T
ro
u
b
l
eshooting
S
ams
u
ng
El
ectronics
4-7
3
4-4-
2
9 MCU b
ra
nch p
art
set
up
error
–
i
nc
o
n
se
cu
ti
v
e
c
o
nn
e
c
tio
n w
it
h
t
h
e
u
se
o
f
2
b
ra
nch p
arts
t
B
ranch
part
assemb
ly
error
Criteria
Cause of problem
t
W
hen
2
branch
parts
are
u
sed
for
one
indoor
u
nit
witho
u
t
connecting
them
consec
u
ti
v
e
ly
.
Outdoor unit display
1
.
H
ow
to
check
F
ind
an
M
CU
that
is
composed
as
the
fo
ll
owing
pict
u
re
to
carr
y
o
u
t
assemb
ly
of
branch
part
again.
A
fter
comp
l
eting
the
re
-
setting
,
press
K
3
b
u
tton
on
the
b
u
tton
to
reset
or
t
u
rn
it
off
to
restart.
Indoor unit display
MCU
BOX
#0
MCU
PCB
OFF
MCU
address
setup
ON
Setting
error
Indoor
unit
Indoor
unit
address
Branch
part
use
setup
4
2
1
2
5
6
0
Branch
A
4
B
2
C
D
E
5
F
6
×(O
peration
)
◑
(T
i
m
er
)
◑
(F
an
)
◑
(F
i
l
ter
)
×(
De
f
rost
)
