diy solar

diy solar

Recent content by kts78

  1. K

    Problems with Batteries Low Cell Voltage - happened to four different batteries.

    Sorry I'm not on all the time. Yes my problem was my inverter was staying on float voltage and not charging high enough to balance cells. I had plenty of solar, but it would start limiting production saying batteries were fully charged when they were not. If I raised the bulk charge voltage...
  2. K

    Problems with Batteries Low Cell Voltage - happened to four different batteries.

    I had a similar problem with this (2 trophy 220ah) in the first 2 months my soc was dropping, the solution for me was to raise the float voltage so it would hit the equalization mode (kinda what Eggo was saying). Not sure if I was not draining them enough but the inverter usually just stayed in...
  3. K

    Sunny Boy and Sunny Island

    Hey just to let you know the Lorentz sensor is working perfectly. I have it connected directly to the vfd drives on our well pumps, then adjusted it so they only can come on if the solar is producing more than what they consume. We may eventually hook more loads but for now we have more than...
  4. K

    SMA Sunny Island and Sunny boy problem

    Yes, I had done that before, but had to reset all the cel voltages
  5. K

    SMA Sunny Island and Sunny boy problem

    I switched it to 46v yesterday morning. Looks like it will work. I started all my loads until SB had solar at full production, then shut everything off- all worked like it is supposed to. I did have to raise my charge voltage to the max of what Trophy recommends for their batteries. We will...
  6. K

    SMA Sunny Island and Sunny boy problem

    it starts to balance at 55v, but once it hits 55.2 the voltage climbs really fast. going to try changing system to 46v see what that does. All the other errors I have gotten are caused by the overvoltage- then inverter trying to restart.
  7. K

    SMA Sunny Island and Sunny boy problem

    thanks, I am finally on site and have some time to play with the settings
  8. K

    SMA Sunny Island and Sunny boy problem

    Battery voltage runs 54.25-55.70
  9. K

    SMA Sunny Island and Sunny boy problem

    yea, I couldn't find 369 in the manual either. Open loop. Batteries are Trophy 220amp. I will have it reconnected with internet next week, it should allow me to see what's going on with the SB. Previously it was always ramping down input. I have noticed if the batteries are not at 100% I...
  10. K

    SMA Sunny Island and Sunny boy problem

    I am looking for some help with an off grid SMA system on a school (need it right by mid Aug). 2 6048's with a SB6.0 to charge batteries (trophy lifepo4). Has been running since May and had a few bugs initially but has been working great. This week it started shutting off and restarting --...
  11. K

    Sunny Boy and Sunny Island

    Sorry I spelled it wrong- it is a Lorentz sun switch. https://www.solaris-store.com/telechargement/notice/notice_GE4000795.pdf
  12. K

    Sunny Boy and Sunny Island

    Time will tell, this is for a school so the reality is the batteries get used very little (nobody is there at night), well pumps have a Lorenz switch so they can only run when the sun is producing enough energy to run them. Have water storage on the roof if needed. Trophy did not want the...
  13. K

    Sunny Boy and Sunny Island

    Just wanted to follow up. I left it go another day and the panels kicked in 52.5V. Changed the float voltage to 2.27v and the problem seems to be resolved- batteries now at 99%-100% SOC and panels come on if I turn on any load. Thanks Hedges for your help!
  14. K

    Sunny Boy and Sunny Island

    ok, I think that might be it. I had to set the charge voltage because it would trip the BMS with an over voltage error, but I didn't look at the float. They wanted 56.8 max on the charge, 53-54.5 for float. I ran out of time and didn't find where to set the float. Thanks a lot for the help.
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