Smart Battery Sense started showing -460 F temperature and when I try to connect to it, it will get to 80% connection and keep restarting. The light just flashes blue. My network shows that my Smart Solar MPPT is using it for temperature and voltage readings, but it's all messed up. Was working fine until a week ago. No changes have been made and my system has been working fine for almost a year. Can't figure out how to fix it.