Thank you so much for this post! Our fire alarm system is hardwired with our alarm system, and the whole darn thing goes off randomly to the point that we can’t even use our alarm system (and haven’t in a few years). I had someone come out and check it from the company that services it, and they couldn’t “duplicate the problem” either time, so they couldn’t fix it. The only reason that I have the system at all is because it lowers our homeowners’ insurance. It’s totally useless, because I can’t enable the alarm system at all, or the stupid fire alarm will randomly go off. I have to leave it with the error code on there. I’m not sure what to do at this point except to tell them to remove the entire system and shove it if they can’t figure it out. This issue has been going on forever, and when I came looking, I found this old post and was wondering if you had made any progress with your situation?