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To confirm is the freezer operational, the display is working and the light comes on when you open the left hand door?
With regard to the fridge (right hand side) does the light come on when you open the door, or does it look like the fridge has lost all power?
Assuming the freezer compartment is fully functional it could be you have inadvertently turned off the fridge.
To check this please refer to the attached image and press and hold button C (5 seconds), and see if icon G appears on the display.