T
ro
u
b
l
eshooting
S
ams
u
ng
El
ectronics
4-71
4-4-
2
7 In
ter
n
a
l PCB C
o
mmun
i
c
atio
n
error
o
f
t
h
e
O
u
tdoor
Un
it
C-B
o
x
Ou
tdoor
u
nit
disp
l
a
y
I
ndoor
u
nit
disp
l
a
y
×(O
peration)
ስ
(
Reser
v
ation)
ስ
(Bl
ast)
×(F
i
l
ter)
×(
Defrost)
Ju
dgment
Method
∙
P
CB
does
not
respond
to
the
in
v
oked
Main
P
CB
C
a
u
se
of
prob
l
em
∙ C-B
o
x
interna
l I
n
v
erter
P
CB, F
an
P
CB, Hu
b
P
CB
defecti
v
e
1
.
C
a
u
se
of
prob
l
em
Rep
l
ace
Hu
b
P
CB
Rep
l
ace
F
an
P
CB
(F
an
P
CB TX
part
: B
reakage)
Rep
l
ace
C
onnection
wire
C
heck
the
connection
stat
u
s
(C
N
1
2
connector)
F
an
P
CB C
N
1
3
connection
No
No
No
Y
es
Y
es
Y
es
C
onnection
wire
of
Hu
b
P
CB/
Main
P
CB
did
confirmation
?
(V
erif
y
the
broken
wire)
L
ighting
of
F
an
P
CB L
D
41
did
confirmation
?
I
s
F
an
P
CB C
N
1
3
connector
acc
u
rate
ly
connected
?
E
2
06 C001
E
2
06 C00
2
