SMA Sonny Boy 4000TL-20 inverter replacement. Full DIY fitting.

Replacing faulty Power One 4Kw inverter for the Sonny Boy 4000TL-20, easy DIY fitting in the loft.

[abaa]

will this directly power my home load with no connection to grid atall .

[karansharma]

Hi mate I have bought a house and it has existing solar 6.6kw in south australia that I believe is working. Previous owner has no clue about them. Is there any way I know when they were put up and how can I monitor their performance like in an app thank yiu in advance

[pmonser]

I noticed you only have around 230V from your solar array - it seems like if you added a couple more panels you would get more efficiency and power. I have an older model so not sure it works exactly the same, but I have about 430V from the solar array...

[martdaymo]

Was it a brand new sunny boy, or a used one?

[geofus]

It was a used one, the seller had converted to micro inverters.

[ek]

The Sunny boy connectors aren't unique, they're called MC4 connectors.