My defy F640 is starting to make a terrible noise…

for Defy Appliances Refrigerator F640

My defy F640 is starting to make a terrible noise @ any given time & my fridge is starting to have thick layer of built-up ice

Liebherr Refrigerator not known
reguleting a premium biofresh fridge
HI i have just purchased a used biofresh fridge,there is no manual for it,so i am hoping i can get …
Zanussi Refrigerator 814AA68
manual
i cant find the model number, i need to get a manual to set the right temp on the fridge and freezer…
Hotpoint Refrigerator HSM25GFRSA
WHERE IS THE FILTER LOCATED?
WHERE IS THE FILTER LOCATED?
KitchenAid Refrigerator KTRP18KDAL
FREEZER IS WORKING BUT THE BOTTOM REFRIGERATOR IS
FREEZER IS WORKING BUT THE BOTTOM REFRIGERATOR IS NOT COOLING.
Zanussi Refrigerator nbu1115y
i need to get a user manual but cant find the code
i need to get a user manual but cant find the code or product number