T
ro
ubl
eshooting
4-
3
6
S
ams
u
ng
El
ectronics
4-3-21 E466: DC Link Over voltage/ Low voltage error
1
.
Chec
kl
ist
:
1
)
I
s
the
power
v
o
l
tage
norma
l?(L
ightning
,
Power
interr
u
ption
etc.)
2
)
I
s
AC
Power
ca
bl
e
connection
norma
l?(
Detaching
the
wire)
2
.
T
ro
ubl
eshooting
proced
u
re
Y
es
No
No
No
No
Y
es
Y
es
Y
es
P
u
sh
the
center
b
ar
of
M
/
C
and
mes
u
re
the
resis
-
tance
of
each
contact.
Y
es
No
Ex
change
M
/
C
Chec
k
and
reconnecting
the
AC
power
ca
bl
e
wire
I
s
the
AC
Power
ca
bl
e
connection
to
the
o
u
tdoor
u
nit
termina
l bl
oc
k
good
?
Chec
k
and
reconnecting
the
reactor
wire
at
the
T
AB
termina
l
I
s
the
connection
of
reactor
termina
l
good
?
Rep
l
ace
the
bl
own
FUSE
Are
the
FUSE
s
on
E
M
I
PCB
bl
own
?
I
s
each
contact
resistance
norma
l?
(l
ess
than
0.
1
ohm)
Does
the
error
reappear
fre
qu
ent
l
y
T
he
ca
u
se
of
this
error
may
b
e
power
so
u
rce
tro
u-
bl
e
as
l
i
k
e
power
interr
u
ption.
Chec
k
the
power
so
u
rce.
Ex
change
I
N
VE
R
TE
R
PCB
