Error occurred at 7:41 - give or take a minute if you can trust the GX notification logs.
V_bat at that time 53.05/53.06 (DC-In of the Inverters versus “at battery” SmartShunt)
Firmware of the MultiRS 1.26, Bootloader 1.03 - nothing newer available, so certainly well beyond the recommended 1.08+ FW
PV String Voltage at that time sharply rising, from like 12V to 330V within a minute. That’s something, but technically all within specs.
The MultiRS MPPTs (lower chart) do behave differently from the MPPT RS450/100 (upper chart):
While the MPPT RS 450/100 starts up earlier and shows the rise of the PV voltage as the sun goes up,
the MultiRS seems to wake up later - and has a more violent(?) awakening.
If that gradient (educated guess) caused that error, I’d like to ask Victron to provide a 1.27 firmware
to address this. The system has been carefully designed to operate within the specifications as defined
by Victron and I really do not like this happening. Except - of course - if the hardware is faulty, then that’s
just bad luck. But I will have to check that when I get to the site which - given holidays - may take some time.
Is your MPPT RS having the same 1.26 as your Multi RS?
In my MultiRS case, with 1.16 firmware, the MPPTs start at about 95V and track pretty wildly up until they generate a little above 15W.
It can be seen at the graph below that. Up to 95V (07:17) the voltage is rising smoothly, without MPPT interference (open circuit).
As the light is increasing, at about 95V it starts to track. At that value the generated power is negligible. It tries to lock onto a MPP, but probably without too much success. At 08:10 the first consistent MPP is found and about 10W are generated. From there all goes a little bit smoother.
The two MPPT RS 450/100 in this installation have v1.22 firmware and that’s the newest there is - according to VictronConnect.
They all have exactly the same PV Module configuration (10s1p of 380Wp) per string.
At the time when the MultiRS shoot to 300+V, the MPPT RS were slightly tracking with 1-4W output and 150-210V PV voltage.
I wonder why they say that, as the MPPT RS has the same 1.26 version as the latest…
Maybe an older version of VictronConnect?
I for one, stayed with 1.16, as the new features for Multi RS were of no interest for me.
As for MPPT RS, they only produce, so you may try, if happens again, an older version.
I’ll be watching the topic as I also have the Multi RS…
As for the MultiRS, I turned it today off, then on again. “Have you tried to turn it off then on again?”
And yes, since then all is working again. Leaves a bad taste behind, because I really do not like these
unexplained transient errors. The next instance of the error will trigger an allergic reaction for sure.
Interesting info about the FW discrepancy of the MPPTs. The VictronConnect App is 6.24.
And if I click on “Manual Update” - no newer version available.
Yes, probably the MultiRS is at 1.26 because of the inverting/exporting features, while MPPT RS is somehow behing because it’s only an MPPT.
Reverse thinking somehow, it means that the solar part of the Multi RS is at 1.22 level.
Manual update is not working because you don’t have the firmware file into the VictronConnect local database.
If you want to manual update the firmware, the procedure (for Android) is to put the firmware file in the device that is running the VictronConnect, launch the VictronConnect, minimize it (not closing it), navigate to the firmware file, open it - it will ask you with which app to open it and you’ll select VictronConnect - and in that moment it will tell you that the firmware was added to the VictronConnect local database.
From there you can later use the manual update option.
