Evi Out Temperature Sensor Error (Open/Short) - Samsung AM072FXVAFH series Service Manual

Troubleshooting

4-4-28 EVI Out Temperature sensor error (Open/Short)

Outdoor unit display
Operation Defrost
Indoorunit display
※ ● : ON ◑ : Flash ×: OFF
Judgment Method ∙ Refer to the judgment method below.
Cause of problem
∙ Disconnection or breakdown of relevant sensor.
1. How to check
Outdoor EVI OUT sensor
connector (CN44) connected to PCB?
Separate the connector of the Outdoor EVI Out
Temperature sensor from the PCB and measure the
resistance value between the 2 terminals.
Is the resistor value matching with
"NOTE1" table?
Restart operation after replace the PCB
4-68
Duct, Cassette (1/2 Way),Console, Celing
Timer Fan Filter/MPI Operation Defrost
× × ◑ ◑
Yes
Yes
Cassette (4/Mini4 Way)
Timer
◑ ◑ ◑
×
No
Restart operation after connecting
the connector to PCB
Resistance value measure part
EVI-OUT
CN44 (5,6)
No
Replace this part as it is the defective of the
Outdoor EVI Out Temperature sensor itself.
Wall-mounted (NeoForte)
Filter Operation Timer Turbo
◑ ● ◑ ◑
NOTE1
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
EVI-OUT