I have a Zanussi fridge freezer ZFK47/52RF (yes, I’m really that old!)
No matter what setting I use I cannot get the freezer temperature below about -20 C.
I have tried to fine tune the temp. to -18 C but the cooling becomes unstable. Consequently to keep my food frozen at a reasonable temperature it is pumping most/all of the time which is costing me a fortune.
Is there a likely cause, is it reasonable to repair it or should I put my hand in my pocket and buy another one.
If it’s that old, you’ll have a tired compressor and maybe a loss of coolant. Not really a cost effective repair, unless you’re attached to the old girl.
There may be a build up of ice/snow on the evaperator.
Turn the appliance off and leave both doors open for 24 hours then restart the appliance.This will defrost the appliance,If the problem reoccurs then you have a defrost problem.