T
ro
u
b
l
eshooting
4-6
2
S
ams
u
ng
El
ectronics
4-4-18 S
i
mul
ta
n
eo
u
s
o
p
e
n
i
ng
o
f C
oo
l
i
ng/h
eati
ng MCU S
O
L V
a
lv
es
1
st
/
2
n
d
●
D
u
ring
the
first
detection
,
as
the
s
y
stem
restarts
after
making
an
a
u
tomatic
stop
to
check
a
prob
l
em
with
the
s
y
stem
●
D
u
ring
the
second
detection
,
p
l
ease
refer
to
the
fo
ll
owing
check
-u
p
methods.
1
.
H
ow
to
check
Y
es
A
re
an
indoor
u
nit
address
,
coo
l
ing
/
heating
position
of
the
M
CU SOL VALVE
connector
correct
ly
connected
?
C
heck
the
indoor
u
nit
address
,
coo
l
ing
/
heating
position
and
make
the
correct
connection.
Y
es
No
Y
es
Rep
l
ace
M
CU SOL VALVE BO
D
Y
I
s
a
coi
l
of
M
CU SOL VALVE
C
orrect
ly
connected
?
C
heck
the
coi
l
connection
and
fasten
it
again
No
W
hen
y
o
u
restart
it
after
rep
l
acing
M
CU SOL VALVE
coi
l
s
,
does
the
same
error
occ
u
r
again
?
Rep
l
ace
coi
l
s
as
the
y
are
defecti
v
e.
No
