T
ro
ubl
eshooting
S
ams
u
ng
El
ectronics
4-1
3
4-3 Troubleshooting by symptoms
Wire remote controller display
E121
Symptom
E
rror
of
Room
sensor
in
the
indoor
u
nit
(
Open
/S
hort)
Failure
S
hort
or
l
ea
k
age
of
the
Room
sensor
4-3-1 Indoor temperature sensor (open/short)
Y
es
No
No
I
n
this
case
,
is
the
resistance
v
a
lu
e
o
u
t
of
range
in
the
temperat
u
re
ta
bl
e
on
the
right
?
Y
es
I
s
indoor
temperat
u
re
sensor
disconnected
from
the
connector
in
PCB
?(
CN
412
)
Restart
the
system
after
rep
l
acing
the
PCB
Restart
the
system
after
connecting
to
the
PCB
connector
I
ndoor
temperat
u
re
sensor
fai
lu
re
(
rep
l
ace)
Remo
v
e
the
indoor
temperat
u
re
sensor
connector
from
the
PCB
and
meas
u
re
the
resistance
b
etween
two
termina
l
s
C
u
rrent
temperat
u
re
(°
C)
Resistance
(kΩ
)
4
0
5.800
±
3
%
35
6
.900
±
3
%
30
8.300
±
3
%
2
5
1
0.00
±
3
%
2
0
12
.
1
0
±
3
%
1
5
14
.70
±
3
%
1
0
1
8.00
±
3
%
5
22
.00
±
3
%
0
2
8.30
±
3
%
-
5
33.90
±
3
%
-1
0
42
.30
±
3
%
<Temperature sensor
resistance value>
