Troubleshooting
26
Samsung Electronics
4-
3
-4 Ou
t
d
oor
tem
p
erat
u
re
se
n
sor
error
(E
rror
Co
d
e
: E221, E2
3
1, E2
5
1, E269)
1. Check items
1) Check the temperature sensor connector
2) Check the resistance value of outdoor temperature
2. Check procedure
Turn off the power
Connect the temperature sensor connector
No
Yes
Yes
Change the temperature sensor
o
Turn on the power
o
Check if everything is normal and end service
No
If the resistance value measure
on temperature sensor similar to the values on the
table on the right side?
Check if everything is normal and end service
No
Yes
Change the outdoor unit PBA
o
Turn on the power
o
Check if everything is normal and end service
(E
x
.) R
e
s
i
s
t
anc
e
va
l
u
e
fo
r
tem
p
e
ra
t
ur
e
s
me
asur
ed
by
Co
n
d
. S
e
ns
o
r/
o
u
tdoo
r
tem
p
e
ra
t
ur
e
s
e
ns
o
r : E231, E221
(E
x
.) R
e
s
i
s
t
anc
e
va
l
u
e
fo
r
tem
p
e
ra
t
ur
e
s
me
asur
ed
by
OLP S
e
ns
o
r/
Di
sc
h
arg
e
s
e
ns
o
r: E320, E251
Current
Temp. (°C)
Resistance
(kΩ)
Current
Temp. (°C)
Resistance
(kΩ)
70
4
20
10
60
5
10
20
50
6
0
30
40
7
-10
40
30
8
Current
Temp. (°C)
Resistance
(kΩ)
Current
Temp. (°C)
Resistance
(kΩ)
80
40
30
180
70
50
20
220
60
60
10
320
50
90
0
550
40
110
Check the CN43 connection
Check the CN44 connection
Is the temperature sensor
connector properly connected?
E
x
) T
em
p
e
ra
t
ur
e
26°
C
–
R
e
s
i
s
t
anc
e
10.28kΩ
E
x
) T
em
p
e
ra
t
ur
e
21°
C
–
R
e
s
i
s
t
anc
e
205.4kΩ
If the resistance value measure
on temperature sensor similar to the values on the
table on the right side?
OLP sensor: 200kΩ at 25°C
Discharge sensor: 200kΩ at 25°C
COND. sensor: 10kΩ at 25°C
Outdoor unit temperature sensor: 10kΩ at 25°C
OLP : 200Kohm at 25°C
D-tube : 10Kohm at 25°C
Error code
Error explanation
Error code
Error explanation
E221
Outdoor unit temperature sensor Error
E320
Indoor unit OLP sensor Error
E231
Outdoor unit COND.sensor Error
E308
Suction temperature sensor error
E251
Outdoor unit discharge sensor Error
E311
Double tube temperature sensor error
