Troubleshooting
Samsung Electronics 4-51
4-3-29 Suction-2 Temperature Sensor Error (OPEN/SHORT)
1. Inspection Method
Yes
Suction2 sensor connector (CN44)
connected to PCB?
Is the resistor value matching with
“NOTE1” table?
Separate the connector of the Suction-2 sensor
from the PCB, and measure the resistance value
between the two terminals.
Restart operation after changing PCB
Restart operation after connecting the
connector to PCB
Change this part as it is the fault of the
outdoor Suction-2 sensor itself.
Yes
No
No
Resistance value measure part
CN46 (1, 2)
NOTE1
Temperature(°C) Resistance(KΩ)
70
60
50
40
30
20
10
0
-10
2.2
3.0
4.2
5.8
8.3
12.1
18.0
27.3
43.0
Outdoor unit
display
Indoorunit
display
Duct, Cassette (1/2 Way),Console, Celing Cassette (4/Mini4 Way) Wall-mounted (NeoForte)
Operation Defrost Timer Fan Filter/MPI Operation Defrost Timer Filter Operation Timer Turbo
× × ◑ ◑ ◑ × ◑ ◑ ◑
●
◑ ◑
※ ●: ON ◑: Flash ×: OFF
Judgment
Method
• Refer to the judgment method below.
Special Cause • Disconnection or breakdown of relevant sensor
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