Solis inverter settings

I’m not going to search Google for YouTube videos you want,you can do that yourself and I don’t mean to be facetious in saying that

They exist

What model is it? Some have fans that kick in when they get hot

Ok, didnt realise it had fans. It has a huge heat sync.

Model 3104

Series S5-EH1P5K-L

Is there a certain voltage or current they kick in at? Or maybe a certain temp. As they are not always on?

If it has fans kicks in at certain temp.. if you use the home assistant integrations it exposes a sensor with the internal temp

Up until recently on a Sunny day the AC side of the Inverter was hitting 5.7 kWh - Load + Export , The rest was going back to the battery. Now the AC side sits at 5.2 kWh with the excess going to battery , End result is 16 kWh battery gets to 100% quicker and my clipping kicks in at 5.2kWh ! So daily production suffers. Solis support updated Firmware Yesterday and on restart it got to 5.7kWh on the AC side but soon dropped back to 5.2kWh , I did have an 800w Ecoflow MicroInverter connected to the House for a few days but unplugged it 2 weeks ago. Any ideas ?

Ok , So it looks like Grid Voltage dropped 10v (mid 240's to mid 230's) around May 29th , The same day I saw the export drops.

Is there anything I can do ?

Hi,

I was getting the tripped MCB a few times in the first few years, then last summer I got quite a few. My plan was to see would it happen again this summer and if so I'd get the installer back.

But it has dried up. Instead I get this error: OV-G-V.

The MCB does not trip with this error.

Is the Inverter now able to handle the issue now without tripping? Perhaps, I've no idea.

I installed a 15kwh battery in my parents place a couple of weeks back and have been slowly commissioning it to ensure it's working as expected. I'm aiming to have it charging during the 2am-5am slot, export excess Solar at all times and have the battery cover load when required. It's almost there, but the last couple of mornings I've noticed the battery didn't supply power until later in the day, pulling from the grid until there was sufficient solar and then if the load exceeded PV the battery is used until the following 2am. I have it in Feed In Priority with just one charge slot 2am-5am

Any ideas what I'm missing?

It's a Deligreen battery, and I'm using the user-defined config as it was throwing alarms with any other setting. It has comms, and the BMS is advertising SOH/SOC and managing the charge/discharge current. Besides, this issue everything seems to be working perfectly. I was wondering if the battery was going into overvoltage toward the end of charge but I don't see any evidence of it or alarms/alerts on the inverter itself. I'm remote so only going on what I can see in SolisCloud, but the pics I took of the BMS settings when installing vs what the inverter is reporting as its voltage, it should be ok. It's one I'd like to confirm and double check what the BMS reports the voltage to be vs what the inverter is reading to be sure.

I believe the latest firmware update on the datalogger supports dual polling. Makes sense if its no longer knocking the cloud offline.

The values look like binary values for setting the storage mode. Are you doing this over modbus or using a HA intergration?

Your logic looks like it'll work. You might need to monitor and make some tweaks. Potentially there could be a gap when you discharge to 20% and the the array can't cover load earlier in the morning.

I have mine set up slightly different. I change the battery it a different level given the forecast day. HA will look at the forecast at 1.55. The higher the forecast the lower the charge. At sunrise HA make a choice of what storage mode to operate in the in. I also have some automations to reset to self use mode of certain conditions are met. Works well but I would not be maximising every gain compared to your logic.