Samsung AM072FXVAFH series Service Manual page 150

Troubleshooting
Compressor Discharge or Top 1/2 Temperature sensor error
AM038/048/055KXWD
Outdoor unit display
Indoorunit display
Judgment Method ∙ Refer to the how to check below.
Cause of problem ∙ Compressor discharge or Top temperature sensor defective. (Open / Short)
1. How to check
Did the compressor discharge or Top
temperature sensor connector breakaway from
the PCB?
After separating the compressor discharge or
Top temperature sensor connector from the PCB,
measure the resistance value between the two
terminals.
Did the resistance value significantly stray from
the following temperature table?
Restart after replace the PCB
4-54
✳✳
(Compressor 1 Discharge)
(Compressor 1 Top)
Duct, Cassette (1/2 Way),Console, Celing
Operation Defrost Timer Fan
◑ × ◑
×
※ ● : ON ◑ : Flash × : OFF
Yes
Resistance value measure part
TOP(OLP)
Yes
(cont.)
Cassette (4/Mini4 Way)
Filter/MPI Operation Defrost Timer
◑ ◑
×
×
No
Restart after connecting the connector to PCB
Resistance value measure part
Discharge
No
Replace this part as it is the defective of the
compressor discharge or Top temperature
sensor itself.
Wall-mounted (NeoForte)
Filter Turbo
18℃ 21℃
× ◑ ×
×
TOP Discharge
(OLP)
Temperature (°C) Resistance (KΩ)
130
120
100
80
60
25 200.0
20 242.0
10 362.0
0 553.0
Samsung Electronics
24℃ 27℃
◑ ×
8.9
11.2
18.5
32.0
59.0