I have a Growatt SPF 5000 US that reads 0v output. The EG4-LifePower4 Lithium Battery 48V 100AH battery reads 51.1v. The output is going thru a Growatt auto transformer. It was working well for a couple months. When I got home this evening, there was no power. I shut everything down and rebooted. Nothing, not fault code or anything. The only thing on the panel showed solar in and the battery voltage. I thought I would come here and ask for any ideas since I have had terrible experience with Signature Solar tech support. Plus I would have to take off of work since they are no open on Saturdays. Any help is appreciated. Thanks in advance.