T
roub
l
eshooting
Sa
m
sung
El
ectronics
4-
5
1
4-3-32
: Comp. Down due to Low Pressure Protection Control
1
.
Cause
of
prob
l
e
m
Is
the
S
-
net
esti
m
ated
v
a
l
ue
and
the
Manifo
l
d
G
auge
v
a
l
ue
in
range
?
Are
the
Indoor
Unit
and
Outdoor
Unit
EE
V
nor
m
a
lly
operating
?
Are
there
an
y
b
l
oc
k
age
inside
the
pipe
? (
fi
l
ter
etc.
)
Chec
k
the
refrigerant
a
m
ount.
Is
there
an
y l
ea
k
age
in
the
L
i
q
uid
P
ipe
Va
lv
e
or
the
Discharge
chec
k v
a
lv
e
l
ea
k
ing
on
outdoor
unit
that
is
off
w
hen
on
ly
so
m
e
Outdoor
Units
are
operating
?
Auto
T
ria
l
Operation
Open
the
Ser
v
ice
Va
lv
e
R
ep
l
ace
L
o
w P
ressure
sensor
Chec
k
the
re
l
e
v
ant
EE
V
P
ipe
inspection
R
ep
l
ace
re
l
e
v
ant
co
m
ponent
Y
es
Y
es
Y
es
No
Are
a
ll
ser
v
ice
v
a
lv
es
open
?
Connect
S
-
net
and
Manifo
l
d
G
auge.
(
essentia
l
re
q
uire
m
ent
)
No
No
No
Y
es
Y
es
No
Outdoor
unit
disp
l
a
y
(
Air
Coo
l
ed
)
Indoorunit
disp
l
a
y
Duct
,
Cassette
(1/
2
W
a
y),
Conso
l
e
,
Ce
l
ing
Cassette
(4/
Mini
4 W
a
y)
W
a
ll-m
ounted
(
NeoForte
)
Operation
Defrost
T
i
m
er
Fan
Fi
l
ter
/
M
P
I Operation Defrost
T
i
m
er
Fi
l
ter Operation
T
i
m
er
T
urbo
×
×
◑
◑
◑
×
◑
◑
◑
●
◑
◑
※ ●
:
ON
◑
:
F
l
ash
×:
OFF
J
udg
m
ent
Method
∙ J
udg
m
ent
Method
:
Inspection
w
hen
the
v
a
l
ue
of
l
o
w
pressure
sensor
is
1
.
8k
g
//
c
m²,
or
l
ess
for
air
conditioning
and
0.
8k
g
//
c
m²
for
heating
Cause
of
prob
l
e
m
∙ R
efrigerant
shortage
∙ El
ectronic
e
x
pansion
v
a
lv
e
b
l
oc
k
ed
∙
Ser
v
ice
v
a
lv
e
b
l
oc
k
ed
∙ L
o
w
pressure
sensor
defecti
v
e
∙
Discharge
chec
k v
a
lv
e
l
ea
k
ing
on
outdoor
unit
that
is
off
∙ E
rror
m
a
y
be
found
w
hen
used
in
te
m
perature
range
outside
the
conditions
of
use
(
Operating
outside
te
m
perature
at
-
20
°
C
or
l
ess
for
heating
and
operating
outside
te
m
perature
at
-
5
°
C
or
l
ess
for
Coo
l
ing
)
Summary of Contents for AM080*XV Series
Page 205: ...Samsung Electronics 5 1 5 PCB Diagram and Parts List 5 1 ASS Y PCB MAIN...
Page 208: ...PCB Diagram and Parts List 5 4 Samsung Electronics 5 2 ASS YPCBMAIN HUB AC...
Page 210: ...PCB Diagram and Parts List 5 6 Samsung Electronics ASS YPCBMAIN HUB cont DC...
Page 216: ...PCB Diagram and Parts List 5 12 Samsung Electronics 5 4 ASS YPCBFAN Model 1 FANchassis...
Page 218: ...PCB Diagram and Parts List 5 14 Samsung Electronics ASS YPCBFAN cont Model 2 FAN chassis...
Page 241: ...Cycle Diagram 7 10 Samsung Electronics 7 16 AM240 260 280 300MXVAGC...