Dual Schneider Inverter System to Single Inverter Configuration Settings

Hey Guys, I have changed the batteries in my system (XW+ 6848, XW+5548, 1x80A Schenider CC, 2x 60A Schneider CC). I had some old Absolyte batteries, just about useless at this point. This is an older system from 2013 that I inherited with the house.
I now have 3x EG4 LifePower4 batteries.
Connected everything, adjusted the battery settings in my InsightHome on the Charge Controllers to the provided EG4 Voltages. Batteries are set as "Custom" in the config for now.
Fired up and ran the system late in the afternoon (sun almost down), everything ran fine. House ran on battery power until just before midnight before voltage dropped enough to switch over to the grid. House continued running.
Next morning when the sun came up the system started charging as it would/should. When the battery voltage was sufficient the inverters started selling.
At some point in the late morning (around 11am) the XW+6848 (the Master) had a failure. The DC Bus Disconnect breaker (that's how it is labeled) for that inverter tripped. I was summoned by my wife because the house had no power. Attempting to reset the breaker resulted in a sizzle and pop and the breaker tripped immediately.

At this point, while I continue to figure out what actually failed on the inverter, I would like to configure the system to run with just the single XW+5548, this should still supply the house.
Do you think this is possible with the failed inverter still connected but powered off?
I am getting an F66 Fault - Multi Unit Configuration settings are incorrect, Make sure only one unit is configured as the Master.
The failed inverter is off.
I have set the XW+5548 to be a Split Phase Stand Alone unit in Multi Unit Configuration, shortly after reboot it throws the same Fault.

Any thoughts?
Thanks

Bajanmonkey said:

Hey Guys, I have changed the batteries in my system (XW+ 6848, XW+5548, 1x80A Schenider CC, 2x 60A Schneider CC). I had some old Absolyte batteries, just about useless at this point. This is an older system from 2013 that I inherited with the house.
I now have 3x EG4 LifePower4 batteries.
Connected everything, adjusted the battery settings in my InsightHome on the Charge Controllers to the provided EG4 Voltages. Batteries are set as "Custom" in the config for now.
Fired up and ran the system late in the afternoon (sun almost down), everything ran fine. House ran on battery power until just before midnight before voltage dropped enough to switch over to the grid. House continued running.
Next morning when the sun came up the system started charging as it would/should. When the battery voltage was sufficient the inverters started selling.
At some point in the late morning (around 11am) the XW+6848 (the Master) had a failure. The DC Bus Disconnect breaker (that's how it is labeled) for that inverter tripped. I was summoned by my wife because the house had no power. Attempting to reset the breaker resulted in a sizzle and pop and the breaker tripped immediately.

At this point, while I continue to figure out what actually failed on the inverter, I would like to configure the system to run with just the single XW+5548, this should still supply the house.
Do you think this is possible with the failed inverter still connected but powered off?

Click to expand...

You might need to remove the communication wiring (sync and xanbus), but it should work with the AC and DC wire connected

Bajanmonkey said:

I am getting an F66 Fault - Multi Unit Configuration settings are incorrect, Make sure only one unit is configured as the Master.
The failed inverter is off.
I have set the XW+5548 to be a Split Phase Stand Alone unit in Multi Unit Configuration, shortly after reboot it throws the same Fault.

Any thoughts?
Thanks

Click to expand...

If that doesn't work, try resetting the second inverter to factory settings.

400bird said:

You might need to remove the communication wiring (sync and xanbus), but it should work with the AC and DC wire connected

If that doesn't work, try resetting the second inverter to factory settings.

Click to expand...

OK, thanks! I will try that. I did pull the AC Sync cable but not the Xanbus cable.
That will happen this evening when I'm home....

Do (did) the inverters share power evenly?

400bird said:

You might need to remove the communication wiring (sync and xanbus), but it should work with the AC and DC wire connected

If that doesn't work, try resetting the second inverter to factory settings.

Click to expand...

So no luck with the communication cables. Everything is configured with the Xanbus bypassing the dead inverter and the AC Sync cable removed. Still getting F66.

Bajanmonkey said:

So no luck with the communication cables. Everything is configured with the Xanbus bypassing the dead inverter and the AC Sync cable removed. Still getting F66.

Click to expand...

This isn't the first time I've heard of difficult changing back from dual/multiple to single inverter operation. Did you try resetting to factory settings?

400bird said:

This isn't the first time I've heard of difficult changing back from dual/multiple to single inverter operation. Did you try resetting to factory settings?

Click to expand...

Not yet, time was against me and I want to make sure I have screenshots of all the settings first. Just in case. A lot of this is very new for me and I don't want to rush it. I did update the firmware to the latest available, no change. Will tackle it a little more this week. I'll share updates.