Forum Discussion

ewarnerusa's avatar
ewarnerusa
Nomad
May 26, 2013

Help with custom Morningstar Tristar PWM setup

Hello. Can I get some help setting up my Morningstar Tristar 45 PWM controller with custom setpoints? I have been using it at the stock 14.6V absorption voltage profile with temperature compensation...
ewarnerusa's avatar
ewarnerusa
Nomad
May 27, 2013
smkettner wrote:
I would reduce the 14.8 down to 14.2 to 14.5 zone.

Why so low? Seems like an appropriately high bulk/absorption voltage is all the rage amongst the solar gurus here.
I was still getting an inverter shut down at 14.7V, so I've dropped it down to 14.65V. I was also wrong about which stock algorithm I had been using, it was the 14.6V one.

About Technical Issues

Having RV issues? Connect with others who have been in your shoes.24,370 PostsLatest Activity: Mar 16, 2026