Troubleshooting
Samsung Electronics
55
4-4-6 Indoor Heat Exchanger's EVAP IN sensor dislocation error
1. How to diagnose
1) During Cooling Operation
2) During Heating operation
Tcond, out - Tair, out > 3°C
OK
Tair, in - Teva, out > 4°C
NO
Tair, in - Teva, out > 4°C
OK
Compressor in operation &
Indoor Unit operation &
Thermo On
OK
Error details
Breakaway Error of Indoor Heat
Exchanger EVA Out sensor
Average high pressure > 25kg/
cm²
OK
Average low pressure > 8.5kg/
cm²
OK
Tcond, out - Tair, out ≥ 3°C
OK
Tair, in - Teva, out ≥ 2°C
NO
Tcond, out - Tair, out < -2°C
OK
Compressor in operation & Indoor
Unit operation & Thermo On
OK
Error details
Breakaway Error of Indoor Heat
Exchanger EVA Out sensor
2. How to check
* Hydro Unit : Before and after the Compressor operation, EVA Out tem-
perature difference is less than 3
°C.
Restart operation after connecting
the connector to the PCB.
After separating the Indoor EVA In sensor
connector from the PCB, measure the
resistance value between the two terminals.
Yes
No
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
Did the Indoor EVA In sensor
connector breakaway from the PCB?
Yes
No
Did the resistance value significantly
stray from the following temperature table?
Restart operation after replace the PCB.
Replace this part as it is the defective of the
Indoor EVA In sensor itself.
Temperature(
℃
) Resistance(K
Ω
)
Outdoor unit display
x x x (x x x : The address of the error occurred indoor unit)
Indoor unit display
Operation
Timer
Criteria
• Refer to how to determine below
Cause of problem
• Indoor heat exchanger's EVAP IN piping sensor has been dislocated
