Samsung AVMKH020EA4 Service Manual page 221

Troubleshooting
3. Check the subcooling temperature (T-subcool).
G Calculate the degree of subcooling (T-cond _ T-subcool=subcooling Temp.)
G If it maintains 1˚C ~ 10˚C, it is judged normal.
G
Example) Condensing temperature (45˚C) - Subcooling temperature (42˚C) = 3˚C
G Example) Degree of over cooling : 1˚C ≤ 3˚C ≤ 10˚C
4. Check if the outdoor unit fan operates.
G This checks the low/high operation of fan. (The operation status is displayed with red color.)
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