Samsung AM080BXMDGH/EU - 4-3-13 MCU subcooler entrance;exit sensor error (Open;Short)

Troubleshooting
4-22 Samsung Electronics
1.
Cause of problem
Did the connector break away from the PCB?
Did the resistance value
significantly stray from the following
temperature table?
Separate the connector from the PCB and measure the
resistance value between the 2 terminals.
Restart operation after replace the PCB
Restart operation after connecting
the connector to PCB
Replace this part as it is the defective itself.
No
No
Yes
Yes
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
4-3-13 MCU subcooler entrance/exit sensor error (Open/Short)
Outdoor unit display
(FAN PCB(FAN1))
(FAN PCB(FAN2))
Indoor Unit Display
Judgment Method
∙ Fan rotation defective or vibration and noise of the defective operation.
∙ Hall IC there is no signal input.
Cause of
problem
∙ Connection status error.
∙ Hall IC wire disconnection.
∙ Defective circuit parts and defective manufacturing.
∙ Fan Motor defective.
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