Bob.Upandoon

A slight shift in topic, but hopefully there is some knowledge to be had. The set up I previously outlined earlier in the post has been working well for the last month or so. However a couple of days ago, the third battery in the pile has started to display the error light. when everything is switched off, then restarted, it seems to go through the start up sequence ok, but then the red fault light comes on solid. Are there any diagnostics that can be performed on this, or is this a case of returning under warranty?

Just a quick update for everyone. I rewired the panels into a straight series of 9 and bingo..! I now have just over 360v at the inverter and it's now decided to play, so all is well. There are 4 batteries in total, but they have been disconnected for nearly a year. I have only connected one to charge, then I will charge each of the others independently so they are all at the same level of charge before I connect them up as a bank of 4. I will let you know how it goes. Huge thanks for the expert and accurate advice.

I think that's the route I will take.

👍

There are 7 of these panels

Huge thanks, I've just added some new info on the panel configuration, which I think I will now need to address.

This is really turning out to be a voyage of discovery. I now know there are 9 panels, 7 of one manufacturer's and two of another. They are not identical spec, close, but not identical. Is it acceptable to have three strings, one of which has the two 'odd ones' and one of the other seven? I think they are set up in three strings of 3, which may account for the 120 > 130 volts that the inverter is seeing.

Here it is.

Seeking confirmation that none of the settings, indicated with a yellow arrow, in this list are causing the Axpert to not charge the batteries. (see previous post for details)

Thanks for the input. My understanding is that the whole system is new, no legacy equipment in the set up. However it seems never to have been commissioned correctly. The panels are on a roof and not easily accessible without a mechanical 'cherry picker' going via a neighbour's property, so rewiring them will need planning and access permission. I'd rather exhaust al other 'soft' options before going down this route, so I'm seeking confirmation that the current settings are not responsible for the failure to charge. Incidentally I noticed that the solar voltage yesterday was up at 133V, despite it seeming to be the same cloud free sunny sky, must be some additional pixie dust in the air! The current settings are indicated with a yellow arrow.

Thanks for the advice. I did check this setting and it was not set correctly, however having changed it as suggested, the problem has not changed, so I suspect there is another underlying issue. Hopefully you can advise on my latest post....>>

Many thanks for the quick response. The inverter is indeed the model with the removable panel, but this is my first experience of Axpert products, so I'm not familiar with the various models. It was a clear day yesterday, full sun, no clouds, so I don't think that I can improve the level of sunlight. Are you suggesting that the solar panels need to be re-wired?

IMG_0.MOV IMG_0.MOV Hello, I'm a newbie to the solar power generation world, and hoping that someone can help me with an issue. I have 'inherited' a solar set up in a house that I am now using. There are about 4kw of solar panels and at the moment one Pylontech battery US2000c (with three others sitting waiting to be connected. The inverter is a Axpert MkIII 3/5kw and seems to 'see' the battery ok, with 230v being produced as expected. However I cannot get the solar panels to charge the batteries. There is no grid power as this installation is totally off grid. The installation has never charged the batteries from the solar panels, so is this a configuration / setting that I need to change, or something else?