r/Deye

I’m still having issues understanding how to use the Deye firmware — it seems quite confusing.

I think I have a basic idea of what I want to achieve, but I’m not sure whether the issue is with my setup or the software itself.

My goal is to:

• Charge the battery primarily from solar each day.
• Top up the battery from the grid when tariffs are low.
• From 5:30pm, discharge/sell energy down to around 25% battery capacity until 7:30pm, when the peak feed-in tariff applies.

The problem starts when the battery reaches 25% before 7:30pm. Instead of continuing to power the house from the battery, the system immediately starts drawing power from the grid.

The reason I want the battery to stop at 25% is so there’s still enough stored energy to run the house overnight and into the next day before repeating the cycle again.

What’s also frustrating is having to make changes online and then wait for the data and settings to update. There really should be a basic local web interface on the inverter itself, or at least a much better app experience.

I’m considering trying Home Assistant to see if it provides better control over the inverter. However, to me, that suggests the product itself is lacking. It’s disappointing that these limitations only become obvious after the system has already been installed.

Hi all, I have a 6kw hybrid inverter setup, after I upgraded from a grid tie to a hybrid with net metering setup, I've been trying to study how this whole PV system works and optimize my setup, like rewiring or adding circuits for non essential use, and digging through the deye setup. I found out that the way the system was wired is very different from the manual, particularly the CT was only reading incoming power from grid and the inverter grid port has a different line to the rec meter. From what I understand, the CT should be able to read both direction, but to do that for my setup I have to put it between the main meter and rec meter, but that wire where the CT should be placed is enclosed and sealed by the DU on a pole outside our house about 20 meters away.

I hope I have described my setup clear enough to visualize.

So I have been researching other ways to get a proper CT reading and stumbled on using 2 single phase smart meter like Eastron SDM120CT, one reading export line and the other reading the import line then combine the reading through modbus. Well actually just google ai result describing it. So I'm here seeking a more valid answer. Is this possible or are there other ways I can explore?

Thanks in advance.

https://imgur.com/a/RMr47Sv

edit: added diagram : excluded panel and battery

- you can see in the image, the CT can only read consumption from the grid. As of now, the inverter is set to Zero Export to Load with "Solar Sell" enabled. My understanding is that the CT should be placed where it can read both import and export direction, so I can use Zero Export to CT and should be able to power non-essentials from PV/Battery if needed as long as there is power from grid. For example during night time, so it's not consuming from grid. I understand that if power from grid is down, non-essential load is also down.