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

Troubleshooting
4-68 Samsung Electronics
4-4-28 EVI Out 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 OUT sensor
connector (CN44) connected to PCB?
Is the resistor value matching with
“NOTE1” table?
Separate the connector of the Outdoor EVI Out
Temperature sensor from the PCB and measure the
resistance value betwee
n 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 Out Temperature sensor itself.
No
No
Yes
Yes
Resistance value measure part
EVI-OUT
EVI-OUT
CN44 (5,6)
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