msevestre

I use solar assistant, with home assistant on the back. This drain is not under control and solely coming from inverter, which behaves abnormaly. I lost the RS232 cable provided with my inverter - so need to find the working pinout (I found one, but no success for now - at least the WatchPower Windows APP does not talk to the inverter)

Hi thanks for this. This looks like a more recent firmware than the one I have. Did you flash both DSP & Remote panel ? On my end, I am still struggling to get feedback from my reseller. My issue is : the inverter always throws back to grid power which could have been used to charge battery or power loads (and then, less discharging battery). On a normal sunny day, while solar generate 2.5kW, I’m observing a 150 to 200w drain to grid... of pure loss Matt

Hi all I recently connected a 14.4kWh DIY battery pack (Seplos BMS) on my iGrid SV IV (installed early Jan 2024). I am observing a weird behavior: while battery is plugged to my inverter (in SBU mode), solar production always injects solar power back to grid, while it could globally optimize as follows: charge battery with the WHOLE overproduction (situation of solar overproduction vs load need); or reduce battery drain (situation when loads needs are above solar, ie: battery is also used to power loads) I monitored up to 16% of the solar power to grid sent back to grid instead of being used to power load (and reduce battery drain) or simply charge battery (when loads are idle) !!(*) See the type of situation I face (side comment: the battery was far from reaching its current capacity limits - so was able to absorb 306w): See how it is over a nearly 30 minutes period - red =grid, nearly always injecting back solar: While EASun reseller has been very active at purchase time, now that I face the need of their technical support, nobody answers So I am trying to get your assistance. Do you have any clue on what's possibly wrong with my inverter ? Thanks Matthieu (*): indeed, to monitor this, the "solar to grid" feature is enabled (was initially to check inverter works and was handling solar over production properly). Disabling the "solar to grid" feature lead to nothing more to grid (hopefully), but a lot the loss remains (heat dissipated ?) - see below capture with "solar to grid" disable, while nearly 250w are "lost" :

Great. So only possible firmware would be Infinisolar 56.xx firmwares...

Hi you're right. 76.03 (I updated my initial message to correct my mistake). Does that mean that iGrid SV IV running 56.xx firmware should better be (if possible ?) updated with Axperts firmwares and that what's on the voltronics FTP in the "SV IV" directory implies there are different flavors of this machine running DSP 28335 (thus such 76.xx firmwares must not be used for 56.xx firmware-based units (as running on DSP 28066)). I'd be curious to get @ata2k6 feedback, as his message dated 15th Nov talks about updating with the 76.03 you shared... 🤔 Thanks @Coulomb for your feedback & warning. Matthieu

Hi in the Voltronic FTP server section dedicated to EASUN (http://ftps.voltronic.com.tw/E/Easunpower-93CB312922AC474787C6/) there is a "sv iv 5.6k sn96132209100103" directory in which the Infinity firmware v73.06 is listed (but I agree, this is not in line with the version numbering - my own iGrid SV IV, which is 05606) @ata2k6: do you confirm you successfully updated your EASunpower iGrid SV IV with the infinity v73.06 v73.03 firmware above ? Matt Update: version update after right Coulomb's comment.