Newbe here.
I've had solar for 11 months now, and I've been trying to regulate its overnight charging by adjusting the time it charges for. I've now been forced to move over to using the Mode Scheduler and there are two parameters which look interesting, FCSoC and SoC, but I don't know how to use them.
What do these parameters actually do and how, for example, do I force an overnight charge to, say, 40% capacity?
I am beginning to go through some of Will Eccles's videos. Is there one in particular which explains them, or any other reference material?
TIA,
Nick
Here is an excellent post by Dave Foster that describes all the values.
viewtopic.php?p=10376#p10376
As for your post, the sad news is Fox have changed the behavior of the Firmware logic, so now it's a problem for getting it right so to speak.
viewtopic.php?p=10376#p10376
As for your post, the sad news is Fox have changed the behavior of the Firmware logic, so now it's a problem for getting it right so to speak.
Oh, that is a pain with the changes.
Thanks for the link.
I found Will Eccles video, https://www.youtube.com/watch?v=jhohbmt0U_w (Fox ESS - Complete guide to Work Modes and Mode Scheduler UPDATED 2026 -Force charge/Force Discharge), and it looks like it the phone app just changes the FCSoC, do I'll try changing that tonight.
Thanks for the link.
I found Will Eccles video, https://www.youtube.com/watch?v=jhohbmt0U_w (Fox ESS - Complete guide to Work Modes and Mode Scheduler UPDATED 2026 -Force charge/Force Discharge), and it looks like it the phone app just changes the FCSoC, do I'll try changing that tonight.
That's the way to work it, make a change and test the results to confirm.
There are a few methods to input settings, there is https://www.foxesscloud.com/v2/login website that you can use (Quick Settings top right)
Fingers crossed.
There are a few methods to input settings, there is https://www.foxesscloud.com/v2/login website that you can use (Quick Settings top right)
Fingers crossed.
The quick settings created the confusion as it exposes more parameters than the app. The app Mode Scheduler just changes FCSoC and has no control over SoC at all.
You can use whichever you are most comfortable/familiar with of course. It can be good to know there are other ways to adjust.
Best stick with the current way you like and check tomorrow.
Hmm. Using the phone app, setting a min SoC does not have the desired consequences. The inverter switched to Grid Import last night as the battery had more than 50% charge.
I am trying to set a backstop of a minimum of a 30% charge at the end of the cheap period, and do self-use otherwise (the default mode).
I am trying to set a backstop of a minimum of a 30% charge at the end of the cheap period, and do self-use otherwise (the default mode).
Hi Nick,
I could link you to a few threads in recent times that point to this exact issue.
The system is currently using the logic that if you set a 4pm to 7pm discharge down to xx% SoC it will reach the value and the battery stops discharging.
Now what happens is the system will import from grid until 7pm comes around. They are working on new firmwares to correct this, so it reaches xx% SoC and after 10mins (from what I can tell) it should swap work mode and the battery would carry on (depending on your fallback work mode)
Temporarily, all you can do is drop the time back to 6pm or watch like a hawk for the battery to reach your xx% SoC and then quickly change work mode. A PITA for sure.
I could link you to a few threads in recent times that point to this exact issue.
The system is currently using the logic that if you set a 4pm to 7pm discharge down to xx% SoC it will reach the value and the battery stops discharging.
Now what happens is the system will import from grid until 7pm comes around. They are working on new firmwares to correct this, so it reaches xx% SoC and after 10mins (from what I can tell) it should swap work mode and the battery would carry on (depending on your fallback work mode)
Temporarily, all you can do is drop the time back to 6pm or watch like a hawk for the battery to reach your xx% SoC and then quickly change work mode. A PITA for sure.
Yuck. I'm not getting up before 5am to check. Back to the old timed charge, then.
What is the mechanism for knowing that a fix has been released?
What is the mechanism for knowing that a fix has been released?
I'm very sorry I was distracted by some cooking. For some reason I was thinking you was on about evening peak discharge.
Talk about the wrong end of the stick.
Can you start from the beginning and tell us what you are trying to achieve in the morning charge during off-peak?
You might get a notification on your App about a firmware update, or there is a FW list section on Fox's website/this forurm (both take time to be updated)
I am trying to ensure I have a minimum charge by 5am to get me through to some decent sun generation in the morning. Currently the sun is kicking in at about 7am and I'd like enough in the battery to get up, boil the kettle make the toast and a little more, plus background usage. 30% is currently plenty to spare with the good weather.
In worse weather it is easy to adjust the schedule up to 100%.
I have been doing this by adjusting the time period for charging up to now but it is less than ideal.
In worse weather it is easy to adjust the schedule up to 100%.
I have been doing this by adjusting the time period for charging up to now but it is less than ideal.
I thought that was what you was doing, and running Self-use for normal running afterwards?
Me personally, I charge each night to 100% during the cheap rate, and have it be there for what I need it for.
I will admit this time of year, I discharge if the PV forecast looks good, so I have room to mop up excess solar (though work mode is Feed-in)
Do you get a decent export rate? It might be best if you just charged to 100% for now and this increases the export income.
Me personally, I charge each night to 100% during the cheap rate, and have it be there for what I need it for.
I will admit this time of year, I discharge if the PV forecast looks good, so I have room to mop up excess solar (though work mode is Feed-in)
Do you get a decent export rate? It might be best if you just charged to 100% for now and this increases the export income.
For me, cheap rate import is more than export, so the less I import the better.
I am hoping to move to an electric car or install a charging point. Then import goes down and I get an extra 2h to import cheaply. Export also goes up above import. At that point it becomes a no brainer to charge the batteries to 100% nightly.
I am hoping to move to an electric car or install a charging point. Then import goes down and I get an extra 2h to import cheaply. Export also goes up above import. At that point it becomes a no brainer to charge the batteries to 100% nightly.
Yeah that does make it hard, having to guess the charge amount daily.
You could just set a "dumb" charge, rather than using schedules. So Grid charge choice, and shorten the time of charge if you expect decent solar.
You can of course wait for a possible FW update, but won't help you now.
You could just set a "dumb" charge, rather than using schedules. So Grid charge choice, and shorten the time of charge if you expect decent solar.
You can of course wait for a possible FW update, but won't help you now.