Troubleshooting
52
Samsung Electronics
4-4-3 Indoor Unit ROOM sensor Error (Open/Short)
1. How to check
Yes
Yes
Is indoor room temperature sensor
connector dislocated?
At that time,
is the resistance value significantly
deviated from the temp. table?
After separating indoor room
temperature sensor connector from PCB,
measure the resistance values between
both terminals
Re-start after replacing PCB.
Re-start after connecting
the connector to the PCB.
As it is due to an indoor oom temperature
sensor defect, replace it.
Yes
No
No
Ex) Room temp. 26°C – Resistance 0.926KΩ
Temperature
(°C)
Resistance
(KΩ)
70
60
50
40
30
21
10
0
-10
2.2
3.0
4.2
5.8
8.3
12.1
18.0
27.3
43.0
Outdoor unit display
x x x (x x x : The address of the error occurred indoor unit)
Indoor unit display
Operation
Timer
Criteria
• Refer to how to determine below
Cause of problem
• The room temperature sensor of No. XXX indoor unit has defective OPEN/SHORT
