123
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
as required for given model.
Check model setting of P.C.
board for servicing outdoor
I/F P.C. board.
L20
–
–
AI-NET
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.
9
2
L
9
2
L
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.
L30
L30
Detected
indoor address
Indoor
unit
External
interlock of
indoor unit
Stop of
corresponding
unit
Signal is present at
external error input
terminal (CN80) for 1
minute.
When external device is
connected to CN80
connector:
1) Check for defect in
external device.
2) Check for trouble in indoor
P.C. board.
When external device is not
connected to CN80
connector:
1) Check for trouble in indoor
P.C. board.
–
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.
P03
P03
–
I/F
Discharge
temperature TD
trouble
All stop
Discharge temperature (TD)
exceeds 115 °C.
Check outdoor service
valves (gas side, liquid
side) to confirm full
opening.
Check outdoor PMV for
clogging.
Check resistance
characteristics of TD
sensor.
Check for insufficiency in
refrigerant quantity.
Check for trouble in 4-way
valve.
Check leakage of SV4
circuit.
Check SV4 circuit (wiring
orinstallation trouble in SV4).
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
(*) Concerning the “00” auxiliary
code
1) The wrong model setting
for the interface P.C. board
was used when the board
was replaced with the service
P.C. board.
may be displayed.
In such a case, the sub-codes
“08” to “0F” for L29, which are
not included in the table above,
2) The wrong model setting for
the fan IPDU P.C. board was
used when the board was
replaced with the service
P.C. board.
Check code
O
Fan IPDU
02
O
03
O
O
04
O
05
O
O
06
O
O
07
O
O
O
01
1
(Upper)
2
(Lower)
A3-
IPDU
Circle (O): Troubled IPDU
Check leakage of SV5
circuit.
112
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2016/04/08 17:21:09
2016/04/08 17:21:09
AMP Air Conditioning
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