– 54 –
Check code
Location
of
detection
Description
System status
Error detection
condition(s)
Check items (locations)
• Check indoor addresses.
Note:
This code is displayed
when power is turned on
for the first time after
installation.
Indoor unit
—
Indoor group /
addresses not
set
Stop of
corresponding unit
Address setting has not
been performed for indoor
units.
L08
L08
Set indoor capacity.
(DN = 11)
Indoor unit
—
Indoor capacity
not set
Stop of
corresponding unit
Capacity setting has not
been performed for indoor
unit.
L09
—
Check model setting of P.C.
board for servicing outdoor
I/F P.C. board.
I/F
—
Outdoor
capacity not set
All stop
Jumper wire provided on
P.C. board for servicing
I/F P.C. board has not been
removed as required for
given model.
L10
L10
• Check the remote controller
setting. (DN="0F")
• Check the cool / heat
switching unit.
Check the piping
connection of the switching
unit.
(Miswiring of discharge
gas / suction gas)
Check the SVS / SVD
valve miswiring /
misinstallation.
I/F
—
Cool / heat
switch unit error
Only the target
unit stopped
The heating operation was
performed without the
coolonly setting configured
in a cool-only room where a
cool / heat switch unit is not
connected.
L18
L18
Main
remote
controller
Outdoor 7-segment display
Check
code
Sub-code
• Check installation of TD3
sensor.
• Check connection of TD3
sensor connector and
wiring.
• Check resistance
characteristics of TD3
sensor.
• Check for defect in outdoor
P.C. board (I/F).
I/F
—
TD3 sensor
miswiring
(incomplete
insertion)
All stop
Air discharge temperature
(TD3) does not increase
despite compressor 3 being
in operation.
H25
H25
• Check the model name of
the outdoor unit.
• Check the miswiring of the
communication line
between indoor and
outdoor.
Indoor
unit
—
Outdoor unit
model mismatch
error
Only the target
unit stopped
An error was found on the
outdoor unit model.
L02
L02
• Check indoor addresses.
• Check for any change
made to remote controller
connection (group /
individual) since indoor
address setting.
Indoor
unit
—
Duplicated
indoor header
unit
Stop of
corresponding unit
There is more than one
header unit in group.
L03
—
• Check line addresses.
I/F
—
Duplicated
outdoor line
address
All stop
There is duplication in line
address setting for outdoor
units belonging to different
refrigerant piping systems.
L04
L04
• Check display on priority
indoor unit.
I/F
—
Duplicated
priority indoor
unit (as
displayed on
priority indoor
unit)
All stop
More than one indoor unit
has been set up as priority
indoor unit.
L05
—
• Check displays on priority
indoor unit and outdoor
unit.
I/F
No. of priority
indoor units
Duplicated
priority indoor
unit (as
displayed on
indoor unit other
than priority
indoor unit)
All stop
More than one indoor unit
have been set up as priority
indoor unit.
L06
L06
• Check the outdoor unit
model.
I/F
Target indoor
address
Outdoor unit
model mismatch
error
The outdoor unit model is
duplicate. The Cool/Heat
Flex series 1/2 are duplicate.
L17
L17
• Check indoor addresses.
Indoor unit
—
Connection of
group control
cable to
standalone
indoor unit
Stop of
corresponding unit
There is at least one stand-
alone indoor unit to which
group control cable is
connected.
L07
—
Indoor unit (including Hot Water Module)
