XW only works during the daytime
I just installed a Xantrex 6048 and two xw 60 charge controllers fed by 30 Sun 205 watt panels. The charge controllers are charging 24 Rolls S-530 batteries which make up a 48 volt battery bank with a 1200ah capacity. There is no mains supply (were free from the man)! The system turned on without a hitch when we first flipped the switch but as soon as night fell I got an under voltage warning and the system shuts down with the only draw being from a single 15 watt CFL and the draw of the inverter. When this happened I checked the batteries with my hydrometer and the batteries were reading a consistent 1225-1250. The following day I ran an equalization on the batteries which only took 35 minutes before the inverter went back into a float charge. I can run the whole house during the day with no problem but as soon as the sun sets we all have to go to bed! Any thoughts on what might be going on?
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