Johnnysunrise
New Member
Recently swapped out from lead acid to lithium batteries, which should have been a quick and easy swap, but through a misconfiguration on my part I bottemed out the BMS. Still should not be a real issue. What we are seeing now, is that the solar charging seems to top out at 1W, or essentially nothing.
So far we have done a factory reset of the Growatt inverter and reconfigured all the parameters, but still no luck with the solar charging.
A Growatt tech suggested a firmware update, but I am unable to get the Windows 11 laptop and the ISP software he provided to communicate with the Growatt inverter.
Instructions and firmware from Growatt:
Factory reset instructions - https://drive.google.com/file/d/1wLJGblVADiF7X8Mk6dkMKqaMz3lpjcQz/view?usp=drive_link
FW link - https://drive.google.com/file/d/18s3iAq8eBRhn9xhie4L6z8dKx0WRpdWE/view?usp=drive_link
Firmware includes procedure, windows drivers, ISP write tool, and fw file. You will need a windows laptop with windows 7, 10, or 11, and a USBa to USBb cable.
Any suggestions on either getting the Growatt SPF 3000TL LVM firmware updated, or has anyone seen a problem where the solar charging appears to essentially not be working?
Tech:
- Growatt SPF 3000TL LVM 24V - current firmware read from Solar-Assistant as 502.10
- Q.Cell 395W panels in a 2s2p setup - Full sun I see about 75-81V from the panels on the Growatt, but the current stays at zero
- Vothium 200ah 24V battery
- Solar-assistant running on a RPi connected to the Growatt via USB
So far we have done a factory reset of the Growatt inverter and reconfigured all the parameters, but still no luck with the solar charging.
A Growatt tech suggested a firmware update, but I am unable to get the Windows 11 laptop and the ISP software he provided to communicate with the Growatt inverter.
Instructions and firmware from Growatt:
Factory reset instructions - https://drive.google.com/file/d/1wLJGblVADiF7X8Mk6dkMKqaMz3lpjcQz/view?usp=drive_link
FW link - https://drive.google.com/file/d/18s3iAq8eBRhn9xhie4L6z8dKx0WRpdWE/view?usp=drive_link
Firmware includes procedure, windows drivers, ISP write tool, and fw file. You will need a windows laptop with windows 7, 10, or 11, and a USBa to USBb cable.
Any suggestions on either getting the Growatt SPF 3000TL LVM firmware updated, or has anyone seen a problem where the solar charging appears to essentially not be working?
Tech:
- Growatt SPF 3000TL LVM 24V - current firmware read from Solar-Assistant as 502.10
- Q.Cell 395W panels in a 2s2p setup - Full sun I see about 75-81V from the panels on the Growatt, but the current stays at zero
- Vothium 200ah 24V battery
- Solar-assistant running on a RPi connected to the Growatt via USB