Check code
Location
of
detection
Description System status
Check code detection
condition(s)
Check items (locations)
Main
remote
controller
Outdoor 7-segment display
Check
code
Sub-code
L05 – –
I/F Duplicated
priority indoor
unit (as
displayed on
priority indoor
unit)
All stop
More than one indoor units
have been set up as priority
indoor unit.
• Check display on priority
indoor unit.
L06 L06
No. of priority indoor units I/F Duplicated
priority indoor
unit (as
displayed on
indoor unit other
than priority
indoor unit)
All stop
More than one indoor units
have been set up as priority
indoor unit.
• Check displays on priority
indoor unit and outdoor
unit.
L07 – –
Indoor
unit
Connection of
group control
cable to stand-
alone indoor
unit
Stop of
corresponding
unit
There is at least one stand-
alone indoor unit to which
group control cable is
connected.
• Check indoor addresses.
L08 L08 –
Indoor
unit
Indoor group /
addresses not
set
Stop of
corresponding
unit
Address setting has not been
performed for indoor units.
• Check indoor addresses.
Note:
This code is displayed
when power is turned on
for the first time after
installation.
L09 – –
Indoor
unit
Indoor capacity
not set
Stop of
corresponding
unit
Capacity setting has not been
performed for indoor unit.
Set indoor capacity. (DN =
11)
L10 L10 –
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
a
s required for given model.
Check model setting of P.C.
board for servicing outdoor
I/F P.C. board.
L20 – –
Network
adaptor
Indoor
unit
Duplicated
central control
address
All stop There is duplication in central
control address setting.
• Check central control
addresses.
• Check network adaptor
P.C. board .
L28 L28 –
I/F Too many
outdoor units
connected
All stop
There are more than three
outdoor units.
•
Check No. of outdoor units
connected (Only up to 3
units per system allowed).
• Check communication
lines between outdoor
units.
• Check for defect in outdoor
P.C. board (I/F).
Check switch setting of
Bit 3 and 4 of SW17 in
outdoor P.C. board (I/F).
Outdoor P.C. board (I/F)
does not operate normally.
All stop
SW setting
mistake
I/F
L23
•
− 155−
L12 L12
01:FS unit(s)
installation trouble
I/F
FS unit(s) outside
the application
setting
All stop
Set up other than multi
port type and single port
type (Long piping model)
FS unit(s) to 36 ton or
more system
・Check outdoor unit model
name
・Check FS unit model name
・Check restricted installation
of FS unit
L24 L24
01:Duplication
of FS units
address
02:Indoor units
operation
mode priority
setting
I/F
FS unit(s) setting
trouble
All stop
・Address setting has not
been performed for FS units
・Priority setting has not been
performed for indoor units
・Check FS units addres
・Check indoor units operation
mode priority setting
・Check outdoor unit 7
segment monitor
Check outdoor unit
model
Old model outdoor unit
(prior to 6 series) has
been connected
All stop
Incompatible
combination of
outdoor units
I/F
–
L17
•
L17
Check Cooling/Heating
FS unit
Cooling/heating cycle
trouble resulting from piping
trouble is detected
Stop of
corresponding
unit
FS unit
L18
•
Cooling/heating
selection unit
trouble
Check set Cooling-
only setting.
•
L18
L23
Clean converter seting
Detected indoor address
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