FoxESS Community - Owners & Installers Forum

The wired datalogger doesn't need to go through the laborious setup that the wifi version does - as long as you give it an internet enabled connection it will connect to the Fox Cloud and start reporting.

The datalogger is what binds the inverter to the installer, agent and user so when it is ...

What if the inverter has 2 battery inputs, like the H3-Pro?
Could I, for example, insert
an Ep11 under the first input and
an Ep5 under the second?


Fox say you should have matching battery stacks on the H3 Pro, although a few people have tested it using different battery models - however the ...

It may well be firmware that is causing this, the MaxSoC option was added to scheduler but it needed a certain level of firmware on the system to support it - the fact that it disappears sounds as if the inverter isn't able to handle this part of the schedule.

You haven't mentioned your firmware ...

I have just been told by my installer that the Compensation Bias option is not available for the H Series yet. Do we have any ideas on how often FOX role out updates from the K series to the H Series so this feature will be possible?


It’s definitely on the KH, H3 and H1 (Gen 2), it’s possible ...

Yes that’s it, it’s a good solution when on-grid, but for an EPS system you would need the solar and batteries on the same system so that it can blend them as part of its power source, I know that Huawei make hybrids, is there any scope to add batteries to your solar inverter ?.

Can you say where are you seeing those headings, are they in the V1 app, on the cloud, in a data report - preferably with an example, Fox use differing terminology depending on how you view the data.

Both the Huawei and Fox inverters are grid tied inverters, when the grid fails the Huawei will shut down as will the Fox inverter, but the Fox will allow operation on it's EPS output which is distinct from the grid input (and as you have said you have to remove any link to grid when 'islanding' in ...

If you look at your first octopus graph of grid usage overnight, you are trying to find an average bias point that would overcome the hourly usage - in that graph if you draw a line across at 0.08kwh (80 watts) you would have the vast majority of the import peaks below that line.

You might want to ...

The voltage showing does confirm you have both strings active, I assume that screenshot must have been taken when it was cloudy - with 4 panels you'd expect to see around 120 volts in full sun, and for the 12 panels around 360 volts, but the installer could have wired some of the panels in parallel ...

That looks pretty normal in Self use mode, no grid use during the day when the sun is up and the bias automatically shifts towards export, and overnight when the bias shifts the other way there is a small usage.

You would expect your installer to know how to do it, the larger installers that work ...

It is an installer option and not available via the menus (you must also have the latest firmware), contact your installer and ask them to set it for you, or if you have problems email Fox support with your inverter serial number and ask them to set it for you.

Something very wrong there, it sounds like your inverter has either a hardware issue or the firmware is mis-matched, can you post what your Master, Slave, ARM(Manager) versions are ? and i’ll check the latest firmware.

44098 usually happens when the comms is flaky to the datalogger or the manager ...

Might be worth checking the time shown on your inverter screen to make sure it is correct, and double check on the Foxesscloud website that the scheduler is set the way you expect it in case your phone/app is setting it incorrectly. (on the website, Inverter Details screen click the blue box next to ...

There is a lot to consider here,

are all of your panels in a single string i.e. 16 * 435 watt panels = 6,960 watts which is firstly higher than your inverters output (5kw) but also higher than the recommended power on a single string (3750 watts) - if they are on a single string your inverter will ...

You would be better connecting the inverter over local modbus (it's not as scary as it appears and there is a lot of advice available), in the case of the cloud you are obviously relying on it's availability to do what you need and whilst i'm no expert on Tony's cloud but it is definitely very ...

The reason for .csv is that it's non proprietary and the effectively the lowest common denominator i.e. all data programs will have a .csv import facility.

I'm not entirely sure I know the reason you don't have import or export stats, I suspect as you have micro-inverters they generate PV but ...

The MaxSoC on the first schedule between 00:300-05:30 should be set to 100%, at 10% it will not charge at all.

MaxSoC only affects gird charging and when the batteries are at or above this the charge schedule will be ignored - change that to 100% and all will be good.

That is normal behaviour, when the battery is full the BMS reduces the allowable charge current to zero, depending on state of charge, temperature, age and cell balance the BMS will then wait before allowing the batteries to start charge again (which reduces unnecessary cycling) - typically it drops ...

Wait until the sun is up tomorrow (i.e. you have pv power) and then restart your HA, that sensor is a riemann sum and it freezes occasionally on new installs.

Sorry for the slow response, there is nothing wrong with the setup as you have described, as long as there is proper separation on each phase the H1 inverters will manage their own phase in isolation from the other phases.

The CT clamp for each inverter must be fitted to the phase the inverter is ...

RussJH wrote: Wed Apr 30, 2025 3:24 pm Does anyone know the recommended temperature settings - min and max please ?

Many thanks
Russell

The ideal temperature range is between 20C and 30C, the batteries are capacity rated at 25C

Can Fox service centre remove the agent/installer from the associated datalogger? Then I as an enduser will be able to register as an agent/installer myself and can run the updates. TBH: I am already disappointed with my installer, despite their site-crew doing a decent install, the installer ...

Yes not far off with that, you must add CS4800 slaves and the pack must be at 50% (+/- 3%) when you add the new batteries.

The lowest battery has a plug fitted to terminate the batteries and it is always advisable to add new batteries to the top of the stack, so yes remove the Master and then add ...

You can’t as an enduser, the correct route is to contact your installer and ask them to update your firmware but if your installer does not respond or has gone into administration you can email your local Fox service centre with your inverter serial number, explain your installer is not available ...

That is normal behaviour - the BMS slows the battery charge as it approaches 100% and once it has hit 100% it turns the charge off altogether to avoid damage and over heating. It then decides when to start allowing charge based on battery soc, battery temperature, cell balance, age etc.. but ...