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koro asked

Grid connecting isn´t possible

Hi guys!

I´m running the following system: 3 x Multiplus II 48/5000, 1 x Cerbo, 3 x MPPT, 9 x Pylontech US 3000, EM 24 for measuring the grid. The system runs since about 7 months without any problems.

All units on the newest firmware, the cerbo runs on 2.84.

Since yesterday I´ve a problem: allthough the grid is here as all the time, the cerbo shows grid lost and doesn´t reconnect to the grid. I´ve started the system a few times without solving the problem.

My energy supplier has measured the grid and says everything is fine.

So I don´t understand this behaviour. The system tries about every 15 minutes to reconnect to the grid, then the relais in the Multiplus are switching and immediately comes the message: time synchronisation failed or one of the expected units were not found.

Anyone an idea why the Multis don´t switch trough to the grid?

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Multiplus-IIconnection issuegrid parallel
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