Samsung AM072FXVAFH series Service Manual page 161

4-4-26 Liquid Pipe Temperature sensor error (Open/Short)
Outdoor unit display
Operation Defrost
Indoorunit display
※ ● : 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)
1. How to check
temperature sensor connector (CN45)
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
Restart operation after replace the PCB
Samsung Electronics
Duct, Cassette (1/2 Way),Console, Celing
Timer Fan Filter/MPI Operation Defrost
× × ◑ ◑
Liquid pipe
connected to PCB?
Yes
"NOTE1" table?
Yes
Cassette (4/Mini4 Way)
Timer
◑ ◑ ◑
×
No
Restart operation after connecting the
connector to PCB
Resistance value measure part
LIQUID
No
Replace this part as it is the defective of
the Liquid Pipe Temperature sensor itself.
Wall-mounted (NeoForte)
Filter Operation Timer Turbo
◑ ● ◑ ◑
NOTE1
Temperature(°C) Resistance(KΩ)
70
60
50
40
30
20
10
0
-10
Troubleshooting
LIQUID
2.2
3.0
4.2
5.8
8.3
12.1
18.0
27.3
43.0
4-65