Thanks for that advice. I'm at work at present but will try that when I get back. Is there any way I can get back to you later if I need further advice once I've taken the back off? Any idea why the fridge would still be cold but not the freezer? Or rather why the freezer is not colder than the fridge?
Sorry to bother you again. I tried to remove the back panel but could only get the top half off to reveal the fan (which was clear of ice); I couldn't get the rest off; there appear to be two screws set very deeply inside the molding. Would I need to remove these? I used a hair dryer on the fan and wherever I could and turned up the heating in the utility room where it sits and it does seem to have improved matters but it's still not down to temperature. Any hints on removing that back panel?
Hi Daniel thanks for the further info. Problem seems to have been sorted but will monitor it and try removing the back panel again if it recurs.