
Failure mode detected by indoor unit
Operation of diagnostic function
Check
code
E0
3
E04
E08
L0
3
L07
L08
L09
L
3
0
P10
P12
P19
P
3
1
F01
F02
F10
F29
E10
E18
Cause of operation
No comm
u
nication from remote
controller (incl
u
ding wirele
ss
) and
comm
u
nication adapter
The
s
erial
s
ignal i
s
not o
u
tp
u
t from
o
u
tdoor
u
nit to indoor
u
nit.
• Mi
s
wiring of inter-
u
nit wire
• Defective
s
erial
s
ending circ
u
it on
o
u
tdoor P.C. board
• Defective
s
erial receiving circ
u
it on
indoor P.C. board
D
u
plicated indoor
u
nit addre
ss
D
u
plicated indoor header
u
nit
There i
s
gro
u
p wire in individ
u
al indoor
u
nit.
Un
s
et indoor gro
u
p addre
ss
Un
s
et indoor capacity
Abnormal inp
u
t of o
u
t
s
ide interlock
Float
s
witch operation
• Float circ
u
it, Di
s
connection,
Coming-off, Float
s
witch contact
tro
u
ble
Indoor DC fan tro
u
ble
4-way valve
s
y
s
tem tro
u
ble
• After heating operation ha
s
s
tarted,
indoor heat exchanger
s
temp. i
s
down.
Own
u
nit
s
top
s
while warning i
s
o
u
tp
u
t
to other indoor
u
nit
s
.
Coming-off, di
s
connection or
s
hort of
indoor heat exchanger temp.
s
en
s
or
(TCJ)
Coming-off, di
s
connection or
s
hort of
indoor heat exchanger temp.
s
en
s
or
(TC)
Coming-off, di
s
connection or
s
hort of
indoor heat exchanger temp.
s
en
s
or
(TA)
Indoor EEPROM tro
u
ble
• EEPROM acce
ss
tro
u
ble
Comm
u
nication tro
u
ble between indoor
MCU
• Comm
u
nication tro
u
ble between fan
driving MCU and main MCU
Reg
u
lar comm
u
nication tro
u
ble between
indoor a
s
ter and follower
u
nit
s
and
between main and
su
b
u
nit
s
Status of
air conditioner
Stop
(A
u
tomatic re
s
et)
Stop
(A
u
tomatic re
s
et)
Stop
Stop
Stop
Stop
Stop
Stop
(A
u
tomatic re
s
et)
Stop
(Follower
u
nit)
(A
u
tomatic re
s
et)
Stop
(A
u
tomatic re
s
et)
Stop
(A
u
tomatic re
s
et)
Stop
(A
u
tomatic re
s
et)
Stop
(A
u
tomatic re
s
et)
Stop
(A
u
tomatic re
s
et)
Stop
(A
u
tomatic re
s
et)
Condition
Di
s
played when
tro
u
ble i
s
detected
Di
s
played when
tro
u
ble i
s
detected
Di
s
played when
tro
u
ble i
s
detected
Di
s
played when
tro
u
ble i
s
detected
Di
s
played when
tro
u
ble i
s
detected
Di
s
played when
tro
u
ble i
s
detected
Di
s
played when
tro
u
ble i
s
detected
Di
s
played when
tro
u
ble i
s
detected
Di
s
played when
tro
u
ble i
s
detected
Di
s
played when
tro
u
ble i
s
detected
Di
s
played when
tro
u
ble i
s
detected
Di
s
played when
tro
u
ble i
s
detected
Di
s
played when
tro
u
ble i
s
detected
Di
s
played when
tro
u
ble i
s
detected
Di
s
played when
tro
u
ble i
s
detected
Judgment and measures
1. Check cable
s
of remote controller and comm
u
nication adapter
s
.
• Remote controller LCD di
s
play OFF (Di
s
connection)
• Central remote controller [97] check code
1. O
u
tdoor
u
nit doe
s
not completely operate.
• Inter-
u
nit wire check, correction of mi
s
wiring
• Check o
u
tdoor P.C. board. Correct wiring of P.C. board.
2. When o
u
tdoor
u
nit normally operate
s
Check P.C. board (Indoor receiving / O
u
tdoor
s
ending).
1. Check whether remote controller connection (Gro
u
p/Individ
u
al)
wa
s
changed or not after power
su
pply t
u
rned on
(Fini
s
h of gro
u
p con
s
tr
u
ction/Addre
ss
check).
* If gro
u
p con
s
tr
u
ction and addre
ss
are not normal when the
power ha
s
been t
u
rned on, the mode a
u
tomatically
s
hift
s
to
addre
ss
s
et
u
p mode. (Re
s
etting of addre
ss
)
1. Set indoor capacity (DN=11)
1. Check o
u
t
s
ide device
s
.
2. Check indoor P.C. board.
1. Tro
u
ble of drain p
u
mp
2. Clogging of drain p
u
mp
3
. Check float
s
witch.
4. Check indoor P.C. board.
1. Po
s
ition detection tro
u
ble
2. Over-c
u
rrent protective circ
u
it of indoor fan driving
u
nit operated.
3
. Indoor fan locked.
4. Check indoor P.C. board.
1. Check 4-way valve.
2. Check 2-way valve and check valve.
3
. Check indoor heat exchanger (TC/TCJ).
4. Check indoor P.C. board.
1.
2. Chec
J
u
dge follower
u
nit while header
u
nit i
s
[E0
3
], [L0
3
], [L07] or [L08].
k indoor P.C. board.
1. Check indoor heat exchanger temp.
s
en
s
or (TCJ).
2. Check indoor P.C. board.
1. Check indoor heat exchanger temp.
s
en
s
or (TC).
2. Check indoor P.C. board.
1. Check indoor heat exchanger temp.
s
en
s
or (TA).
2. Check indoor P.C. board.
1. Check indoor EEPROM. (incl
u
ding
s
ocket in
s
ertion)
2. Check indoor P.C. board.
1. Check indoor P.C. board.
1. Check remote controller wiring.
2. Check indoor power
su
pply wiring.
3
. Check indoor P.C. board.
FILE NO. SVM-18041
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