Hi all,

Can someone explain what I need to change?

My inverter is pulling from the grid when I have "limit to load only" unticked

  

    

 

but when I tick "limit to load only" it starts pulling from the PV and only pulls the grid trickle feed from the grid

 

 

Ticking and unticking priority load didn't have an influence, doesn't look like altering settings on the timer did either.

Any advice?

(btw this is a new install and I don't have much confidence in the installers knowledge of how Sunsynk's work)

 

 

Edited December 3, 20214 yr by eagerllama
correction

Is it possible that its as simple as the CT coil being connected at the wrong place?

 

My settings for my Deye (aka Sunsynk) inverter does have the Prioritise Load box ticked and system pulls from solar and battery when available.

Your CT coil is most likely in the wrong place 🤔

3 hours ago, eagerllama said:

Change the SOC of all lines to 20- 40% so you utilize your battery better. You are using grid to charge the battery fully from 1am which makes no sense. I would personally remove all the grid charge ticks . 

  

You should be seeing the 20W trickle feed on the ct coil in this image , if you switch on an non essential item in the house you should see it on the ct coils reading , if not its not installed correctly.

Edit : you should be seeing the 1100 odd watts going to the UPS on the ct coil in this picture . So your CT coil is definitely  not in the right place /connected wrong.

    

 

Edited December 3, 20214 yr by Nexuss

16 minutes ago, MdF said:

My settings for my Deye (aka Sunsynk) inverter does have the Prioritise Load box ticked and system pulls from solar and battery when available.

Your CT coil is most likely in the wrong place 🤔

Thanks!

15 minutes ago, Nexuss said:

 

Thanks! Your explanation on the CT makes sense, will go do some inspection on the how the wires flow and see if I can pick it up.
I'll update the SOC settings, the idea was to make sure we have some juice in case of an outage (happens once every 2 weeks or so here...) but in hindsight we should manage with 40% SOC to start the day off with, so will maybe let it drop to 20% overnight and charge with grid to 40% from 5-6am

So this is how the new little DB is wired.

A and B go to the original DB, though I can't see which connects where because the same type of cabling was used in trunking which runs behind a cupboard

There's also wires running from the PV fuse to the MPPT which I didnt draw in

If I look at this diagram then the only other AC in position seems to be A?

That does not seem right . The CT coil needs to be on the main supply live wire(probably inside old DB ) ,so it can feed the non essentials.

16 hours ago, Nexuss said:

That does not seem right . The CT coil needs to be on the main supply live wire(probably inside old DB ) ,so it can feed the non essentials.

Makes sense!