Solar PV Hints, Tips & Troubleshooting

A little speculation here:

Course when your inverter is dumping out power from your battery, while it's matching the frequency and the sine wave of the ac, it doesn't match the voltage of the grid. The voltage coming from the inverter will be a higher voltage than the voltage coming from the grid, so your house will use that first.

Depending on where your LED's are positions in the house it might be grabbing some from 220 (grid) and some from 230 (inverter), or flipping between the two as the power draw rises and falls across your house and it pulls power from the different source. Example would be your max output is 3Kw from the battery and your house is drawing 5Kw. Well since the battery can't supply it all at 230 only some of the power will come from the inverter at 230v, and the rest be supplied from the grid at 220v.

Just a theory.

Herself woke me up one night at 3am saying the outside lights are flashing.

As I went out the loo light was also flashing, the led lights in the kitchen were flashing red, green blue, island and over cabinets was like a disco.

5 sensor light outside, 8 inside plus 7 RGB led strips going nuts.

It was all lights on a pir sensor or wifi switch it seemed half the house was gone cracked.

It turned out there has just been a power fault around the same time my battery was draining so something got crossed or confused somewhere and caused the commotion, was mad..

Turn it off and then on again... I'd say the inverter has got itself muddled.

I agree, try to bounce it.

I would get someone competent to look at your house wiring since you getting all these issues. There is something not right in here. All my ligths are leds, I do charge the battery but I have none of these.

Don't mess with that EN50438L setting - on a level of operation it may not have an effect but you would be legally outside what is correct for connection to the grid. EN50438L is the correct option for Irish grid connection.

The no Grid thing is probably just intermittent loss of grid power - I've seen it on my own after transient faults (ie. the lights flashing off and on in the house when there's a very quick fault on the grid).

Battery charged last night thank f£ck, that shutdown must have done the trick..

So is there a way to reboot or factory reset the device if needed?

Hi all,

I'm looking for some assistance. I have a 6kw Solis inverter and a Puredrive battery (5kw) installed which appeared to working fine until now. I was away for a couple of days so I switched off the night rate charging from the grid to my battery. However by this morning there was alarm messages (Can_Comm-FAIL and ForceChg-BMS) on the inverter system / screen and the battery was at 0% charge.

When I looked at the switch on the battery it appeared to be off (no light) so I pressed the button and after a few minutes the alarm light on the inverter had cleared and the light around the button was was flashing green and it appeared to be charging from the grid (forced charging?). It was taking approximately 1kw from the grid and after a few mins it showed a 1% charge reading. However over an hour later it is still pulling approx. 1kw to the battery from the grid but the battery is showing at only 1% full. Any ideas on what is happening would be much appreciated. Thanks.

Will try that now. Thanks. Do you know if there is a setting on the battery which stops it discharging completely e.g. a min of 10% charge is always held? I will let you know how it goes. Thanks for the prompt reply.

Think @SD_DRACULA was having similar issues with puredrive and solis. It seem like a comms issue and solis does not calculate soc properly. Force charge should have kicked in. Check your settings, foc should be couple % lower than soc. I've recommended before to configure battery reserve instead of depending on foc as it works much better compared to foc and achives the same thing.

Have a look at this thread, https://www.boards.ie/discussion/2058213891/odd-battery-behaviour/p1

in the same place wherd you set soc and foc. You should have option for strage set mode it is were scheduled charge timers are. Cycle trough options and you will see battery reserve. Set the value to keep battery at and also make sure grid charging is enabled