wonder if anyone can give me any information. i have a samsung american style fridge/freezer. on the door display its saying filter in red whilst the fridge is icing up really badly. coupled with that my electricity cost has rocketed - would this be the reason? could it be the thermostat maybe and would this be too expensive to fix? sorry to have to ask but i live alone so dont have a clue. thanks for any information anyone can give me.