Just following up on this. My EMS was installed yesterday, so the system is now two AC3 inverters, each with two 9.5kWh batteries.
The batteries have been discharging as expected in line with the Discharge slots that I have set up, but I can’t get the batteries to charge. The time slots that I enter into the EMS are accepted but not passed to the inverters.
If I look at the individual inverter registers I can see that the discharge times are being updated to the values entered into the EMS. The times entered for charging slots are not being transferred.
I’ve tried setting the times, and the AC charge enabled flag, in the individual inverter settings but this does not cause the batteries to charge.
I’m down to 6% battery remaining now so I would like to get this working asap. I’ve had no joy in trying to contact GivEnergy via the AI ‘help’ assistant.
Of course, and I did speak to them. They advised that things can take a day or two to settle down so they wouldn’t intervene until that time had elapsed.
I wasn’t convinced that this was the case as there was nothing logged anywhere to say that something like a calibration was taking place, but it looks like it was!
Once the batteries had slowly depleted to 4%, through normal household consumption, it then became possible to have the batteries charge, so all good now.
It does seem that it is noticeably slower to react to changes in demand than the previous single inverter setup, which I guess is to be expected. [quote=“geoffrey, post:22, topic:2433, full:true”]
You had new GivEnergy kit installed yesterday and it’s not working.
Surely your first port of call is your installer? He installed the kit, your contract is with them, sale of goods act, etc etc
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Interesting behaviour. I should have thought about a calibration being done because that’s what happens when you install new batteries on an inverter, the inverter needs to determine the SoC/voltage range by doing a full discharge then a full charge and it would make sense that the EMS needs to do the same.
Curious that the battery drain to empty was with house load, the EMS didn’t force a full rate discharge which is what ‘normal’ inverters do. I can see why you thought it wasn’t working. Good to hear it is now running correctly
EMS - thanks to someone at PredBat online I tried a calibration on one of the inverters. The problem was that whilst one inverter would charge to 100% the other would only get to 92%. The problem inverter has two batteries - 9.5 plu a 5.2. It’s been running for 18 hours so far, both batteries are at 100%, still no end.
What is the correct procedure for calibrating an inverter on an EMS system? Secondly - how can I stop/kill it?
I started the calibration at 22:00 last night - it did nothing until the timed charge period started at 23:30.
Hi Raiph,
Did you have any joy with calibrating your EMS-linked batteries? I think I’m in the same boat. I was told to…
• disable Plant on the EMS
• set max power to full
• set Calibration to Discharge
… but I don’t have a drop-down field for Calibration on the AC3’s Remote Control page, I just have a time field to enter a scheduled start time. Same for each AC3.
If I try this, the system sits idle, discharging ~50W. GivTCP in HomeAssistant shows the inverter has gone into Discharge Mode of calibration, but some setting must be preventing it from properly running. Thankfully I can get out of it by resetting the inverter settings.
Did you resolve it with your system?
I’ve approached Michael Smith via FB to see if he can help.
Plant mode off. Check AC charge upper limit - it should be 100%. ‘Scheduled battery calibration field’ in the remote control section is misleading - just set a time. My problem was leaving Plant enable on.
Thank you Raiph, I’m relieved to hear you’ve got the same timeslot field as me. Did your calibration eventually complete (after 18hrs+!) or did you manage to get out of it with a Settings Reset?
And to confirm that you setting this in one of your AC3’s remote control page (rather than in the EMS’s remote control page which also has a calibration time slot too)?
Will give this another go tonight before cheap rate.
Hi, are you suddenly having problems with your EMS?
Don’t take this the wrong way but I’m kind of hoping so because all of a sudden Iam and I can’t see any obvious problems and I’ve exhausted pretty much every avenue to resolve the matter
Since yesterday my batteries will not automatically charge or discharge
I have 2 x AC3 inverters & 2 x 9.5kW batteries with an EMS managing it all
Hi Graham,
I’m just trying to get my 4 batteries calibrated, concerned about portal access - so thankfully the system is running… But from experience, I’ve found that the Cloud sometimes inserts spurious values into my EMS’s timeslots. I use HomeAssistant to manage it all locally, so it doesn’t cause me an issue, but my suggestion would be to try resetting each Inverter’s settings and then re-entering them. It’s a good way to do a clean sweep. Just make sure that you put the correct values back in afterwards! (I would probably disable Plant mode, then reset one inverter and re-enter the settings, and then the other inverter, and then re-enable Plant). May also be worth resetting the EMS too and re-entering the settings. (Screengrab it all in the portal first so you’ve a record of what goes where). And to check your EMS timeslots don’t straddle midnight, that’s a crucial one.
It may be that the hardware needs a restart but I wouldn’t want to make suggestions on that.
You may have already done all the above… So if still no joy, try a post on the FB group - GivEnergy Battery & EVC Owners - Paul and Michael (Givenergy Gurus) are very kindly responding to other users with issues and I’m sure they’ll spot your post and help out.
Thanks Scott, yes I have already tried most of what you suggested but I will try it all again.
My installer (who has become a friend) actually suggested the Facebook avenue this morning.
I’ve just finished typing up some details to copy and paste into a post for this forum + the other Givenergy forum + Facebook
Scott,
Yes it did finish and it took a long time. Disable plant mode and then start the calibration from the AC3 - set a time and then wait …
It should start immediately - exporting at 3kW.
Great post on FB, I hope the Gurus spot it and chip in, I really hope you get back up and running asap. Just another suggestion… is timing odd with the switchover to the new cloud login?.. You mentioned that you don’t use the GE App … I’m guessing you’ve set up the new SOS login or whatever they call it …have you since tried logging in via the App, and resetting the settings from the cogwheel top right (then re-entering them)? I only mention it as I’ve been receiving duplicate notifications from the Cloud when trying to calibrate and I wonder if some account data might have been duplicated. Sounds like you’ve explored all options but I wonder if the App reset is worth a shot - if you haven’t already tried it.
Best wishes,
Scott
I already had the SSO (is that correct?) setup.
I’m able to login fine to the cloud, the official forum, the app etc.
The really odd thing is that NOTHING is indicating a problem.
I tinker a lot with gadgets & home automation tech, use a PC a lot, I’m on Home Assistant every day as I have many many automation’s setup
It worked! I think Active Power wasn’t sticking; I reset settings and tried again and both inverters ran through to completion. No notification when done, but I checked the logs when they’d gone idle. I’ve also asked Michael Smith on FB if the EMS will still work ok in the absence of the cloud/portal as I can’t find local control for toggling Plant, or time sync - hopefully there’s a way.
Morning Graham, I see on FB that Paul has asked Michael (inventor of the EMS) to chip in - you’ve got the right people on the case - keeping fingers crossed.