FoxESS Community - Owners & Installers Forum

Hi Mark, If you'll always use 100% of the battery then it might be your capacity is undersized, or you need to rethink your strategy and consider it more of a cost-mitigation exercise to see how much usage you can shift to your cheap rate. You won't get much solar during winter - last year my worst ...

Rounding this off with a final update.

My suspect battery pack was eventually replaced under warranty.

Thanks Dave. The battery stack is in a garage, so while it's not heated, it doesn't go below 0C, and very rarely goes below 5C (didn't this winter). I am looking at getting a server rack / cabinet, with some fans, so I can ventilate in warmer months and keep them a little warmer in colder months ...

Thanks Dave. My installer referred it on to Fox for me. Had a quick chat with them, chap there logged in, took a look and has done a long slow charge over the course of a day. At the moment it seems to all be ok again now, but in the Home Assistant stats the BMS kWh Remaining figure only reaches 7.5 ...

update time. A few weeks ago one of the V1 batteries (the one that got warm, see previous post) started flashing a red light. Got in touch with my installer who then tried to do updates, but were having problems due to the mix of v1 and v2 batteries. We had a chat, and I think they got Fox involved ...

Packs have now been updated to 1.09 and 1.15.

Since the initial update there does seem to be improvement, cell high and low mv readings are normally 100mv difference and usually much less. Will give it some time to settle, but looks good for now.

Thanks again Dave!

Thanks for the info Dave. Firmware versions reported on the front panel are now: M - 1.008 S 1 and 2 v2? - 1.00 S 3 and 4 v1? - 1.13 IV - 1.00 I think S1 and S2 are the v2 packs as they are at the top of the stack next to the BMS, so I'm assuming the numbering goes upwards the further down the chain ...

Logged a call with my installer yesterday - just missed the closing time, but happy to say they've called back first thing this morning. First step is updating the firmware on everything, so will see what that does and report back. After reading a few bits here and on FB I did see some mentions of ...

Hello all. I seem to have an issue with battery capacity rapidly reducing, hoping someone can recognise what the problem might be, and what's a likely solution. Over the past ~6 months I've noticed my battery capacity doesn't seem to match expectations. I have 4x 2600, 2 are V1, 2 are V2 and a V2 ...

The CT clamp has been replaced from a mienergi one to a proper fox clamp and now all the readings match up.

Thanks for the links - I'm giving the installer a try one more time.

Thanks @canton7 - I know the Load is not a direct reading, and it's important to understand what exactly is being read, and where, to generate the data points! I see in the datasheet for the mienergy clamp (part number CT100-16-05) on their website that the current ratio is 100A/40mA. I haven't been ...

I have had this issue from install, but haven't been able to figure it out. Here's some background info, followed by some questions. I have three sources to tell me the Load my house is pulling - the Fox inverter (via home assistant, modbus), my smart meter display and a shelly EM. The Shelly and ...

It sounds very interesting as a project, but I do have some reservations about folding it into the HA-modbus integration. There's a good few people struggle with the modbus integration as it is, and if they tinkered around with things they might inadvertently mess something up. I would expect the ...

No problem Ryan - I've made quite a few ethernet cables (100s!) in the past, but didn't have a tester with me now to check the pinouts. Thanks for posting the info! Fox have sent a replacement cable which (along with firmware updates) seems to have stabilised my system. Now on a v2 BMS and 2x V2, 2x ...

Thanks for posting this. I have now got a V2 BMS, some V2 and V1 batteries. I'm seeing exactly these faults/errors, i.e.: Communication Fault Between battery and Device Bat Voltage low Bms Hardware Protect Looking at the cables used for the RS485 ports, can you use a standard ethernet cable as a ...

Great stuff, thanks for the info Will!

I'm in a situation where I can't get onto a cheap-rate night tariff, and don't know how long it will be before it's resolved (over 3 months with no updates from octopus :( ). My solar production has got above 50% only once in the last 10 days, with most of the time the batteries are at min.soc (20 ...

It's not happened since then, but apart from one day there's not been enough solar generation to charge up much!

Modbus of course, Will. (see signature!)

Today I've had an instance of a problem that I've seen a couple of times recently. The batteries will be charging from solar generation, but the Home Assistant plot for the hour shows export instead of charging: https://i.imgur.com/qjgux11.png When I look at the system behaviour I can see things are ...

At the moment this is fine. It doesn't stop you being able to use the data or sensors. I'll look into setting unique IDs so the message isn't shown, but it's only advisory.

Installing this! Some of the sensors are just what I wanted for working out automatic scheduling of power consumers (e.g. immersion heater). Does the Fox Cloud account need any special role, or is a standard user sufficient? Also, if you're not on a cheap-rate tariff, do you know how that works? I ...