Deye/Sunsync inverter - battery full, still drawing from grid

[kolek]

Hooked up Deye to grid for the first time, now the only way I can get inverter to draw from battery is by physically disconnecting the connection to the grid.
I am NOT selling power to the grid, the only time I want to pull from the grid is when the battery is dead.

Here are my settings:



Please help!

 

[Oldphile]

Check Time of Use. With the settings as you've shown the Deye will power the loads from the battery up to 8000 watts and will stop powering from battery when the battery falls to 49.0V.

 

[kolek]

as you've shown the Deye will power the loads from the battery up to 8000 watts

It powered zero loads from battery today AFAIK

and will stop powering from battery when the battery falls to 49.0V

It wasn't powering the loads from battery today when the battery was at 53V+. I had to disconnect grid to get it to start using the battery.

 

[kolek]

Check Time of Use

I don't want to charge based on a time schedule. I want to only switch to grid when the battery is dead.

 

[kolek]

There's this similar thread here, but no obvious clues to a solution:

Deye Inverter drawing from grid

Hi, I have installed 2 x 12kVa 3 phase Deye inverters connected in parallel. Even though I have ample solar genration, it still draws power from the grid. Load first is enabled. I would really appreciate any advice on minimising the grid usage. Thank you.

diysolarforum.com

 

[kolek]

Calling @LydMekk @robby @Sean123 @XO4001 in case any of you know

 

[1201]

There's this similar thread here, but no obvious clues to a solution:

Deye Inverter drawing from grid

Hi, I have installed 2 x 12kVa 3 phase Deye inverters connected in parallel. Even though I have ample solar genration, it still draws power from the grid. Load first is enabled. I would really appreciate any advice on minimising the grid usage. Thank you.

diysolarforum.com

He posted the solution at the end

 

[kolek]

He posted the solution at the end

I don't understand the solution he posted, and "smartload" is not in the menus

 

[kolek]

So far I found this:
"Max. sell power: Allowed the maximum output power to flow to grid."

Tried setting this to 0.

Didn't solve the problem.

Here's what happened:
Before changing the setting, JK BMS showed battery was at 52.74V and load was -11.4A, showing that I was properly pulling from the battery.
As soon as I turned the grid back on, the load dropped to zero, meaning it stopped pulling from the battery and started pulling power from the grid, and the battery started charging.
This is exactly the problem i'm running into.

 

[kolek]

the

Found "Smart load" is on the generator menu. Currently that is using the default setting which is:
"Generator Input"
Rated power: 8000W

 

[kolek]

I was previously using the default "Generator input"
I'm going to try switching to "Smartload output" and test if that fixes the problem.

 

[kolek]

Switching to "smartload output" did not solve the problem.

 

[Hedges]

"SBU" or other modes?

HOW DO I FORCE DEYE 12KW HYBRID INVERTER TO WORK IN SBU MODE ??????

Hey guys i have 9kw of solar panels and 10kwh 51.2v 200ah battery. Live in area with a lof of sun, but there are some cloudy days. I had before powmr inverter 3 phase, and all day would be working in sbu mode untill late night, it wouldnt spend any energy during daytime from local electricity...

diysolarforum.com

SNRE SBU

I'm curious if the SNRE all in one inverter "hybrid off grid" have dual supply to load function on SBU setting. I mean both PV and battery supplies the load when PV power is not enough, or does it just switch modes. I'm contemplating of upgrading my old off-grid inverter.

diysolarforum.com

 

[1201]

Switching to "smartload output" did not solve the problem.

Why do you have"gen signal" checked, out of curiosity

 

[kolek]

"SBU" or other modes?

Wow this comment is shocking:

"Can deye do same ? I read so.many posts that it cannot prioritize solar , battery and as last resort grid when battery is depleted . Thia is very dissapointing even powmr , easun and all these cheap chinese inverters do this without any issues ? And deye who is double the.price cannot do it . Is this truth that it cannot work in sbu mode ?"

So it looks like I have to figure out how to use this "TOU" scheduling function.

 

[kolek]

Does anyone have working TOU settings that allows grid to only be used if the battery reaches a specified voltage? This "TOU" feature is not particularly intuitive and I'm not using "PowerView"

 

[kolek]

First off, I assume TOU is activated by the TOU checkbox at the top, and if you don't have that checked, nothing in TOU settings are active?

 

[kolek]

Ideally I'd like something like this:
At any time of day:
if the battery reaches 49.6V, switch to grid, but do NOT charge the battery from grid.
I only want to charge the batteries from PV.
Then if the battery goes above 51.2V, switch back to battery.

 

[Hedges]

How about switch to grid and charge from grid when it hits 10%, disconnect from grid above 15%? (or some other numbers.)
Same difference, except it cycles.

 

[kolek]

Ok, just ran a test whereby I activated TOU, but left the default settings which are all 49V. I am way above 49V at the moment, so nothing should happen. Switched grid connection back on, and immediately the system stopped drawing from battery and started drawing from grid. Exactly what I don't want.

Isn't 49V the trigger if every option in TOU is set to 49V? If you're above 49V, it shouldn't do anything, should it?