Check display of indoor unit with priority.
L06
L06
No. of indoor units with
priority
96
I/F
Duplicated indoor units with priority
(Displayed on the unit other than
indoor unit with priority)
All stop
Indoor units with priority were
duplicated.
• Check display of indoor unit with priority and outdoor
unit.
L07
—
—
99
Indoor
Group line in individual indoor unit.
Corresponding
unit only stops.
At least one indoor unit
connected to a group existed in
the individual indoor units.
• Check indoor address.
L08
L08
—
99
Indoor
Indoor group / address unset
Corresponding
unit only stops.
Address was not yet set up.
• Check indoor address.
Note)
After installation, this code is displayed when the power
is first turned on.
L09
—
—
46
Indoor
Indoor capacity unset
Corresponding
unit only stops.
Indoor unit capacity was unset.
Set up indoor capacity. (DN=11)
L10
L10
—
88
I/F
Outdoor capacity unset
All stop
On the I/F P.C. board for service,
jumper line was not cut
according to the model.
Check model setup on outdoor I/F P.C. board A’ssy for
service.
L20
—
—
98
AI-NET,
Indoor
Duplicated central control addresses
All stop
Duplicated central control
addresses
• Check central control address.
• Check network adaptor P.C. board. (In case of AI-NET)
L28
L28
—
46
I/F
Quantity over of connected outdoor
units
All stop
There were more than four
outdoor units.
• Check No. of connected outdoor units.
(Max. 4 units per 1 system)
• Check communication line between outdoor units.
• Check outdoor P.C. board (I/F) error.