Samsung AM072FXVAFH series Service Manual page 160

Troubleshooting
Suction temperature sensor error (Open / Short)
✳✳
AM038/048/055KXWD
Outdoor unit display
Indoorunit display
Judgment Method
∙ Refer to the how to check below..
Cause of problem ∙ Disconnection or breakdown of relevant sensor.
1. How to check
Did the outdoor suction sensor connector
breakaway from the PCB?
Separate the connector of the Outdoor Suction sensor
from the PCB and measure the resistance value
between the 2 terminals.
Did the resistance value significantly stray from the
following temperature table?
Restart after replace the PCB
4-64
Duct, Cassette (1/2 Way),Console, Celing
Operation Defrost Timer Fan
◑ × × ◑
※ ● : ON ◑ : Flash ×: OFF
Yes
Yes
Yes
(cont.)
Cassette (4/Mini4 Way)
Filter/MPI Operation Defrost Timer
× ◑ × ◑
No
Restart after connecting the connector to PCB
Resistance value measure part
SUCT
No
Replace this part as it is the defective of the
outdoor suction sensor itself.
Wall-mounted (NeoForte)
Filter 18℃ 21℃ Turbo
× ◑ × ×
Suction
Temperature(°C) Resistance(KΩ)
70 2.2
60 3.0
50 4.2
40 5.8
30 8.3
20 12.1
10 18.0
0 27.3
-10 43.0
Samsung Electronics
24℃ 27℃
◑ ×