Model – Zanussi ZX99/5S1
Product No – 926405933
Serial No – 33700408
The above fridge/freezer is about 5 1/2 years old. Last year the fridge stopped getting cold and I called an engineer out who said it needed defrosting which was done and then it worked perfectly for about seven months. in the 1st week of January it happened again so I defrosted it and it worked fine but only for a month. Defrosted again last Sunday but although it worked fine again, last night I noticed it wasn’t as cold as it should be.
Does it need a new defrost sensor or regassing or is it something more serious?