– 68 –
Main
remote
control
Check code
L07
—
—
Indoor
unit
Connection of
group control
cable to
standalone
indoor unit
Stop of
corresponding
unit
There is at least one standalone
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 as 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 .
L23
—
—
I/F
SW setting
mistake
All stop
Outdoor P.C. board (I/F) does not
operate normally.
• Check switch setting of Bit 3 and
4 of SW17 in outdoor P.C. board
(I/F).
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).
—
L31
—
I/F
Extended IC
trouble
Continued
operation
There is part failure in P.C. board
(I/F).
Check outdoor P.C. board
(I/F).
P01
—
—
Indoor
unit
Indoor fan
motor trouble
Stop of
corresponding
unit
• Check the lock of fan motor
(AC fan).
• Check wiring.
L30
L30
Detected indoor
address
Indoor
unit
External
interlock of
indoor unit
Stop of
corresponding
unit
• Signal is present at external
trouble input terminal (CN080) for
1 minute.
When external device is
connected to CN080 connector:
1) Check for defect in external
device.
2) Check for defect in indoor P.C.
board.
When external device is not
connected to CN080 connector:
1) Check for defect in indoor P.C.
board.
L29
L29
I/F
Trouble in No.
of IPDUs
All stop
Insufficient number of IPDUs are
detected when power is turned on.
• Check model setting of P.C.
board for servicing outdoor I/F
P.C. board.
• Check connection of UART
communication connector.
• Check A3-IPDU, fan IPDU, and
I/F P.C. board for defect.
Outdoor 7-segment display
Check
code
Sub-code
Location
of
detection
Description
System status
Trouble detection
condition(s)
Check items (locations)
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.
Circle (O): Faulty IPDU
Sub-
code
A3-
IPDU
Fan-
IPDU
1
01
02
03
04
05
06
07
08
09
0A
0B
0C
0D
0E
0F
11
12
13
18
19
1A
1B
O
O
O
O
O
O
O
O
O
O
O
O
2
O
O
O
O
O
O
O
O
O
O
O
O
3
O
O
O
O
O
O
O
O
1
O
O
O
O
O
O
O
O
O
O
O
O
2
O
O
O
O
O
O
O