No it should be very simple. It does not blow up if I have my main grid turned off and charges from PV and powers all my loads no problem.
Off-Grid is easy - grid connect with Zero export is hard.
But, it's not.
Yes, disconnecting works perfectly.
I don't think so. I'm pretty sure that people have complained about it drawing from the grid, when they didn't want it to. (Which is the opposite side of the same issue)
That would be nice.
Good point. This may be the crux of the issue.
Maybe we are using different terminology here but I thought the issue is if you are trying to zero out grid usage by using current transformers to detect how much power the inverter needs to produce in order to only produce enough to prevent it from having to use any grid supplied power. If you are grid connected and only switch to it when batteries get too low or if you are using inverter in "UPS" mode such that you immediately switch to battery/solar when grid goes down then in these cases it should work flawlessly.
That would be an interesting question to pose, maybe in a new thread. Have any of the SolArk owners had this problem and if so how did they address it. Or any other grid tied inverter that claims to offer zero export.
probably Sol Ark went on the safe side and configured/calibrated it that it always draws a little bit - instead of back-feeding.
I'm a EE and just from my understanding of measurement technology and sensors - I can tell you that true "close to" Zero Export is not possible with current means of measuring energy flow.
This comes from the value of an AIO.
That is good point... and I think would get rid of all the confusion if they would change Zero Export to "Near Zero Export" or similar.
thinking about what you said, perhaps there is a way to set it to only import during the early hours of the morning like 4am to 8am as the rest of the time I can run on solar and battery. I cannot disconnect completely or I have no power once the batteries dies around 4-5am (yes I am planning to buy one more and that will allow a total disconnect). but for now I still cannot see how that would stop the export if the no export option is on and still its sending .4-.7kw a day back into the grid its just a matter of time until I get a fine from utility or worse.
As long as you are importing, you won't be exporting.
not sure I follow this but since I am trying to run with as little as possible grid input and zero grid export you saying to use the peak shaving option to allow only limited power say .1kw (the smallest allowed) as input from grid during say 7am to 5pm then the other time since solar is down to almost nothing it has nothing to export except battery and export is turned off so it should stop the constant in/out fluctuations I am seeing,
no fast zero export has only one functions to read the CT's faster then every 5 min. to limit the amount of export or control it better. the export to grid option is off and yet system still exports and imports when unnecessary or required to do so.
I can help you out send me a personal message with your login info. I have had to fix this with other accounts already.
Who are you exactly ???
Can you explain what exactly is the fix and why @rmacgurn isn't able to fix it himself? From my perspective it should either be a firmware update or a setting the end user can change and not something hidden that is magically fixed by someone remote.
Looking at previous messages it appears to be a Signature Solar employee or someone associated with them.
