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Hmm, as it is such a new install I really do think you should get your installer back to look at this for you, it could be CT direction or a cable break either are very possible if things have been changed recently,


Is there a number i can reach out to you for a Facetime session. I do have CT ...

If it continues to show a negative load your CT has either stopped working or been disabled and there's nothing you can do on the app, you need to know if a CT or a meter has been fitted - if you know what has been fitted a CT for instance, you can check in the inverter Settings, Feature, Meter/CT ...

The scheduler settings look ok for a force charge between 00:00 & 07:00 and a full power discharge between 21:00 & 23:00 (note your battery may run out and you end up using grid power which might be costly).

Is there a reason why you have chosen 20%, if you don't have EPS installed it should be set ...

The H3 Pro is a special case and often has an EMS box for KH and H1(G2) you are correct, it is from Parallel 2 on the first device to Parallel 1 on the next and so on.

The firmware should be the same on all devices, and the latest firmware will ensure that it is supported correctly.

Don’t forget ...

From what you have said, it sounds like you have another solar inverter (on FiT) and the Fox is running as a battery storage system - or do you have PV also connected to the Fox ?.

As a battery storage system, the default operating mode is Self-Use which will use any excess solar to charge the ...

That's unusual, are you the installer or has the installer bound them already ?

Generally speaking the only people that can correct this are Fox themselves, so you would need to get in touch and explain the problem with SN's etc... if you are in the UK they can be emailed on service.uk@fox-ess.com

In a TN-C-S earthing system, there are only 2 feeds from the grid Live and Neutral and Neutral is split before the meter to provide an Earth (bonded N>E).

If the Earth is still present then you are still connected to grid Neutral and this is where it gets complicated, the regulations do not allow ...

I've seen trailing leads or single sockets installed on the EPS, the caveat is that if the grid has failed then it is possible the grid incomer has been cut in which case you may not have an earth (unless you have a TT installation) hence the trailing lead/single socket could be un-earthed and hence ...

Great stuff, glad it’s working

It’s quite normal in Self Use workmode to see a very small grid demand, when it is sunny the export should zero the grid import but overnight there will always be a small drain (it’s a grid tied inverter and has to maintain a bias point).

If you have a KH, H3 or H1 G2 inverter there is an installer ...

I'm not sure whether this helps, there is an option within the OpenAPI to set the ExportLimit although I don't know whether this applies to all inverters or only Hybrids.

Setting the ExportLimit would reduce the inverters output and it is easy enough to test, the Energy Stats app uses the OpenAPI ...

No you can only install additional CS4300H in the same stack.

When adding new slaves, add them between the CM4300 and the next battery in the stack, make sure the existing stack is approx 50% SoC (+/- 3%) when fitting the new battery and once added make sure the firmware is the same across all ...

Only by using the scheduler which should be possible but it’s a bit different than charge periods as you cannot overlap so for example if you want to start at 05:00 and end at 07:00 you would set 05:00-06:59 (as it assumes the :59 on the end time)

You would use Force Charge, minsoc 10%, maxsoc 100 ...

I'm sorry to say that the T series does not support modbus / RS485 to be able to send commands to, only polled sensor data is provided.

This is an old thread (before the T series exposed RS485 on its comms pins), but explains the problem https://github.com/assembly12/Foxess-T-series-ESPHome-Home ...

HA core 2025.5.2

When you say integration, do you mean the Foxess modbus integration? If so it’s 1.13.4, which seems to be the latest?

I’ve never managed to get any data.

However, while looking for the integration version, i came across “version” in the configuration settings. I assume this ...

Ok thanks for confirming, it sounds like it’s almost there.

Just to change attention to Home Assistant, are you using the latest HA core 2025.x and the latest integration v1.13.5b7

Have you been able to add the device and get any data from the inverter, or does it always fail when you attempt to ...

Hi, it’s reporting no response which implies the inverter either isn’t seeing the request or not replying, a few things to look at -

It doesn’t take much in the way of a mismatch in settings for it not to work - what lights are showing on the waveshare? - when the ACT light is on permanently it ...

Hi, yes this is mostly a statistical problem, the main CT clamp will tell it how much is being exported or imported and so the battery will charge with export and supply power if there is import from the grid - the main problem for the app real time date is that as the AC1 cannot see the magnitude ...

Just to add the ios 2.1.60 app has broken the stats on the summary page load, grid, PV production and revenue all show wrong - there should be a fix very soon, keep an eye out and upgrade as soon as it lands.

No the app isn't much use in analysing things like this, you have to use a browser and go to www.foxesscloud.com and log in there with your same credentials as you use for the app.

When you get logged in, click 'Device' and under that 'Inverter' - it will list your inverter details and at the far ...

It’s not unusual and the difference I can see there is only marginal, it’s most likely the top string is hotter than the lower string (heat will be rising from under the black panels) and for every degree above 25C you will see the panels derate by approx 0.5%

Yes there’s definitely a bug in this version, my inverter also showing incorrect readings - we’ll have to wait for Fox to release a fix.

I tried this yesterday, but the result was that all load was taken from the grid with the PV going to charge the battery. Not quite what I had in mind...

The idea is to use 'Self-use' or 'Feed-in priority' modes, but to have the excess load (i.e. load > PV) coming from the grid instead of the ...

Try reading the holding register 41012, this should be your export power limit on the H3 - if it reads correctly you can write to this register to throttle your export power.

On the latest firmware I have, which is:
Model: KH10.5 - Master: 1.43 - Slave: 1.01 - Manager: 1.42

Last night I had this work model, see screenshot. Min SOC 100% is the key component - I was wondering what it would do.
At midnight the battery started to charge from the grid at a rate of 1.25kw ...