Samsung AM038KXWDCH, Service Manual, Page: 112 / 295

Troubleshooting
Samsung Electronics 109
4-3-25 Suction Temperature sensor error (Open/Short)
1. Cause of problem
Resistance value measure part
SUCT
SUCT
No
No
Yes
Yes
Outdoor unit suction
sensor connector (CN44) connected
to PBA?
Is the resistor value matching with
“NOTE1” table?
Separate the connector of the Outdoor Suction
sensor from the PBA and measure the resistance
valuebetween the 2 terminals.
Restart operation after replace the PBA.
Restart operation after connecting
the connector to PBA
Replace this part as it is the defective of the
Outdoor Suction sensor itself.
CN44 (1, 2)
NOTE1
Temperature(°C) Resistance(KΩ)
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
Outdoor unit
display
Indoorunit
display
Duct, Cassette (1/2 Way),Console, Celing Cassette (4/Mini4 Way) Wall-mounted (NeoForte)
Operation Defrost Timer Fan Filter/MPI Operation Defrost Timer Filter Operation Timer Turbo
× × ◑ ◑ ◑ × ◑ ◑ ◑ ● ◑ ◑
※ ● : ON ◑ : Flash ×: OFF
Judgment
Method
∙ Detect according to temperature detected with the suction #1 pipe temperature thermistor.
Cause of
problem
∙
Disconnection or breakdown of relevant sensor. (More than 4.5V or 0.5V less than)
4-3 Appropriate Measures for Different Symptom (cont.)