Troubleshooting
Samsung Electronics 4-27
■ Error on EVI (ESC) IN temperature sensor (Short or open). (E-321)
Outdoor unit Display E-321
Indoor unit Display
Duct, Cassette (1 / 2Way), Console, Ceiling
Operation Defrost Timer Fan Filter / MPI
◑
×
×
◑
×
Cassette (4Way / Mini 4Way)
Operation Defrost Timer Filter
◑
×
◑
×
Duct, Cassette (1/2 Way), Console, Ceiling
Operation Timer Turbo 24°C 27°C
◑
× ×
◑
×
※ ●
: ON
◑
: Flash ×: OFF
Judgement Method •Referthenextpage
Cause of problem •Disconnectionorbreakdownofrelevantsensor.
Did the connector for
the EVI In Temperature
sensor break away
from the PCB?
Restart operation after connecting the connector
to PCB
Yes
No
Did the resistance
value significantly stray
from the following
temperature table?
Replace this part as it is the defective of the
outdoor EVI in temperature sensor itself.
No
Yes
Restart operation after replace the PCB
Separate the connector of the Outdoor EVI In
Temperature sensor from the PCB and measure
the resistance value between the 2 terminals.
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