Troubleshooting
46
Samsung Electronics
Is the connector connected
to the matched color.
Yes
No
Connect the connector to the matched color.
Is the temperature sensor
connected properly without
fracture?
Yes
No
Check the sensor cable and connector .
Does the resistance satisfy
each temperature condition? (*)
Yes
No
Replace the temperature sensor.
Power on
Is the sensor wire damaged
or does it have poor contact?
Yes
No
0
5
10
15
20
25
30
35
40
-10
-5
0
5
10
15
20
25
30
35
0
100
200
300
400
500
0
5
10
15
20
25
30
35
40
50
60
70
(kΩ)
(kΩ)
(°C)
(°C)
(*)Resistance value for temperature sensor
<outdoor, condenser temp. sensor>
<discharge, OLP temp. sensor>
ex) 10.17k
Ω at 25°C
ex) 205.4k
Ω at 21°C
Power off and replace the PCB.
Power off and replace the temperature sensor.
CN 44
in
main PBA
Pin no.
Temp. sensor
Error
code
5,6
Water inlet (PHE)
Water outlet (PHE)
Refrigerant inlet (PHE)
3,4
E902
E901
E906
1,2
<Error code for each temperature sensor>
CN43 : white 8 pin
CN44 : yellow 6 pin
4-2-1 Temperature sensor errors (E221,E231,E251,E320,E901,E902,E906)
1. Check items
1) Is the sensor connected correctly (CN43 in MAIN PBA)?
2) Is the position of sensor correct?
2. Check procedure
Temp. sensor
Error Code
Water inlet (PHE)
E901
Water outlet (PHE)
E902
Refrigerant inlet (PHE)
E096
