hi i have a fridge freezer beko as920s which just seems to keep switching off. what happens is the display reads a tempature for a very short time then that goes of leaving a number 8 on display, this then goes off this happens over and over again, then after a long i mean a long time 12 hours and more, if i press the fast freeze button it may stay on it maynot if it does it stays on for a long time causing the th ff to work correctly else everything is just no working right would love some help if anybody has come across this problem thanks……..