Re: Zanussi fridge freezer zk56/52 rf warming up (slowly)
If the compressor is running continuously, which it sounds like as you say it’s very warm, it’s either a gas leak as Penguin says or the compressor is starting to fail.
A regass will cost around £80 (ish) and is not guaranteed to last as finding the leak will be virtually impossible as invariably it will be internal.
Compressor replacement, around the £200 mark.
Probably best looking for a replacement in my opinion.
Dave.