Troubleshooting
Samsung Electronics
4-57
4-4-2. Indoor heat exchanger temperature sensor error (E122)
Yes
No
No
In this case, is the resistance
value out of range in the temperature table
on the right?
Yes
Is the indoor heat exchanger
temperature sensor connector disconnected
from the PCB?
Restart the system after replacing the PCB
Restart the system after
connecting the connector to PCB
Failure of the indoor heat
exchanger temperature sensor
(replace)
Remove the indoor heat exchanger
temperature sensor connector from
the PCB and measure the resistance
between two terminals
Current
temperature
(°C)
Resistance
(kΩ)
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
<Temperature sensor resistance value>
Display
Outdoor Unit display
E122
Wired remote Control, Wind Free RAC
E122, E123
Duct, 1way Cassette
4way Cassette,
4way Cassette(600x600)
MAX4
Console
360 Cassette
or
or
or
RED ●↔GRN ●
Duct
Blue
Red
1way
Blue Yellow
◑
X
◑
X
X
◑
◑
X
X
◑
◑
X
X
X
◑
X
◑
Judgment
method
Refer to checking method, as shown below
Symtom
If the short or open circuit of indoor heat exchanger temperature sensor.