Battery refuses to charge using manual shedular

[TimB100]

Hi All

Using the mode scheduler I cannot make the battery charge

I have tried setting the charge time at the start of the day 2:00 to 5:00 and at the end say 20:00 to 23:00

I way up to find my battery is flat. If I use the basic settings I can get it to charge but they is no use to me

What am I doing wrong?

[MaterialBarracuda48]

Morning Tim,


The times need adjusting, so that they begin exactly when you want, say 02:00 and then set the end time as 04:59 (which actual reads as 04:59:59 in the system)


Slot 1 needs the blue slider turning on, as it is not enabled, that would stop your AM charge session, and end time as 04:59
Slot 2 set end time as 15:59, you could also match your 40%/50% SoC to both on the same values
Slot 3 set end time as 19:59
Slot 4 set start time to 20:00, end time could be 23:19 / 23:59

[TimB100]

So every end time should end on xx:59?

The reason first was off was that it failed first attempt and I added a new one at the end

[MaterialBarracuda48]

Yes, set all the end slots to xx:59 is the way.

You could wipe them all out, and try and see if it charges say at 09:50 to 09:59
As you recall from yesterday, the Fox Cloud is slow, but inverter screen should show some action, SoC should increase by a couple of percent. You could look at your meter and see the energy flash increase also.

Once you confirm it can charge, you could then erase and build up the schedules from scratch.

[TimB100]

I'm having the same issues again with the battery refusing to charge overnight.

I cleared the schedules and made a big list to cover the day (below) but it still is not charging overnight.

Considering the whole point of the system was to make use of the Octopus flux tariff. I'm not impressed.

I saw another post where someone else has the same issue and the fix was to change the "StandbyState" switch. But I do not have access to that.

As a general question. Who is responsible for sorting issues like this? The company I paid the money to? The installer (3rd party) or Fox?

[Dave Foster]

To answer your last question first, it’s your installer that is your first call, your contract is with them, if they have a problem they should escalate it with Fox - that said Fox are pretty good at responding to requests.

The sysstandby switch you refer to is an installer option and cannot be accessed by you, but your installer can check that remotely (as can Fox).

Looking at your schedules they look correct, so just a few things to run through.

Does it attempt to charge at all during the schedule, even at low power ?

Do you have any other large appliances taking power at the same time as your force charge schedule - EV, water heater etc.. ?

On the inverter panel press and hold the the enter button (2nd from right), if it says Start ? release the enter button and press it again, but if it says Stop ? Then press the exit key (most right) - if it was stopped it will be started now and should now charge.

If the inverter was started, go into Settings the password is 0,0,0,0 so press enter 4 times, then select On-grid, Export Control - are there menu items in there for ImportLimitPwr and ImportLimitCur ? - if there are can you read back the values and post them here please.

[TimB100]

Many thanks

To answer the questions.
1 As far as I know there was no heavy power being drawn at the time the system was set to charge. Looking at the stats the current draw was 0.15kw at the time it should have started drawing current. Cannot see what the battery was at that time. I think around 12%

2 First step on the inverter panel showed Stop ? So i just excited
3 ImportLimitPwr showed 30000w / ImportLimitCur showed 028.7A

To add to the info.
On one morning it did not charge
Next morning it did charge
Next 2 days would not charge

When I woke one morning and saw it had not charged I switched the schedules off, then went to manual to force it to charge
Later turned the schedules back on
This morning that would not work. I could disable the schedules and it saved that ok but refused to let me set anything manually with the 44098 error. If I went back and turned the schedules back on it saved it fine.

After messing around it decided to change but at low rate 1.5 max, where as it would be > 3kw on the other days

BTW tried getting manual to run on both the app and the web interface.

Note it does follow the schedules even to the point that with the messing around over the days a typo was in the schedule. The 5-16 time slot was set to 90% and it did indeed follow that drawing current from the grid and not my battery leaving it at 92%. Changing it to a MSOC of 12% it did start drawing from battery again.

Looking at the battery the battery reserve capacity in the APP it is set to 12% but MSOC is 10%. I have never been able to change the MSOC as it always Errors

Lastly no matter if I manually set the schedules on or off and save them the app / web always say Mode scheduler ENABLE >

[Dave Foster]

I'll deal with the easier one first,

The 12% minSoC is because you have that set in your schedules, the only thing that endures after a schedule has finished is the minSoC setting - you can't set minSoC when schedules are enabled for that reason, it will always try and set the last schedules minSoC.

You should either change your minSoC to be 10% on all schedules or just set the longer periods whilst you are in self use to your default 10%.

Your Import Limits are set ok, power is fine, but Cur (current) is slightly restrictive at 28.7A - that would only be a factor if you have a large load on in the house at the same time as you were trying to charge the batteries (EV charger, heat pump, water heater etc..), if that is a problem you should increase that setting to your incoming grid fuse size - if in doubt choose 60A.

The randomness of charging is the strange thing, if you don't have the latest firmware ( you can check the latest here viewtopic.php?t=1927 ) I would start by creating a ticket in the App (Me, Contact Us, Support) and ask for the firmware to be updated.

The slow charging is usually a sign of low cell temperature or that the battery has hit it's minSoC setting, where it will charge occasionally at a slow rate - but if your battery temperature is below 16C it will reduce the charge current to 5A anyway - your charge power is then (your battery volts * charge current)

If that cures it fantastic, if not i'd then either get in touch with your installer and have them check that standby setting, or alternatively raise a ticket with Fox again tell them you are having random charging problems ask to make sure that setting isn't enabled.

[TimB100]

Thanks for your help

Looking at the link I presume the H1-5.0-E-G2-wl is the same as what is listed as 01/11/2025 Inverter H1 Gen2 WL Master 1.47

In which case my Inverter firmware is old as its listed as Master = 1.40, Slave = 1.04, Manager 1.26

The battery is not properly listed as EP, my battery is EP12 again old

So I will contact my installer to get them updated

Thanks again

[TimB100]

In case its of use to others. The battery charged last night so it seems to be that if the battery is discharged down to the Min SOC it does not charge.

This aligns with another post where they had the same issue. There is a setting (non user) that needs to be enabled.

Thanks

Tim

[MaterialBarracuda48]

The link is here for anyone that finds this post...

You need to have your installer or Fox set the value as shown in the image, it is not available to user accounts.
viewtopic.php?p=11254#p11254