sounds like dying batteries, but lets get more info.
6 modules wired in parallel ?
combiner box ?
distance from array to controller/batteries ?
wire size used over that distance?
is it the prostar with the meter?
how old are the batteries?
any shading on the array?
sorry for all the questions, but that is usually how the trouble shooting goes.
cheers,
james
altE staff
Yes, the PV's are wired in Parallel, about 3ft of wire between each.
No combiner box, basically using a daisy chain configuration on the array.
about 15ft from the last PV in the array to the Prostar, maybe 20ft tops.
I'm using the PS-30 with no meter.
The batteries are about 2yrs old, but when I put them on our smart charger, they test good.
No shading at all on the array, on a cloudless day, this time of year, I'll get oblique sun starting at about 7:30am, and it is virtually direct from around 10:30 to about 3pm.
Odd thing though. This morning, right before dawn, I went out and checked on the system. At the PS-30, the battery terminals read out at 12.17v, (Should be enough to run the inverter) the Solar term read out at about 8.03v, just ambient light, but the load read less than 2v, like 1.7v ish. So, I turned off the load and the voltage on the load terminals quickly started to shoot up towards the voltage of the batteries. I'm stumped.
Thanks for all your help
