Samsung AC026KNADEH Service Manual page 40

4-3-2 Indoor heat exchanger temperature sensor (open/short)
Indoor unit display
Symptom
Failure
Is the indoor heat exchanger
temperature sensor connector disconnected
from the PCB?
No
Remove the indoor heat exchanger
temperature sensor connector from
the PCB and measure the resistance
between two terminals
In this case, is the resistance
value out of range in the temperature table
on the right?
No
Restart the system after replacing the PCB
Samsung Electronics
Short or open circuit of indoor heat exchanger temperature sensor
Short or open circuit in the corresponding sensor
Yes
Restart the system after
connecting the connector to PCB
Yes
Failure of the indoor heat
exchanger temperature sensor
(replace)
<Temperature sensor
resistance value>
Current
Resistance
temperature
(kΩ)
(°C)
40 5.800
35 6.900
30 8.300
25 10.00
20 12.10
15 14.70
10 18.00
5 22.00
0 28.30
-5 33.90
-10 42.30
4-11