How to prevent my FoxEss H1 injection power into the grid

[Eduard2]

Hello,

Because this is my first visit to the forum, I like to introduce myself:
I am Eduard, I live in Belgium, more precise, in Antwerp. Because I am a retired electronic engineer, my knowledge about electronics and computers is somewhat outdated.
In summer 2022 we bought 16 solar pannels, a FoxEss H1 inverter, a 10 kWh FoxEss battery.
The enterprise who installed the system is out of business since 2024.
After their bankrupt declaration I removed the internet connection from the inverter to prevent undesired access. Now, the inverter is connected to Home Assistant by means of RTU Modbus.
Home Assistant is hosted on a HAgreen. An USB to Modbus converter is used to link the inverter to the HAgreen microcontroller.

On the internet I found nice Youtube films made by Will Eccles. With the Natan Marlor FoxEss integration changing workmode, charging and discharging are working fine. Thanks for spreading this knowledge.

There is still a feature that I didn’t find. How to stop injecting to the grid during multiple hours.
Once the battery is full, solar power is injected in the grid. How can we stop that in times op negative kWh prices?

Sincerly,

Eduard

[MaterialBarracuda48]

You should be able to set export power to 0W now using the modbus from nathan.

Check in Settings -> Devices and services -> FoxESS - Modbus, and click 1 device on that box/
You should then see a list of entries that can be adjusted.

If you have this available, then you just need to build and automation to adjust your export.


Example picture showing the value you are looking for...
viewtopic.php?p=17369#p17369

[Eduard2]

Thank You very much,

I'll try that as soon as possible. Next week for sure.

Greetings,
Eduard