It looks like the fridge thermostat is the culprit. I am on my third one in 6 years, and the current one needs to be turned to maximum. Then it just about works, i.e. it is clearly on its way out. The hysterisis (the difference between switching on and off) is also too great. I am about to send an e-mail to Danfoss, because this should not happen. Our family has only ever had 2 thermostats fail in 40 years, one being in a Siemens fridge, the other being a Bauknecht fridge freezer. My previous fridge freezer (Husqvarna) never needed a thermostat in its 15 year lifecycle.
Replacing the thermostat in a Scandinova is not particularly difficult if you what you are doing, and it should not take an engineer more than 15-20 minutes.
Danfoss is normally a highly regarded Danish company, but the fridge thermostat for my Scandinova FF7054D fridge freezer is truly awful, and its adjustment range is far too small, basically 5 and 7, even when new.
Maybe you should also send an e-mail to Danfoss.
They cost about £25-30 on the internet.
Regards
Manfred, November 2008