Looks like you need to raid the piggy bank and send that £10Ill put £10 on the Electric Car draining the battery over night because the inverter is not transitioning into battery first mode during the charging period.
Looks like you need to raid the piggy bank and send that £10Ill put £10 on the Electric Car draining the battery over night because the inverter is not transitioning into battery first mode during the charging period.
It is now, that was a strange anomoly yesterday that I haven't seen before or since.Looking at post #32, you need to be on load first, your inverter is exporting everything generated to the grid.
It should be showing load first, any excess after the load has been supported is then fed into the battery, once charged excess then goes to the grid.It is now, that was a strange anomoly yesterday that I haven't seen before or since.
I'm actually on battery first, which defaults to load first if we're outside the overnight window, right?
Yeh potentially, I’ll have to get the installers out to look at that."Round grey cable (2) enters the "six holes" input. This round grey cable goes to the CT I believe - it definitely goes in that direction and connects to a black cable which I'm pretty sure is the one that leads to the CT near the meter."
If altering the CT direction made no difference to the displayed behaviour, then I'd suggest the grey-to-black cable join is faulty, or unscreened cable has been used to extend, or the run is just too long ?
I've had to set my load-first discharge to 90%, to stop it needlessly discharging the battery today. It'll be interesting to see what it does when I turn it back to 5% when the sun goes down later.@ thfctom you are describing almost exactly same issues as I have had now for 6 months, since our battery storage was commissioned (was installed initially but it took installer a while to actually get the batteries to respond/function):
I have read a couple of threads about the ec2a.v meter that is part of our installation, but tbh I don't really understand its purpose. I did read however that installations with battery require a different version / setting of this meter type, but it goes way beyond my knowledge and understanding. Could this be relevant or just a red herring?
- Battery does not discharge in response to load
- 'Grid first/TOU discharge' discharges at 3kW regardless of load when we manually use that command (e.g. to use some power in evening if needed)
- App and web app no longer show grid import/export data (since battery was commissioned)
- Load consumption always matches solar production (which is just wrong, even did this when we were on holiday and house was empty!) - was 'normal' before battery was commissioned.
- Random but minimal battery discharge for short periods (not in line with load)
- Random o/night battery charging from grid (though AC charging is disabled)
Installer insists all is set up correctly and CT is fully functional, but he goes silent on me when I challenge on the points above, that have not changed since the battery was commissioned. It is clear however that our installation is not functioning as it is meant to.
We have Growatt 3600 hybrid inverter, PV, 2 x Growatt 6.5kW batteries (no EV charger or other complications).
All very frustrating.
@johnb2713 - thanks already for all inputs, much appreciated.
The fact that your smartmeter shows the export taking place but the inverter thinks it's feeding the house suggests to me the CT is the wrong way round.Another weird one this morning, the system thinks we need energy from battery and solar. But it’s exporting almost all of it. House isn’t using anywhere near that amount.
That would make sense, but this picture shows when I open it, this is the way round it is assembled (see arrow points away from meter).The fact that your smartmeter shows the export taking place but the inverter thinks it's feeding the house suggests to me the CT is the wrong way round.
If the installers reversed the connections at the inverter end the arrow would need to point the opposite way.That would make sense, but this picture shows when I open it, this is the way round it is assembled (see arrow points away from meter).
It’s clipped onto the furthest right live grey wire (brown cap).
Are the connections reversed at the inverter end? How would I tell that?If the installers reversed the connections at the inverter end the arrow would need to point the opposite way.
(Consumption + export)=(pv generation + battery discharge)Swapped the CT direction round, put the discharge stop back to 10%, and it's still being silly, thinking the house is using more than the solar can generate.
If the consumption was correct, but it's not!(Consumption + export)=(pv generation + battery discharge)
Job done?
There has to be something wrong with the CT, it's cabling or the connection. Turning it round hasnt changed anything.If the consumption was correct, but it's not!
At the point of that screenshot, only the fridge/freezer and a few standby items were on. Should be <200W. Not >3kW.
Smart meter was saying it was exporting nearly 3kW.
I never got informed of this, but will take your suggestions to them when I have a call with them on Monday. Cheers!From what I've read on the forum there should be a procedure for safe shutdown and restart of the pv system which the installers should have informed you of.
I agree, will try to see if they can replace.There has to be something wrong with the CT, it's cabling or the connection. Turning it round hasnt changed anything.
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