T
ro
u
b
l
eshootin
g
S
a
m
s
u
n
g
El
e
c
troni
c
s
4-99
4-4-55
:
C
o
mp
.
D
o
wn
d
u
e
to
L
o
w P
ress
u
re
P
rote
c
tio
n C
o
n
tro
l
I
ndoor
u
nit
disp
l
a
y
C
a
u
se
o
f
pro
b
l
e
m
×(O
peration
)
ስ
(
R
eser
v
ation
)
ስ
(Bl
ast
)
ስ
(F
i
l
ter
)
×(
De
f
rost
)
∙
R
e
f
ri
g
erant
shorta
g
e
∙ El
e
c
troni
c
e
x
pansion
v
a
lv
e
b
l
o
ck
ed
∙ S
er
v
i
c
e
v
a
lv
e
b
l
o
ck
ed
∙ L
o
w
press
u
re
sensor
de
f
e
c
ti
v
e
∙ L
ea
k
a
g
e
o
f
c
o
m
pressor
dis
c
har
g
e
c
he
ck
v
a
lv
e
o
f
not
-
g
o
-
end
o
u
tdoor
u
nit
∙ E
rror
m
a
y
b
e
f
o
u
nd
w
hen
u
sed
in
te
m
perat
u
re
ran
g
e
o
u
tside
the
c
onditions
o
f
u
se
(O
peratin
g
o
u
tside
te
m
perat
u
re
at
-
2
0°C
or
l
ess
f
or
heatin
g
and
operatin
g
o
u
tside
te
m
perat
u
re
at
-
5
°C
or
l
ess
f
or
C
oo
l
in
g)
Ju
d
g
m
ent
Method
∙ I
nspe
c
tion
w
hen
the
v
a
lu
e
o
f
l
o
w
press
u
re
sensor
is
0
.
8
kg
//
c
m
²,
or
l
ess
f
or
air
c
onditionin
g
and
0
.
6
kg
//
c
m
²
f
or
heatin
g
Ou
tdoor
u
nit
disp
l
a
y
I
s
the
S-
net
esti
m
ated
v
a
lu
e
and
the
Mani
f
o
l
d
G
a
u
g
e
v
a
lu
e
in
ran
g
e
?
A
re
the
I
ndoor
U
nit
and
Ou
tdoor
U
nit
EEV
nor
m
a
lly
operatin
g
?
A
re
there
an
y
b
l
o
ck
a
g
e
inside
the
pipe
? (
f
i
l
ter
et
c.)
C
he
ck
the
re
f
ri
g
erant
a
m
o
u
nt
.
I
s
there
an
y l
ea
k
a
g
e
in
the
L
i
qu
id
Pipe
V
a
lv
e
or
the
dis
c
har
g
e
c
he
ck
v
a
lv
e
o
f
the
not
-
g
o
-
end
Ou
tdoor
U
nit
w
hen
on
ly
so
m
e
Ou
tdoor
U
nits
are
operatin
g
?
C
o
mm
issionin
g
O
pen
the
S
er
v
i
c
e
V
a
lv
e
R
ep
l
a
c
e
L
o
w
Press
u
re
sensor
C
he
ck
the
re
l
e
v
ant
EEV
Pipe
inspe
c
tion
R
ep
l
a
c
e
re
l
e
v
ant
c
o
m
ponent
Y
es
Y
es
Y
es
No
A
re
a
ll
ser
v
i
c
e
v
a
lv
es
open
?
C
onne
c
t
S-
net
and
Mani
f
o
l
d
G
a
u
g
e
.
(
essentia
l
re
qu
ire
m
ent
)
No
No
No
Y
es
Y
es
1
.
C
a
u
se
o
f
pro
b
l
e
m
No
