Samsung RT38 Service Manual page 33

TROUBLESHOOTING
4-1-1-2-2. Forced Defrost Function
2-1) When it is on the Forced Operation during the Test Mode, press any button once.
Then, the Forced Operation will stop immediately and it will go into the Forced F-Defrost.
When it starts the Forced F-Defrost, the temperature LED Lamps indicating 3℃, 5℃ and 7℃ will be on
showing that it is on the Forced F-Defrost.
2-2) At this time, it sends out "Beeping" sound for 3 seconds. This alarm sound repeats 0.75 sec On and 0.25
sec Off which keeps on until the Forced F-Defrost finishes.
3) Test Cancellation Mode
3-1) When turning the display panel into the Test mode and pressing the any button once more during the
Forced F-Defrost, the Forced F-Defrost will be cancelled and it will go back to the normal operation.
Also, when the unit is plugged out and in again, the Test mode is to be deactivated.
[Note] Models with the Rotary Switch operate the same as the above with the Forced Defrost Mode on.
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