Samsung AM080 XV Series - Liquid Pipe Temperature Sensor Error (Open;Short)

Troubleshooting
4-44 Samsung Electronics
4-3-26 Liquid Pipe Temperature sensor error (Open/Short)
1.
Cause of problem
No
No
Resistance value measure part
LIQUID
Yes
Yes
Liquid pipe
temperature sensor connector (CN45)
connected to PCB?
Separate the connector of the Liquid Pipe
Temperature sensor from the PCB and measure
the resistance value between the 2 terminals.
Is the resistor value matching with
“NOTE1” table?
Restart operation after replace the PCB.
Replace this part as it is the defective of
the Liquid Pipe Temperature sensor itself.
Restart operation after connecting
the connector to PCB
CN45 (1, 2)
NOTE1
Temperature(°C)Resistance(K)
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
LIQUID
Outdoor unit
display
Indoorunit
display
Duct, Cassette (1/2 Way),Console, Celing Cassette (4/Mini4 Way) Wall-mount ed (NeoForte)
Operation Defr ost Timer Fan Filter/MPI Operation Defrost Timer F ilter Operation Timer Turbo
××◑◑◑ ×◑◑◑ ● ◑◑
※ ●: ON ◑: Flash ×: OFF
Judgment
Method
 Refer to the judgment method below.
Cause of
problem
 Disconnection or breakdown of relevant sensor. (More than 4.5V or 0.5V less than)