Samsung AM072FXVAFH series - EVI in Temperature Sensor Error (Open;Short)

Troubleshooting
Samsung Electronics 4-67
4-4-27 EVI In Temperature sensor error (Open/Short)
 Disconnection or breakdown of relevant sensor.
 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
Outdoor EVI IN
sensor connector (CN44) connected
to PCB?
Is the resistor value matching with
“NOTE1” table?
Separate the connector of the Outdoor EVI In
Temperature sensor from the PCB and measure
the resistance value be
tween 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
Outdoor EVI In Temperature sensor itsel
f.
No
No
Yes
Yes
Resistance value measure part
EVI-IN
EVI-IN
CN44 (3,4)
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