I would think they would both fix your problem, I have used the F4 on a friend's machine to solve the problem as the 067.03 was not around at the time, I have another mate with fans running high speed and will go sort his machine out in a week or so But will use the latest 067.03 as I'm told it...
The firmware is good for a 230v unit, why do you not let the unit switch to the grid before the cut-off point? In menu 12 im not sure what your setup is but check that out, unless you have no grid :(
Also seems they have a later ver than the F4 but will display as E2, from what I got out of them, its the same except for a small change on the 3.5kw unit
I really don't think it makes a difference but for some reason, I have always done the V103 first, just remember only powered by the battery at the time.
Yes I know that however, the inverter will only show you what is being used, not how much is available, anyway this story has done its time now, and happy the inverter is doing the right thing ;)
Here the Unit is showing 4kW, the battery is fully charged, and the numbers do not add up. Yet the fix LGS51177 posted makes more sense give or take 170w
Ok well glad your fans are good, I do not have one of these units so cannot comment, a good friend of mine has one, I am on the older hardware 040, I'm sure we will not see any updates soon as they still having new year.
Well, I don't know what's going on with your unit, What was the Firmware ver before you tried to update? I have done a few without any problem and 2 or 3 guys on this forum have also done the update to get the fans to a normal speed. and after the update are fine and displays 067 F4 A27 / 068 F4...