What should I do if the temperature display is blinking?
A blinking display can occur when the freezer or fridge temperature rises due to frequent door openings or placing large amounts of warm food inside, and it will stop once temperatures return to normal. If the blinking continues, try unplugging the appliance, waiting around 10 minutes, and then plugging it back in. If there is a communication error between the Display and Main Controller and blinking continues for a long period, contact a Samsung Electronics Service Center. (Page 19)
From the official Samsung Rf263beaesr AA manual, page 19
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