T
ro
u
b
l
eshootin
g
4-1
2
4
S
a
m
s
u
n
g
El
e
c
troni
c
s
4-4-81
O
u
tdoor
F
a
n PCB
O
v
er
v
o
l
ta
g
e
/ L
o
w v
o
l
ta
g
e
error
Ou
tdoor
u
nit
disp
l
a
y
Ju
d
g
m
ent
Method
∙
N
-
phase
w
irin
g
error
and
E
M
I Fu
se
short
.
∙
D
C-L
in
k
Ov
er
v
o
l
ta
g
e
/ L
o
w
v
o
l
ta
g
e
o
cc
u
rs
.
C
a
u
se
o
f
pro
b
l
e
m
∙ C
he
ck
the
inp
u
t
w
irin
g
∙ E
M
I Fu
se
short
Po
w
er
O
ff
Y
es
I
s
I
n
v
erter
P
CB C
N
1
5
and
F
an
P
CB C
N
11
D
C-L
in
k
v
o
l
ta
g
e
c
onne
c
tion
w
ire
a
cc
u
rate
ly
c
onne
c
ted
?
C
onne
c
tion
and
then
restart
it
No
R
ep
l
a
c
e
F
an
P
CB
1
.
C
a
u
se
o
f
pro
b
l
e
m
