130
For d
e
ta
ils,
refe
r
to “8
-5
. Trou
blesh
oo
ting
in te
st o
pe
ra
tion
”.
Ch
ec
k
co
de
Ch
ec
k
co
de
n
am
e
Cau
se
Is
ther
e n
o
mi
sw
irin
g
/ di
sc
on
ne
cti
on
on
co
mm
unic
at
ion
li
ne
be
twe
en
ind
oo
r an
d
ou
tdo
or
?
Ye
s
S
ub-
code:
No. of
ind
oor uni
ts whic
h receiv
ed
si
gn
al
s
no
rm
al
ly
Decreased nu
mber of i
ndoor u
nits
1.
Com
muni
catio
n
lin
es
(
U1,
U2)
co
nnec
tion
er
ro
r
be
tween
indo
or
and
outdo
or
2.
Communication conne
ctor's co
nnec
tio
n trouble on i
ndo
or
unit, trouble on P.C. board
3.
Communication connector's connection trouble on outdoor
unit, trouble on I/F board
4.
P
owe
r s
upp
ly
of i
ndoo
r
unit
(
Is po
w
er turned
on?)
No
Is
c
on
ne
cti
on
of
C
N40
co
nn
ec
tor
on
ind
oo
r P.C.
b
oar
d
no
rm
al
?
No
Ye
s
No
Is
co
nn
ec
tio
n o
f CN0
1
co
nn
ec
to
r on
ou
tdo
or
I/F
P.C.
bo
ard
no
rm
al?
Ye
s
Is
p
ower
o
f ind
o
or
un
it
tu
rne
d o
n?
No
Ye
s
Ye
s
D
id
a
po
w
er
f
ai
lu
re
oc
cu
r?
No
Is
th
ere
no
no
is
e,
etc
?
Yes
No
Chec
k i
ndo
or
P.C.
board.
Failure
Re
pla
ce
Cor
rec
t c
omm
uni
cat
ion
line.
Cor
re
ct wir
in
g or c
onne
cto
r.
T
u
rn
on p
ower of i
ndo
or
u
nit.
Cl
ear
the
che
ck
co
de.
Ch
eck
no
is
e, etc
, an
d el
im
inat
e it
if
an
y.
(NOTE)
1. When
sign
al is n
o
t sent
fo
r a
ce
rt
ain p
e
riod
fr
om
th
e
in
d
oo
r un
it which
ha
s
use
d
to se
nd
signals no
rm
ally,
[E0
6]
is displayed
.
No
Wa
s
powe
r tu
rn
ed
on
in
o
rde
r o
f
in
do
o
r
u
ni
t
ou
tdo
or u
ni
t?
Chec
k cod
e
Ch
e
ck
co
de
na
me
Indoor / Outdoo
r commu
nication
circuit
trouble
(Detected at
in
door side)
Cause
1. P
ower of
outdo
or unit was fi
rstl
y tu
rned
o
n
2. Co
nnec
tio
n er
ror
of c
omm
uni
cati
on
lin
e be
tween
indo
or
a
nd ou
tdoor
3. End terminator resistor setup error on communication
b
etween
ind
oor and
outd
oor
4. A
ddress setu
p error
Yes
Is
c
on
nec
tio
n (U1 /
U2
te
rmi
na
ls
) of
in
do
or /
ou
tdo
or i
nte
r-u
n
it wir
e
no
rm
al
?
No
Ye
s
No
Is
c
on
ne
ct
or
co
nn
ecti
on
fr
om
U
1 /
U
2
te
rm
in
al
s
of
ind
oo
r
/ o
ut
do
or
inte
r-
un
it
wi
re
no
rm
al
?
Ye
s
No
Is the end terminator
resistor setup of outdoor
un
it
n
or
ma
l?
Ye
s
No
Is
a
dd
res
s
se
tup
c
orre
ct?
Ye
s
No
Is
p
ow
er
a
pp
lie
d
to
fus
e
(F0
3
) o
n i
nd
oo
r P.C.
boa
rd?
Ye
s
Ye
s
Is
the
re n
o n
o
is
e,
et
c?
Chec
k i
ndo
or
P.C. b
oard.
Failure
Re
pla
ce
C
or
rec
t c
onn
ecto
r
con
nec
tion
.
T
u
rn
on
p
ower
aga
in
in
o
rd
er
of
ind
oor unit
o
utdoo
r
u
ni
t.
Co
rr
ect inter-unit
wire.
Chec
k n
ois
e, e
tc,
and
eli
min
ate i
t i
f any
Corr
ect th
e en
d terminator
resistor setup.
Se
t up a
ddr
es
s a
gai
n.
Check connection of inter-unit wire
between indoor and outdoor
is correct, and then connect
communication line connector on
indoor P.C. board CN40 and
CN44.
No
120
A10-1510.indb 120
A10-1510.indb 120
2016/04/08 17:21:11
2016/04/08 17:21:11
AMP Air Conditioning
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