I also would like to understand why it works and why it didn’t. Very weird 

But glad it works 

On Dec 23, 2025, at 11:54 AM, William Miller via RE-wrenches <[email protected]> wrote:


Friends:

I was pleasantly surprised to get a call-back from Outback with a familiar voice this morning. 

The inverter has been charging to only 52 VDC at no more than 700 watts since new. I had blamed the 3kW portable generator. We installed a new Kohler 12 kW Gen and the problem continued. 

I had tried all the suggestions to change re-bulk and re-float and even reset to factory defaults. Nothing helped. 

The OB tech suggested setting the Gen input to Backup and…. problem solved. 

I don’t know why but I won’t argue with success. 

Curiously I have another almost identical system that charges just fine on Generator setting. 

If anyone can explain this I’d really like to know. 

William Miller
Miller Solar.com
805-438-5600
www.millersolar.com
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