T
ro
u
b
l
eshootin
g
4-80
S
a
m
s
u
n
g
El
e
c
troni
c
s
4-4-
3
6 MCU b
ra
nch p
art
set
up
error
– C
o
nn
e
c
t
m
ore
In
door
un
its
t
h
a
n wh
at
is
a
c
t
u
a
lly
set
up
i
n MCU
t/VNCFSPGJOEPPSVOJUTFYDFFETOVNCFSPGJOEPPSVOJUTFOUFSFEPO.$6TFUUJOH
Criteria
Cause of problem
t0DDVSTXIFOUIFOVNCFSPGJOEPPSVOJUTJOTUBMMFEFYDFFETUIBUSFHJTUFSFEJO.$6
Outdoor unit display
1
.
H
o
w
to
c
he
ck
C
he
ck
the
n
u
mb
er
o
f
indoor
u
nits
c
onne
c
ted
to
M
CU
then
read
ju
st
the
s
w
it
c
h
f
or
the
n
u
mb
er
o
f
u
nits
A
f
ter
c
o
m
p
l
etin
g
resettin
g
,
press
the
o
u
tdoor
u
nit
'
s
K
3
b
u
tton
to
reset
or
t
u
rn
o
ff
to
restart
.
Indoor unit display
MCU
BOX
#0
Outdoor
unit
PCB
MCU
PCB
OFF
MCU
address
setup
Indoor
number
setup MCU
number
setup
ON
Indoor
unit
address
Branch
part
use
setup
1
2
2
1
8
6
1
6
0
Branch
A
1
B
2
C
D
E
8
F
6
MCU
BOX
#
1
MCU
PCB
OFF
ON
1
3
7
9
0
0
1
Branch
A
B
D
E
0
7
F
2
C
×(O
peration
)
◑
(T
i
m
er
)
◑
(F
an
)
◑
(F
i
l
ter
)
×(
De
f
rost
)
