Samsung AVMKH020EA4 Service Manual page 263

Reference Sheet
13-4-3 The cooling test operation by S-NET
Judge the test operation by use of the S-NET data obtained from the test operation.
I
Before judgment,
I
G Judge the operation status by operating all of indoor units connected with the outdoor unit, and do 30 minutes after
operation.
I
G Standard for the judgment of item is applicable 21˚C ~ 43˚C of outdoor Temp. and 15˚C over of indoor Temperature.
If running conditions are out of this range, judge options are maybe differ from standards.
1. Check the compressor discharge temperature(T-discharge).
G It is normal if the temperature is 70˚C ~ 110˚C
Example) T-discharge: 70˚C ≤ 95˚C ≤ 110˚C
2. Check the condensing temperature(T-cond).
G It is normal if the temperature 5˚C ~ 20˚C over than that
of outdoor(T-air. out).
Example) T-cond. : (29+5): 34˚C ≤ 45˚C ≤ (29+20) : 49˚C
3. Calculate the subcooling temperature.
(T-cond. _ T-subcool = subcooling Temp.)
G It is normal if the subcooling temperature is 1˚C ~ 10˚C
Example) T-cond. _ T-subcool = 45˚C - 42˚C = 3˚C
The subcooling Temp. : 1˚C ≤ 3˚C ≤ 10˚C
13-15 Samsung Electronics