Inverter often stops unexpectedly (today three times)

[IngoEF]

Hi,
during the last days sometimes I notice a yellow bar in my OpenDTU-onBattery-GUI and see inverter "producing off".
Often this occurs when it was put to max limit of 1500W by OpenDTU.
After going off I have to restart the inverter, switching on is not accepted.
Even updating today to version 51a21de didn't help
I have no idea what happens but switched console on because of that behaviour and send a snippet in the attachement.
Can someone find an explanation?
20230611-Konsole.txt
The GUI also often shows error no. 47.
Thanks in advance - Ingo

[spcqike]

Any change that you log your AC voltage that the inverter reports?

I’m not to sure but I think I read that error 47 could be related to to high AC voltages. This can happen because of to thin wires (do you use 1.5mm2 or 2.5mm2 for AC wire?) or bad house installation. Or even to much production in the part of your local grid.

Another reason could be some problem in your power grid. A short power outage or things like that.

[MalteSchm]

@IngoEF
Also please check your DTU uptime (info -> system)

[IngoEF]

Ther where no outages and I think 1,5mm² are enough. Even the house installation doesn't provide thicker cables.
I wrote about update done same day, which means uptime less than 6 hours.

[spcqike]

I think 1.5mm2 is not enough. Even Hoymiles says you should use 12AWG which equals 3.3mm2. (And you are allowed to use 3 in one AC string. So in total 4.500W with a 3.3mm2 wire)

but maybe Hoymiles is just too careful.

As mentioned, error 47 is not documented and one does not know for sure what it means.

[bf4ed]

As an electrician, the 1,5m2 wires ARE OK (1,5mm2 for 13A and 2,5mm2 for 20A). This has nothing to do with the wire size. When you have only one inverter on the line it's ok. The inverters are not aware what the wire size is :)

[IngoEF]

thanks.
Of course it's ok using such cable diameter.
Actually my inverter doesn't produce more than1500W and ín future the I'll install one with 2KW, because I'm not really satisfied with HM-1500 and it's inconstant energy output.

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