First thank you anyone who gives me some assistance on this, i am definitely out of my normal wheelhouse. I apologize in advance as i may dump too much info, but i feel its easier to go over with too much info than asking questions and waiting on replies.
Setup
Newly setup Growatt 3000 48v inverter. 4x SOK 100ah batteries, 8X 325w solar panels. Completely off grid.
Panels were wired as 2 parallel series for 160v in an ideal scenario.
Base testing
I had put the setup together initial without the solar panels, and was using a generator to charge the batteries and power our off grid RV.
Everything was working as expected at that point. We finished the solar wiring and i cycled the breaker and tested.
It worked as i had thought, the display showed power porting to the battery and output, charging at 141v.
I watched it charge the batteries for a short time, left for the weekend and came back to check it on Monday. I shut down the breaker to output to ensure there was no power drain while we were away. To my disappointment the battery voltage dipped enough that the controller shut down, and the batteries BMS went into protection mode. Im still not certain what managed to drain them as there was no draw present besides the inverter itself.
I split the batteries up, charged them back up and reconnected them to the system and brought it back online to inspect.
Main problem
Now it would not show the solar would charge the batteries. Had a nominal voltage of 51v, and it would only output the battery to draw, would not recharge.
I tried switching some of the settings, which were not changed from the time it was charging, with no change. I was able to fire the generator back up and it began charging the batteries as i would expect.
Frustrated i went to work and saw that the growatt wanted to see 150v of solar to "startup" the system so i rewired it to 6 panels in a series to see 190v with my overcast sunset for testing, and it still would not charge my batteries.
So im stumped and frustrated.
Growatt settings
001 - utility ( i tried sbu as well- no change)
002 60a
003 - generator
004 dl5 default
005 battery us2
006 dl5 default
007 same
008 120v
009 60
10 battery 4
11 30a
12 46v
13 54 v
13 snu ( also tried solar only, no change)
16 on
18 dl5
19 56.2
20 54v
21 42v
Day 1 of testing
Generator running charging batteries
Solar online, skipping battery
Thank you again for any input. I would love for someone to call me dumb and point out the mistake im making
Setup
Newly setup Growatt 3000 48v inverter. 4x SOK 100ah batteries, 8X 325w solar panels. Completely off grid.
Panels were wired as 2 parallel series for 160v in an ideal scenario.
Base testing
I had put the setup together initial without the solar panels, and was using a generator to charge the batteries and power our off grid RV.
Everything was working as expected at that point. We finished the solar wiring and i cycled the breaker and tested.
It worked as i had thought, the display showed power porting to the battery and output, charging at 141v.
I watched it charge the batteries for a short time, left for the weekend and came back to check it on Monday. I shut down the breaker to output to ensure there was no power drain while we were away. To my disappointment the battery voltage dipped enough that the controller shut down, and the batteries BMS went into protection mode. Im still not certain what managed to drain them as there was no draw present besides the inverter itself.
I split the batteries up, charged them back up and reconnected them to the system and brought it back online to inspect.
Main problem
Now it would not show the solar would charge the batteries. Had a nominal voltage of 51v, and it would only output the battery to draw, would not recharge.
I tried switching some of the settings, which were not changed from the time it was charging, with no change. I was able to fire the generator back up and it began charging the batteries as i would expect.
Frustrated i went to work and saw that the growatt wanted to see 150v of solar to "startup" the system so i rewired it to 6 panels in a series to see 190v with my overcast sunset for testing, and it still would not charge my batteries.
So im stumped and frustrated.
Growatt settings
001 - utility ( i tried sbu as well- no change)
002 60a
003 - generator
004 dl5 default
005 battery us2
006 dl5 default
007 same
008 120v
009 60
10 battery 4
11 30a
12 46v
13 54 v
13 snu ( also tried solar only, no change)
16 on
18 dl5
19 56.2
20 54v
21 42v
Day 1 of testing
Generator running charging batteries
Solar online, skipping battery
Thank you again for any input. I would love for someone to call me dumb and point out the mistake im making