Sometimes the drain in the freezer can block, this will cause the water stuck in there to freeze over and seal it effectively. This can cause ice to build up on the bottom of the freezer and on the fan too, if the fan is covered in ice it will be noticeably louder and will also run for longer periods of time as it is trying to cool the unit.
This can be fixed by defrosting the fridge for a full 24 hours as this will allow the ice to melt and unblock the drain.
Please try doing a full defrost as this will likely fix the issue and avoid fees being charged for a technician visit if this is found to be the fault.
If the issue still persists please contact our customer service team or fill in a warranty form through our website and we will be more than happy to assist!
Please note: Warranties do not cover maintenance, installation or user errors as per our Warranty T's & C's, fee's will be on-charged.