Dear Fox ESS Support Team,
I recently installed a brand-new Fox ESS solar system at my home:
Inverter: Fox ESS H1-5.0-E-G2
Batteries: 2× HV Fox ESS EP5 (5.18 kWh each)
While reviewing the data in the FOX Cloud app, I noticed that the Total Load is shown as the sum of the Solar Production and the House Load. As a result, the battery is rarely charged.
To address this, I set a charging schedule from 11:30 to 19:30. However, as soon as the schedule ends at 19:30, the battery discharges completely, regardless of the current house load.
I have also observed that Meter2 shows no readings (see attached picture).
From my understanding, the Fox H1 inverter should be able to manage house load needs by balancing solar production and available battery charge. My installer has visited and checked the system, but I’m not certain the issue was fully understood.
Could you please review my setup and advise on the correct configuration to resolve this issue?
Thank you for your assistance,
Abilio Silva
Unless you have a secondary generation source (such as another solar inverter), Meter2 will always be zero. If you do have a secondary inverter fitted with panels attached then Meter2 is either not fitted / working and that needs correcting.
Yes I agree your load is reading very high and there is no excess so your batteries will not charge naturally - i’m assuming that is not correct ?
As you have said the load reading should only show the amount of power consumed within the home and your grid would show import or export if there is any surplus - assuming there is surplus and the inverter is set to Self Use workmode your battery should charge.
If the load reading is not correct, it is likely that the primary meter (or CT) is fitted to the wrong point in your system or is not working correctly - it would normally be fitted on the live feeding from your incoming suppiy meter - you should call your installer back this is clearly not working correctly.
Yes I agree your load is reading very high and there is no excess so your batteries will not charge naturally - i’m assuming that is not correct ?
As you have said the load reading should only show the amount of power consumed within the home and your grid would show import or export if there is any surplus - assuming there is surplus and the inverter is set to Self Use workmode your battery should charge.
If the load reading is not correct, it is likely that the primary meter (or CT) is fitted to the wrong point in your system or is not working correctly - it would normally be fitted on the live feeding from your incoming suppiy meter - you should call your installer back this is clearly not working correctly.
Hi thanks for the prompt reply.
Yes the inverter is set to self use, since the first day of instalation that the load graphic sums all energy sources available. In my understanding only shows a normal behaviour during night when i have the battery depleted and no solar power.
Just for my undertanding the CT is the part instaled at my house eléctrical painel?
Thanks for the help
Yes the inverter is set to self use, since the first day of instalation that the load graphic sums all energy sources available. In my understanding only shows a normal behaviour during night when i have the battery depleted and no solar power.
Just for my undertanding the CT is the part instaled at my house eléctrical painel?
Thanks for the help
Yes either a CT clamp or it can be a meter depending on your installer or local regulations.
The CT clamp (or meter) would be fitted on the live feed as it enters your property, if you do have a secondary inverter fitted solar inverter you should have a second CT clamped to the live feed from that inverter.
The CT clamp (or meter) would be fitted on the live feed as it enters your property, if you do have a secondary inverter fitted solar inverter you should have a second CT clamped to the live feed from that inverter.
Hi Dave,
Thanks for the help, are there schematics for the CT installation, to see if it matches my current configuration?
Best regards
Thanks for the help, are there schematics for the CT installation, to see if it matches my current configuration?
Best regards
If you download the manual here https://www.fox-ess.com/download/getFile.php?id=88
You can see the Meter connector pinouts on page 24
On Page 25 is the CT1 (and CT2) schematic and on Page 26 if you have a meter fitted
You can see the Meter connector pinouts on page 24
On Page 25 is the CT1 (and CT2) schematic and on Page 26 if you have a meter fitted
Hi, I have the same issue on my installation. It seems that the values are read wrong. This is misleading the whole installation in the steering. If i put the battery to "possible" unload then the battery is discharged instant to the grid. This is related to the values. Values are climbing higher and higher in case the solar and battery energy is measured.
What a mess. If you find the issue or the wrong connection will be great to read some feedback from your side.
Thanks in advance.
Marc
What a mess. If you find the issue or the wrong connection will be great to read some feedback from your side.
Thanks in advance.
Marc
Hi Mabu,
I am still facing the same issue. The installer has re-checked the CT installation and confirmed that it is fine. I have left the resolution of this matter to my installer, and I understand that there is ongoing communication with FOX ESS services.
Tomorrow, we will return to my home to check the system again and attempt to configure it.
The system is set to Self-Use but does not provide accurate readings. Instead, it is prioritizing energy discharge to the grid. The system only behaves as intended when I disconnect the house electrical panel master switch for the grid—in that case, the readings become normal, and the battery charges and discharges according to the house load needs.
If no solution is found, this investment will unfortunately be useless.
Best regards,
I am still facing the same issue. The installer has re-checked the CT installation and confirmed that it is fine. I have left the resolution of this matter to my installer, and I understand that there is ongoing communication with FOX ESS services.
Tomorrow, we will return to my home to check the system again and attempt to configure it.
The system is set to Self-Use but does not provide accurate readings. Instead, it is prioritizing energy discharge to the grid. The system only behaves as intended when I disconnect the house electrical panel master switch for the grid—in that case, the readings become normal, and the battery charges and discharges according to the house load needs.
If no solution is found, this investment will unfortunately be useless.
Best regards,
I'm experiencing something similar. This morning, the values were correct—without solar. Then the sun came out and solar production started, and everything became strange. The software shows me a reference from the grid, but the meter is running backwards #facepalm.
I also have the effect that when I release the battery for use, the discharge is attributed to the house load and the discharge keeps increasing. Less than 40 minutes later, the battery is completely discharged and I have fed 12kWh back into the grid. To conserve the battery, I have stopped the discharge, which annoys me because I paid for this function but can't use it.
Currently, it doesn't bother me because I consume 10-14kWh myself (via Shelly EM3 in my home installation) and feed in 35-46kWh. So I'm still in the black.
However, the app thinks that I can't cover my energy needs. LOL
I also have the effect that when I release the battery for use, the discharge is attributed to the house load and the discharge keeps increasing. Less than 40 minutes later, the battery is completely discharged and I have fed 12kWh back into the grid. To conserve the battery, I have stopped the discharge, which annoys me because I paid for this function but can't use it.
Currently, it doesn't bother me because I consume 10-14kWh myself (via Shelly EM3 in my home installation) and feed in 35-46kWh. So I'm still in the black.
However, the app thinks that I can't cover my energy needs. LOL