The Zanussi ZT 56/2 R Refrigerator has some known problems that occur often. Here are some easy to do solutions for the problems or error codes your Zanussi might be giving you.
The appliance is not receiving power.
The interior light bulb is not functioning.
The temperature is not within the desired range.
The compressor is operating non-stop, indicating a potential issue with cooling.
Frost and ice accumulation is greater than normal.
The appliance is generating unusual sounds.