Samsung Electronics 172
Troubleshooting
4-3-17 Outdoor Temperature Sensor Error
1.
Cause of problem
Is the outdoor
temperature sensor connector (CN43)
connected to PBA?
Did the resistance
value significantly stray from the following
temperature table?
After separating the outdoor temperature
sensor connector from the PBA, measure
the resistance value between the terminals.
Restart operation after replace the PBA
Restart operation after connecting
the connector to the PBA.
Replace this since it is the defective of
the outdoor temperature sensor itself.
Yes
No
No
CN43 (7, 8)
Yes
Resistance value measure part
OUT
OUT
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
24℃ 27℃
◑ × × ◑ × ◑ × ◑ × ◑ × × ◑ ×
※ ●: ON ◑: Flash ×: OFF
Judgment
Method
- Detect according to temperature detected with the outdoor-ambient temperature thermistor.
Cause of
problem
- Outdoor temperature sensor is defective. (open/short)
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
4-3 Appropriate Measures for Different Symptom (cont.)
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