Dead Inverter (SolarEdge SE7600H)?

[Jamessmith.0901]

The problem could be due to wiring issues, the inverter getting too hot, power supply issues or software problems with the system. It's best to contact SolarEdge technical support and explain the situation. They know their stuff and can help you solve the problem.

[TundraLu]

Back up and running today!

In total system was down for about 3-4 weeks, got the new inverter last Monday, but was out of town. Had a couple hours available today so I got to replacing it. Took about 2.5 hours total.

I had to disconnect the DC safety switch from the inverter, put the new inverter on, and then turn everything back on, pretty smooth process.

For anyone finding this in the future, make sure you take really good notes on which wires go where, lots of pictures. It's not terrible (9 wires in total), but would suck if you didn't know where something went.

Made 17.5Kw/hr so far today!

Congrats I just replaced my 7600Hd as well and am back to making power. Mine took less than a week to get an RMA.

[majorfriend]

Back up and running today!

In total system was down for about 3-4 weeks, got the new inverter last Monday, but was out of town. Had a couple hours available today so I got to replacing it. Took about 2.5 hours total.

I had to disconnect the DC safety switch from the inverter, put the new inverter on, and then turn everything back on, pretty smooth process.

For anyone finding this in the future, make sure you take really good notes on which wires go where, lots of pictures. It's not terrible (9 wires in total), but would suck if you didn't know where something went.

Made 17.5Kw/hr so far today!

[darkskies]

Great! They are pretty slow for sure. Looking forward to see how you make out.

[majorfriend]

Just an update for anyone following:
After a couple days SolarEdge got back to me and asked for some photos and a couple additional questions. I sent those over to them on Friday and today they approved the RMA for the inverter.

Not a bad support experience, a little slow, but no need to be on the phone for hours so I appreciate that.

I'll update again once we get the new inverter and get it installed.

[Calsun]

I would start by checking all the configuration settings to be sure that they are still in place. If they are not correct the inverter can have all manner of problems working. Not at all unusual for electronics to fail early on and that is why a warranty is important.

For future reference I chose to replace my Sunpower inverter (made by Sonny Boy) with a Solis inverter that has support for wifi to my home router. The tech support people at Solis can access the inverter remotely to do troubleshooting. I can check its status with my iPhone which is also handy.

[majorfriend]

Thanks for the advice Mike and darkskies, good to know what I'm getting into.

[Mike 134]

X2 on Solar Edge having a habit of a reply then calling it "case closed". My issue was corrupted data on the "dashboard page" of the monitoring site showing my small 7.2KW system generating 7MW of power in one month. Yet other tabs such as the layout page showed the correct values. They kept saying it was on my end yet some of their site had the correct values while the dashboard did not. Then one day POOF it all worked as it should and has ever since.

My point squeaky wheel gets the grease don't give up.

[darkskies]

They're customer service is very slow, in general. I've opened many cases and they take around a week to respond. They also have two (awful) habits on cases. One is that they will USUALLY reply and then close the case, instead of waiting for a confirmation as to whether or not you think the issue is resolved. The other is that for a problem where there is not a resolution, they will apologize and "appreciate" your patience, but will close the case, rather than leaving it open until resolved.

Case in point is the generator integration with the Backup Interface that I've been nagging them for over two years on. After three or four cases of them replying that it works and then closing the case, they will eventually say that it isn't working yet and that it will be available "in the near future", and then close the case. I can't express how poor their customer service is. Once and a while, you'll get a knowledgeable person who will prompt;y fix the issue, but that's typically an outlier.

Fair warning...

[majorfriend]

Haha, I assume they will have a human reach out, but I haven't heard anything yet. Might need to call in if they don't get back to me in the next few days.

[scrambler]

If they are going to replace the inverter under warranty based on the diagnostic of a chatbot, why not....

[darkskies]

, but al least you have a course of action to take. Let us know how you make out.

[majorfriend]

Thank you both.
Scrambler, yes I did check each optimizer, panel, and connection. All appears to be fine there.

Based on getting the 18xB7 error and this from the chat bot on the SolarEdge site, it would seem that a new inverter is in my future:

"Virtual assistant said :
If you are seeing error 18xB5 through 18xB9 please do the following:
Virtual assistant said :
Please upgrade the inverter's firmware to ensure that the DSPs are '900' or higher
Virtual assistant said :
Reselect the Country Code for whatever grid you are using - US240V etc.
Virtual assistant said :
If the error persists and the inverter does not produce power at all, the inverter will need to be RMA'd."

[darkskies]

From the monitoring site, I can create reports per module, that shows current, energy, module voltage, optimizer voltage, and power over time. I can look at one of those over all modules, or two per module. Here is one module, from today:


Screenshot 2023-08-23 at 8.52.11 PM.pngScreenshot 2023-08-23 at 8.52.55 PM.pngScreenshot 2023-08-23 at 8.53.24 PM.png

I have some shading on this module in the morning. In the layout screen you can look at the power for the modules over each day, in 15 min intervals. For example:

Screenshot 2023-08-23 at 8.58.24 PM.png

[scrambler]

Basic question, but have you checked continuity of the connection between the panels and the inverter, is case one of them fell apart or blew up?