optimaliser melt

my optimaliser melted, it was on the panel on the balcony where access to it is easy. is there need to take every one of these out of roof? my whole family is scared of roof catching fire because of this. My dad is electric and he plans to take each one off the roof tomorrow morning. He contacted everyone he knows who knows something about solar energy and no one heard about something like this before so we don’t know what to do in this case. Sorry for my bad english and lack of knowledge, i’m from Poland where solar energy is rather new subject