Samsung AVMKH020EA4 Service Manual page 264

The cooling test operation by S-NET (cont.)
4. Check the electronic expansion valve(E-valve).
G It is normal if the E-valve is 100~350 step.
5. Check the inlet temperature of Indoor unit
(T-evap in).
G It is normal if the Temp. difference between the room
Temp. and the inlet temperature of Indoor unit is over
+10˚C.
G But, It is abnormal if the room temp. is very higher than
the room average temp.
Example) 10˚C ≤ (21-4) = 17˚C
10˚C ≤ (18-3) = 15˚C
Example)
10˚C ≤ (21-3) = 18˚C
Example)
10˚C ≤ (24-5) = 19˚C
Example)
10˚C ≤ (18-4) = 14˚C
Example)
6. Check the outlet temperature of Indoor unit
(T-evap out).
G It is normal if the Temp. difference between the room
Temp. and the outlet temperature of Indoor unit is over
+10˚C.
G But, It is abnormal if the room temp. is very higher than
the room average temp.
Example) 10˚C ≤ (21-3) = 18˚C
10˚C ≤ (18-6) = 12˚C
Example)
10˚C ≤ (21-5) = 16˚C
Example)
10˚C ≤ (24-7) = 17˚C
Example)
10˚C ≤ (18-6) = 12˚C
Example)
• Operation status is judged by not 6 items of above separately but the relation of 2 items over at least.
Samsung Electronics
Reference Sheet
13-16