Bonjour
I install One Year before an ECOMULTI with SMA SUNNYBOY at the output, with always the same problem of differential current, cause circuit breaker differential switch. No problem with one device alone with grid on, and no problem without grid off, they work together. But each time the grid come back the differential switch.
At the beginnng we have Error 11 lot of time on the Color Control so we block ESS to use the Ecomulti only to secure one part of the domestical circuit in case of Grid failure, to avoid an each day reconnection . At the last intervention we can resolve this by deconnection of the surge arrester at the output of SMA SB. But the problem come back one week later. At each DC reconnection.
Which cause earth current in Ecomulti ? Is the ecomulti do the earthing of DC part (24V) ?
Is Differential DC current in surge protector could occur with surtension at the ouput of SMA SB due to sequence relay in the ecomulti at the reconnexion, ("Claclacclac" do the Ecomulti at the DC reconnexion) ? Is this sequence normal ? Is the rainny time could have conection with this problem ?
If someone can help me i will be grateful
