I just ordered six DS3 units, the 750w version, for an add-on array I'm building (tying into the GEN input to my Sol-Ark 15k). I purposely didn't get an ECU with them though, because 1) I don't really care that much about monitoring individual performance and 2) more importantly, it doesn't seem *necessary*, based on the installation manual.
So my question is, for anyone with experience using these, or specific knowledge: will they work without the ECU, basically just plug-and-play on the microinverters?
The manual says basically "hook everything up, apply AC power, units will begin operating after a few seconds/minutes whatever". But there's a big discussion over at solarpaneltalk.com about all sorts of problems people have had with these, and AP requiring installers (AP famously "doesn't support DIYers", wtf) to do firmware updates before installing, which of course requires the ECU...
So my question is, for anyone with experience using these, or specific knowledge: will they work without the ECU, basically just plug-and-play on the microinverters?
The manual says basically "hook everything up, apply AC power, units will begin operating after a few seconds/minutes whatever". But there's a big discussion over at solarpaneltalk.com about all sorts of problems people have had with these, and AP requiring installers (AP famously "doesn't support DIYers", wtf) to do firmware updates before installing, which of course requires the ECU...