Fridge is frosting up
1.
The fridge temperature setting maybe set too high. Lower the temperature setting for 24 hours, then check the fridge again.
For more information, see the Fridge temperature settings topic.
2.
Check the fridge door seals are clean and not damaged, damaged door seals could allow warm air to get in.
3.
The fridge door maybe being left open for long periods of time causing the fridge to frost up.