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This setting is regulated in most countries and was exposed to Fox users for a brief time between app versions 2.1 and 2.2.3. These settings should only be changed by installers, which is why they were removed from end-user profiles recently.

I understand some users found it useful, but Fox is ...

That is correct. I actually did this while being not at home at all ;). No additionally device has been connected to the inverter. The only thing I needed someone at home to check was the inverters slave ID but no change was needed since the slave ID was already at 247.


I am currently trying ...

As you have the H3 Smart, you only need a device to host Home Assistant. The Home Assistant Green is a great choice.
As your inverter has a built in modbus server you don't need any extra hardware. Simply enter the inverters ip address into the foxess modbus integration and it will all work.

I demo ...

What model charger?

You'll want your installer to update your firmware and then set the grid compensation setting.
I cover it here:

Hello,

Not recommended, if you do that, you'll find the EPS will trip with overload if you solar generates more than your house load while off grid as it can't be clipped.

If you want solar generation during a powercut you should dc couple it.

2.5kW isn't much power, honestly

You'll need to move to the new way called Mode Schedules. I made a video how to use it here

Account number and API key in those boxes

I made this video to help, don't use the simply two slot settings as these are being phased out. Make sure you use the mode scheduler.

try setting the backup reserve to 90%, hit save, then lower the minsoc to 10%, hit save, then lower the backup level to 20-30% and hit save.

It needs to be added to your existing site to appear correctly.

Yes, fox ess K series requires a 500mm gap. That is going to cause a lack of ventilation, I suspect.

page 11 of the install manaual

yeh, it continues to derate down to low single figures when the battery stops responding.

I don't believe it's supported at this time.

You need to be looking at the bms mincell temp not the battery temp as that is the bms which is normally warm. The bms charge limits are set from the mincell temp value. Anything under 12c will start limiting the charge rate.

Use the foxcloud2 to report on your mincell temp as I show here:
https ...

I bet your export limit is set to 0 watts or you've got your system in force charge mode instead of self use.

can you post a screen shot of the energy flow page so I can confirm how your system is setup.
The short version is the inverter will be recording it's generation without any additional action.

I was chatting with my fox ess contacts today and they've asked me for more details and they'll look into. hoping to get this fixed asap

Hi Brian,

all changes I made to the original modbus integration are here:
https://github.com/AdamNewberry/foxess_modbus_EVO/tree/main

i installed it via HA manually from my git fork download.

it went through all the normal setup steps like the official hacs version from nathan.

Adam


Are ...

I have a Home Assistant automation that jacks up my minsoc from 10% when there is forecasted bad or stormy weather. That way, I can use the full battery range most of the time, but on days when the risk of a power cut is increased, I have an extra reserve. Has worked well for me for years.

Currently, invite only to this new tariff.

Morning,

I'm a big fan of Octopus Go, which is a dumb (not smart requires you to set a force charge schedule) 5 hrs of 8.5p per night for the ev and whole house or the intelligent go, which is 6 hours at 7p for house and ev plus random additional cheap slots when the grid is green and cheap but ...

I've seen a number of reports of this also. so agree a one time manual check and reapply seems to solve it.

Fox ESS Evo User Manual