FoxESS Community - Owners & Installers Forum

Good afternoon everyone,

I recently acquired an H1-7.5-US inverter for a simple time-shift setup. The batteries are intended to store energy during peak PV generation and discharge in the evening. The system is not required to operate in zero-export mode, and off-grid mode is disabled.

I experienced some issues initially, but I was eventually able to get the system running. However, after a couple of days, the inverter stopped discharging the batteries below 97% SOC. Once this level is reached, the batteries begin to slowly charge (approximately 1 kW) up to 100%, and then discharge back down to 97%. This cycle repeats until the scheduled discharge period ends, effectively making the batteries unusable for the intended purpose.

I tried changing the EMS mode (Manual, TOU, and TOU with Export Compensation), but the behavior remains unchanged. The system is currently set to Manual mode (screenshot attached).

I also contacted local customer support several times, but the guidance has been inconsistent. One technician advised me to disconnect the CTs, stating that they are only required for zero-export operation. Another technician later advised reinstalling the CTs, claiming they are necessary for the inverter to export energy.

Thank you in advance for any assistance.

Rather than the settings page, do you have the Fox app installed and working ?.

It’s behaving exactly as if minSoC has been set to 100% - if there you have a schedule running that has previously left minSoC set to 100% it will remain set at that until another schedule changes it.

Currently it is set as "Manual", so the schedule won't show up in app. However, even when I activated the TOU and NEM 3.0, this problem ocurred.

Just changed to TOU with NEM 3.0 and got the same result.

Is there any way to override previous minsoc configuration, even if it is not showing in the app?
Also, how does TOU mode behave without CTs installed? Will it prevent battery discharge?