The Zanussi ZT 52 RL 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 internal temperature of the refrigerator is higher than the set value.
The compressor is operating without stopping, which may indicate a problem.
There is more frost and ice accumulation than expected in the appliance.
Unusual or excessive noise is coming from the appliance.
Water has accumulated under the salad bin inside the refrigerator.