Inverters see AC-In voltage and freq, but not connecting to grid

Hi Kelly,
Can you offer more details?

I’m about to go down to RMA the unit. Would love for a simple fix.

I suppose I will uninstall and inspect the ACin wires on both sides and also look at the terminals.

Thanks!
Mike

As much as I wanted the easy out with wire burns or bad connections, I finally had the opportunity to check the system again in-person… no wire burns.
I reseated and sanded/cleaned all connections, just to be sure. Double checked grounding, updated firmware, rechecked all config settings… no change.

One thing I am noticing… on VictronConnect, it shows when the unit tries to reconnect to the grid. Towards the end of this process, it makes a change to its 60Hz buzzing noise. I’m not sure if this is related to trying to connect to the grid or if it’s a load it is supporting on the inverter side… The noise happens at about 5sec in

I was able to get a Signature Solar RMA, but we have to get the unit back to the US to then ship it… gaaah