smkettner wrote:
Does the inverter have a 12v switch? Try it and look for the spike one more time.
Otherwise I suppose Sal is right. Do you have a good battery to temporarily put in parallel with the others for a final check.
Might be worth a call to Morningstar.
I'm not sure what you mean by 12V switch? It has an on/off switch. It can also cause a spike that trips itself when I flip it on while the solar is charging at 14.40. The resistance in the battery thing makes sense to me. Batteries easily got us through our one night of camping so far with the furnace cranked and plenty of TV time for the kids. I could see them being compromised, but they don't seem "shot".
AFter making the videos, I switched my charging program over to using the Morningstar's HVD at 14.40V. I set my bulk/absorption setpoint at 14.35V. I do think it clamps it down faster versus, but I can force a spike at the right conditions to fault the inverter. But it seemed better than before. I can set the MSVIEW to show me when it cuts it at high voltage and it definitely actively cuts it off.
