Samsung AM072/096/120/144FXVAFH, Service Manual

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Troubleshooting
4-48 Samsung Electronics
4-4-17 Outdoor Temperature Sensor Error
∙ Outdoor temperature sensor Open/Short is defective.
∙ Refer to the judgment method below.
Indoorunit display
Judgment Method
Cause of problem
Outdoor unit display
1. How to check
Is the outdoor
temperature sensor connector (CN43)
connected to PCB?
Did the resistance
value significantly stray from the following
temperature table?
After separating the outdoor temperature sensor
connector from the PCB, measure the resistance
value between the terminals.
Restart operation after replace the PCB
Restart operation after connecting
the connector to the PCB.
Replace this since it is the defective of
the outdoor temperature sensor itself.
Yes
No
No
Yes
Temperature (°C)
70
60
50
40
30
20
10
0
-10
Resistance (KΩ)
2.2
3.0
4.2
5.8
8.3
12.1
18.0
27.3
43.0
Resistance value measure part
OUT
OUT
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