Growatt exporting when I don’t want it to!

[Rikster23]

Hi All,

I have been searching for ages and cannot work out how to manage this.

I have a Growatt inverter, solar array and batteries.

I am trying to stop the system exporting energy from the batteries to the grid during the day, but I simply cannot seem to get it to not export some energy.

I have turned all 3 modes off, I have turned Load First, no discharge on and I have gone into advanced settings, changed “Register” to 201 and “Value” to 1 as I found something that suggested this would prohibit export… but it’s still doing it. And it’s driving me crazy.

Am I being really thick and missing something obvious?

Any help or suggestions would be much appreciated.

Many thanks

Rik

 

[Zapper77]

Model number? User manual would be nice.

Are the CT on the correct leg and point the correct direction?

 

[Rikster23]

Sorry, it the:

Growatt SPA3000TL AC-coupled Controller​

Yes, the CT clamps are correct, it’s all working, it’s just that it keeps exporting 0.1-0.5 kw. When it’s sunny it exports fine, overnight the grid happily charges the battery on the cheap rate… everything is fine, except it won’t stop exporting just a little from the battery… which over the course of the day means the battery drains before it should, meaning I’m them onto the grid as it gets dark at 4pm ish at the moment.

Cheers

Rik

 

[Zapper77]

Have you adjusted the CT off set?

 

[SeaGal]

Hi... sounds like a CT clamp issue, which can (it seems) be resolved using a dedicated meter. See here...

Growatt constant draw from the grid

Hi, New to the whole Solar PV life, I tried searching but couldn't find anything that quite matched my question so I hope this is not a duplicate. Recently had a Growatt SPH3000 inverter installed at my home the in roofspace along with 10x panels for about 4.2KwH generation, EPS for...

diysolarforum.com

and also this thread...

CT Inaccuracies?

I have a new Growatt system - SPH5000 +GBLI 6532, but the load is being reported inaccurately, and the battery is not supplying power overnight on a light load (200W or less). There is about 15 metres cat5 from the inverter to the CT - could the length be an issue? Or could it be a poor...

diysolarforum.com

 

[SeaGal]

Have you adjusted the CT off set?

if that's possible on the growatt... see

CT Inaccuracies?

I have a new Growatt system - SPH5000 +GBLI 6532, but the load is being reported inaccurately, and the battery is not supplying power overnight on a light load (200W or less). There is about 15 metres cat5 from the inverter to the CT - could the length be an issue? Or could it be a poor...

diysolarforum.com

 

[Zapper77]

if that's possible on the growatt... see

CT Inaccuracies?

I have a new Growatt system - SPH5000 +GBLI 6532, but the load is being reported inaccurately, and the battery is not supplying power overnight on a light load (200W or less). There is about 15 metres cat5 from the inverter to the CT - could the length be an issue? Or could it be a poor...

diysolarforum.com

Why do I need to see. It's not my problem. ?

 

[SeaGal]

Why do I need to see. It's not my problem.

LOL... the comment was aimed at the OP! Soz for confusion ?

 

[Zapper77]

LOL... the comment was aimed at the OP! Soz for confusion ?

I know...I forgot to include the visual aid. ??