Zanussi fridge freezer wont stop making a whirring noise

Seems compressor getting trip off continually .kindly check thermostat setting fan motor and input power supply

more than likely the defroster inside the freezer has gone bad. This defroster is located in the space between the fridge and freezer and activates to defrost the freezer and stop build up of ice in the freezer.. If it is bad the freezer will not keep the fridge nor freezer cold.
Dave

Replace the evaporator fan motor.

no, its probably weak capacitors which provide power to switch the relay. Take the control board out and ask a friendly TV repair tech to change the capacitors

what you are hearing is the overload kicking in and out. which means bad start relay /bad capacitor/low voltage/bad overload/bad compressor.you can buy a 3in1 to eliminate all but the compressor. and the voltage check them first.

Yes, I think you have a problem that can be fixed easily by a repair technician. The sound as you described it could have come from the air circulation fan in the freezer compartment striking ice. As the ice builds up it could have stopped the fan from rotating and air flow to the refrigerator compartment.

What you may be noticing is the system going through a defrost cycle. Check the time of the day that you notice this event. If it happens at the same times it could be a normal situation if at all other times normal temperatures are being maintained. A popping sound can be caused by thermal expansion during the defrost.

fully defrost it 48 hrs with the doors open and that can often cure it.

Please check the fallowing:
-Loose flooring or floor not firm.
- Cabinet not level.
- Tubing in contact with cabinet, other tubing or other metal.
- Drip tray vibrating.
- Fan hitting another part or worn fan motor bearings. Unplug the unit and rotate fan manually by your finger.
- Compressor mounting grommets worn or missing; mounting hardware loose or missing.
- Free or loose parts causing or allowing noise during operation
- Check compressor it may contact with tubing or other parts.
- Check the body of your unit is not touching the wall or other object

compressor may be locked up