T
ro
ubl
eshooting
4-24
S
ams
u
ng
El
ectronics
Cont.
Outdoor unit is not powered on – Initial diagnosis ( 3phase)
1
.
Chec
k
items
:
1
)
I
s
the
power
s
u
pp
l
y
v
o
l
tage
380
V?
2
)
I
s
the
AC
power
connected
correct
l
y
?
3)
Are
the
LE
Ds
in
the
main
PCB
and
in
v
erter
PCB
of
the
o
u
tdoor
u
nit
ON
?
4
)
I
s
the
inp
u
t
power
v
o
l
tage
of
the
indoor
u
nit
22
0
V?
5)
I
s
the
wired
remote
contro
ll
er
connected
correct
l
y
?
2
.
T
ro
ubl
eshooting
proced
u
re
No
No
No
No
No
Chec
k
the
inp
u
t
power
Chec
k
connection
of
the
o
u
tdoor
u
nit
termina
l bl
oc
k
Chec
k
the
connection
wires
and
connectors
of
the
indoor
and
o
u
tdoor
u
nits
Rep
l
ace
the
PCB
of
the
indoor
u
nit
if
the
PCB
(T
ransformer
,
f
u
se
,
pcd
,
etc.)
fai
l
s
Rep
l
ace
the
wired
remote
contro
ll
er
Tu
rn
off
the
main
power
switch
(
circ
u
it
b
rea
k
of
power
o
u
t
l
et)
and
t
u
rn
on
again
after
30
seconds.
I
s
the
o
u
tdoor
u
nit
power
s
u
pp
l
y
(
N
-
R
,
N
-S,
N
-T
)
22
0
V
ac
?
I
s
the
o
u
tdoor
u
nit
power
v
o
l
tage
(L-
N)
22
0
V
ac
?
I
s
the
indoor
u
nit
power
s
u
pp
l
y
v
o
l
tage
(L-
N)
22
0
V
ac
?
I
s
the
indoor
u
nit
power
s
u
pp
l
y
v
o
l
tage
(V1-V2
)
12V
dc
?
Does
the
air
conditioner
operate
when
pressing
ON
/
O
FF bu
tton
of
the
wired
remote
contro
ll
er
?
