I've had the 712 in my system for several years, working fine. a month or two ago, I noticed the charging current never went to zero. I finally got around to zeroing it - turned off inverter/charger, disconnected power, turned off solar, shut off main batter switch (I know some is redundant), and have a B to B between house and chassis that is off. I zero the bmv (item 9) more than once. Go right to bmv current and it shows 14 amps charging. I've also done a factory reset on the bmv - no difference. Time for a new BMV?