The Zanussi ZRT 6656 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 electrical power.
The temperature inside the appliance is higher than desired.
The temperature inside the appliance is lower than desired.
There is an accumulation of frost and ice inside the appliance.
The appliance is making more noise than usual.
Water is accumulating under the salad drawer.