Samsung RF197** - Manual (Page 6)

Names and basic functions
If you want to make ice faster (controlling the Power Freeze)
Press the Power Freeze Button. (Refer to the picture.)
- The Power Freeze light on the display comes on (see the arrow mark)
and this function begins to operate regardless of the set freezer
temperature.
Press the Power Freeze Button again to cancel this function.
- The light goes off and it operates at the set freezer temperature again.
- The Power Freeze function operates for 2 and a half hours regardless of the set temperature.
If you want to speed up the cooling in the Fridge (Power cool)
Press the Power cool Button. (Refer to the picture.)
- The Power cool light on the display comes on (see the arrow mark)
and this function begins to operate regardless of the set fridge
temperature.
Press the Power cool Button again to cancel this function.
- The light goes off and it operates at the set fridge temperature again.
- The Power Cool function operates for 2 and a half hours regardless of the set temperature.
Cooling off Mode (“OF & OF” code on the display)
This function is for store display refrigerators. It is not for customer use.
If the power is turned off and then back on when Cooling off mode is set to on, Cooling off mode will remain on.
In Cooling Off Mode, the refrigerator works but doesn’t make cool air.
To cancel this mode, press the Power Freeze and Freezer buttons at the same time for 3 seconds until a
“Ding-dong” sound is heard. The unit will now cool.
CAUTION
Cooling Off
mode