Hi Grace, firstly changing your fuse will make no difference whatsoever. You probably have a bell box tamper, You can either isolate it yourself by means of phoning me and ill talk you through it, or you can call a local company out and probably get ripped off.
Yes you can happily leave it like it is, but if you do, please ensure your insurance isnt affected by not switching your alarm on.
regards
Nick 07842 480037 Burglar alarm installer and service engineer with 25 years experience
Nick
January 2010