The Zanussi ZRT 6647 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. This could be due to a power cut, a blown fuse, or the thermostat control knob being set incorrectly.
The appliance's internal temperature is higher than desired, possibly due to the thermostat setting or ambient conditions.
The internal temperature is lower than needed, which may affect the preservation of certain foods.
Excessive frost and ice accumulation inside the appliance can hinder its performance.
The appliance is making more noise than usual, which could be due to an imbalance or obstruction.
Water accumulation under the salad drawer indicates improper drainage or temperature settings.