Display shows OF OF (demo mode); ice maker does not produce ice because cooling is disabled.

Safety first: No internal repair is needed; this is a control setting.

Steps to exit demo mode (typical Samsung sequence):

• On many models, press and hold Freezer and Alarm (or Power Freeze + Freezer) buttons together for 3–5 seconds until a chime sounds and the display changes.
• Consult the user manual for your exact model's demo mode exit sequence if this does not work.
• Once demo mode is off, verify that both refrigerator and freezer temperatures are set correctly (e.g., 37°F / 3°C fridge, 0°F / -18°C freezer).
• Allow 12–24 hours for the unit to cool fully and for the ice maker to resume production.