question

tr-ek avatar image
tr-ek asked

Grid feed in does not work any more

I am running a ESS since 2 years and it worked perfectly.

Now I realized, that the system does not feed in any more as before.

"Grid setpoint" has been set to "0" from beginning

"Grid feed in" has been set to "DC-coupled PV - feed in excess" from beginning

Using these settings, the ESS covered the AC consumption and loaded the battery. If the battery has been full, it feeded in.

Now there is no feed in any more after the battery is full.

If I change the grid setpoint to e.g. "-500", 500W is feeding in. But from battery as well if it gets dark.

My ESS system:

- EM24

- 1 Multiplus 48/3000/35-32

- 3 Pylontech US3000C

- MPPT 200/100

- Cerbo

- 4,8kWp

I updated all components to the latest firmware and restarted the whole system.


Thanks for help!

ESS
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tr-ek avatar image tr-ek commented ·

It gets even stranger. It seems to work sometimes and sometimes not. I cannot see a pattern for this. Yesterday the grid feed in worked. Today it's not working. The sun is shining. Battery is full.

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2 Answers
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dognose answered ·

Did you maybe enable Dynamic ESS and ticked the checkbox that you are not allowed to feed in?

If the mppt is throttled, the system actively tries to avoid feed in, that should usually only happen due to a setting.


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tr-ek answered ·

Dynamic ESS is switched off:

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My ESS configuration:

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