Anyone know where I can get a user manual for a Servis 7065 fridge freezer which we inherited when we moved house pls. I have no idea what any of the lights are for, except for the obvious power light, or what the small 'key' at the back of the fridge is for. Also some defrosting advice would be good as I have had a frost free model for the last 15 years until moving house. Any help would be much appreciated. Thanks.