My dad just got an EG4 6000 and has been using it in our garage for about a week. We set it up in an off-grid configuration, but we're also using a 15A grid power backup. We have four 580W solar panels, so charging our Ruixu 51V 100AH battery shouldn't be a problem, but it is. The solar power produced just covers most of our load, so the battery keeps draining. The inverter tries to switch to AC but clicks and shuts down, which is frustrating because it's sunny at 8 AM! I have to turn off the load breaker to get AC charging, and I can't figure out why. Can anyone help me understand what's going wrong?
5 Answers
It seems like you might have some expectations misaligned with how the system interacts. At 8 AM, you might be getting around 5-10% of output due to factors like irradiance and panel efficiency, meaning even in direct sunlight, the actual output could be less than expected. Your string of panels needs to be ideally positioned to maximize power; otherwise, you could face significant losses. Plus, if your loads are about 200W per hour, even in perfect conditions, you could drain the battery quickly. Have you checked if you're using the monitoring app? It can provide real-time data on performance and usage!
Exactly! It's all about optimizing those panels first.
If you're running on AC, be sure your AC power can handle your loads while also charging the batteries. 15A at 240V might not cut it for everything you have going on. Plus, double-check your settings to ensure your system is set to pull from the grid, especially since you’re trying to use AC while needing to off-grid charge.
It sounds like your system's AC input is limited to 120V, but the EG4 6000 is designed for 240V split phase. If you feed it only 120V, you're restricting it to just one leg, which might not be enough for your setup.
Sounds like the system might not really be in off-grid mode. If it's set to off-grid, it won't draw any power from AC, which might be part of your problem. Make sure you've got that configured right.
Check the voltage from your solar panels. I had similar issues with dropping voltage under load. The MPPT controller needs a minimum of 120V to function optimally. If your panels drop below this due to heat or load, it won't pull the necessary amps. After upgrading my setup to include more panels in series, I saw a massive increase in output. Might be worth trying for you too!
That's a good point! I find the app super helpful for tracking these kinds of issues.