Troubleshooting
Samsung Electronics 4-65
4-4-26 Liquid Pipe Temperature sensor error (Open/Short)
Disconnection or breakdown of relevant sensor. (More than 4.5V or 0.5V less than)
Refer to the judgment method below.
Indoorunit display
Judgment Method
Cause of problem
Outdoor unit display
Duct, Cassette (1/2 Way),Console, Celing Cassette (4/Mini4 Way) Wall-mounted (NeoForte)
Operation
Defrost TimerFan Filter/MPI
Operation
Defrost Timer Filter
Operation
TimerTurbo
× ×◑◑◑
×
◑◑◑
●
◑◑
※ ● :
ON
◑ :
Flash
×:
OFF
1.
How to check
Liquid pipe
temperature sensor connector (CN45)
connected to PCB?
Is the resistor value matching with
“NOTE1” table?
Separate the connector of the Liquid Pipe
Temperature sensor from the PCB and measure the
resist
ance 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 of
the Liquid Pipe T
emperature sensor itself.
No
No
Yes
Yes
Resistance value measure part
LIQUID
LIQUID
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
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