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Mohamedmahomed asked

Multiplus 2 parallel system with 3 by Mppt feeding to grid even when disabled

WhatsApp Unknown 2023-08-25 at 11.15.33.zipPlease help. site has 2 by Multiplus 2 in parallel with 3 Smart Solar - 150/100, 150/85 and 150/35. Connected using a grid meter on single phase. When battery and PV is sufficient for loads it feeds power to grid even though it is disabled in ESS. Please see pics and video attached. Please help as client has to pay for any feeding back to grid

multiplus in parallelfeedin
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Mohamedmahomed avatar image
Mohamedmahomed answered ·

Osman Screenshots feedback error - 31082023.pdf - please really need assistance with this site. It continues to feedback to the grid. It's a single phase installation. Please see attached screenshots in the word doc .


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seb71 avatar image
seb71 answered ·

List all the components of your system and how they are connected.


The feed in happens for long durations or those are just spikes, for instance when you turn off a large load?

You could increase the Grid setpoint to 50W or more. At least for testing.

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Mohamedmahomed avatar image
Mohamedmahomed answered ·

They are spikes, but this site are unusually big, up to 30kw feedin a month. my other sites are generally less then 2kw per month to compensate for spikes. I increased grid setpoint to 100, no difference. on a constant load, still feedback even when there is no spikes.

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nickdb avatar image nickdb ♦♦ commented ·

What are the serial numbers of the 2 units?

Have you tried swapping which unit is master?

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