Temperature Sensor Error (E221, E231, E251, E320) - Samsung AE040JXEDEH Service Manual

Troubleshooting

4-5-3 Temperature sensor error (E221, E231, E251, E320)

1. Check items
1) Is the sensor connected correctly (CN43 in MAIN PBA)?
2) Is the postion of sensor correct?
3) Does the value of resistance satisfy the each temperature condition?
2. Check procedure
Is the connector connected
to match the color?
Is the temperature sensor
connected properly without
fracture?
Does the value of resistance
satisfy the each temperature
condition? (*)
Power on
Is the wire of sensor broken
or is there any poor contact?
54
<Error code for each temperature sensor>
Pin no.
CN43
1,2
in
3,4
MAIN PBA
5,6
7,8
Yes
Yes
(kΩ)
40
35
Yes
30
25
20
15
10
5
0
<outdoor, condenser temp. sensor>
Yes
Yes
Error
Temp. sensor
code
Outdoor E221
Condenser E231
Discharge E251
OLP E320
No
Connect the connector to match the color
No
Check the sensor cable and connector
No
ex) 10.17k
Ω at 25°C
-10 -5 0 5 10 15 20 25 30 35
(*)Resistance value for temperature sensor
No
Exchange the temperature sensor
(kΩ)
500
400
300
ex) 205.4k
200
100
0
(°C)
0 5 10 15 20 25 30 35 40
<discharge, OLP temp. sensor>
the temperature sensor
Samsung Electronics
Ω at 21°C
(°C)
50 60 70