F18 faults
This is not a joke. On 18 April, 18 May and 18 June I got an F18 error on my Sunsynk 12kW inverter, with a reboot. This has to be a firmware issue, it's just too bizarre that it would be a genuine fault.
The faults have occurred either very late at night (22h00ish) or very early in the morning (02h00ish), there is absolutely nothing in my house that would draw a large current at those times, no timers that would switch on then, and everything that would be on at those times is on during the rest of the day.
If anyone at Sunsynk would like to look into this, or confirm that this is a known issue, I'd appreciate it.
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Groots, I'm so sorry, I had no idea that you'd replied (no notification) and things have been hectic since I posted this - I went overseas on 20 Jun for a couple of weeks and since I got back it's been mad. So my response is late, but I'll try to give you some info.
I have no idea where to extract the Operational Data on Sunsynk Connect. I remember seeing this at some point in the past, but looks like it may have been removed from Sunsynk Connect or from PVIntelless in the background? The latter still provided download links for some info although not for event logs so it's not very useful.
I searched for the fault events and manually copied the output to a file, which I've attached. Interestingly, I could only find the fault from 18 May 2023 on Sunsynk Connect. The faults from 18 April, 18 June, 7 August and 17 August don't appear in the search so I'm not sure if they were ever uploaed, or if they've gotten lost in the data migration, or what else may have happened.
Also, you'll note the 2 new faults on 7 and 17 August since my OP. So the faults don't appear to be date related anymore. I've had no faults since 17 August though.
I don't know if there has been a firmware update since my OP so can't say if that may have had an impact. I can't find a list of firmware versions or upgrade dates anywhere (which would be great to have, by the way, if Sunsynk is listening).
In the attached, I've highlighted the row showing the fault. Not sure it's useful though since it doesn't show what happened immediately prior to the fault. I see battery power and amps drop significantly, but that could be a result of the fault and the inverter reset, rather than a cause? There does appear to be a surge in a, b and c insidePower, but my guess is that becasue of the inverter fault and having to switch over to grid power while the inverter throws a tantrum.