replace the no frost probe.although the probe is freezer related,it regulates the overtemp in the fridge section.it simply plugs onto the pcb and runs down a section in the f/f .two to choose from so make sure you have the sn when ordering.same probes different connectors.apart from that problem is everything else ok,no error code on display,no intermittent warning alarm?.if no then the probe is yer problem.you can replace it yourself and it costs around 20 quidish.
Mr Freeeze, December 2011