Troubleshooting
Samsung Electronics 229
4-4-3 Indoor Unit ROOM sensor Error (Open/Short)
1. How to check
x x x
(
x x x
:
The address of the error occurred indoor unit
)
×
(Operation)
◑
(Timer)
×
(Fan)
×
(Filter)
×
(Defrost)
t The room temperature sensor of No. XXX indoor unit has defective OPEN/SHORT
t Refer to how to determine below
Outdoor unit display
Indoor unit display
Criteria
Cause of problem
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
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