Add support for inverter Solarwatt Vision: SVN THREE 10KW (H3 Smart)

[thokaro]

Until now, the Vision Inverters from Solarwatt are not supported by this integration, but when i add some changes in inverter_profiles.py and types.py everything seems to works fine.

It would be great, to add the Solarwatt Vision Inverters to the compatible list.

inverter_profiles.py (after the ONE_KOMMA_FIVE section)
# Solarwatt Vision Three InverterModelProfile(InverterModel.SOLARWATT_VISION, r"^VSN THREE ([\d\.]+)KW$").add_connection_type( ConnectionType.AUX, RegisterType.HOLDING, versions={None: Inv.H3_SMART}, special_registers=H3_SMART_REGISTERS, ),

types.py (after line 57)
SOLARWATT_VISION = "VSN"

THX!!!

[Jassir-ben-Hussein]

Hi,
I would need this too.

[k-vaas]

Hi,
I also need this. After the last Update I had to manually redo the changes.
Had no issues until now with it.

[thokaro]

You can also use the fork from WiIIiam278: https://github.com/WiIIiam278/foxess_modbus/tree/feat/ivo-and-ivt

[AlterDaddler]

Works on v1.15.0 🎉

Two small edits:

1. custom_components/foxess_modbus/common/types.py
   Add a new member to the InverterModel enum (I put it right after ENPAL_IX):
   SOLARWATT_VISION = "VSN"

2. custom_components/foxess_modbus/inverter_profiles.py
   Add this entry to the _INVERTER_PROFILES_LIST (anywhere in the list works; I put it just before the closing ]):

   Solarwatt Vision (rebadged FoxESS H3 Smart)

   InverterModelProfile(InverterModel.SOLARWATT_VISION, r"^VSN THREE ([\d.]+)KW$").add_connection_type(
   ConnectionType.AUX,
   RegisterType.HOLDING,
   versions={None: Inv.H3_SMART},
   special_registers=H3_SMART_REGISTERS,
   ),

Then fully restart Home Assistant (a config reload is not enough — Python files are only re-read on restart).

A few notes:

• Check your exact model string first. On the device page mine shows VSN THREE 12KW - LAN. The integration matches the part before the - LAN/ - AUX suffix, i.e. VSN THREE 12KW. The regex ([\d.]+) captures the kW rating, so the same line works for the 10 kW / other variants too. If your inverter reports a slightly different string, adjust the regex accordingly.
• I connect via the inverter's Modbus/AUX port, hence ConnectionType.AUX — this mirrors the built-in H3 Smart profile and gives the correct H3 Smart registers (battery SoC/power, temps, lifetime energy all read fine).
• ⚠️ These are edits to the integration's own files, so HACS overwrites them on every update — you'll need to re-apply both edits after each integration update.

It would be great if the maintainer could add this profile natively so we don't have to re-patch after every update — happy to open a PR if that helps. 🙏