How to Troubleshoot Solar Charge Controllers | Tutorial by EPEVER

[@MrAndBog247]

i like your support ...

[@Epever]

We appreciate your feedback! 🙌 Feel free to reach out anytime-we're here to assist!

[@pimentafera1511]

👏🏻👏🏻👏🏻👍🏻

[@Epever]

Thank you so much! 🙌 We're glad you found it helpful. Stay tuned for more!

[@racingtogreen2023]

Did you guys take solar guardian down again? Think is last straw. Going to need to replace it with a victron.

[@Epever]

Hi there, we sincerely apologize for the inconvenience caused. The server issue has been resolved, and your devices should have automatically come back online. If any of your devices are still not online, please don’t hesitate to contact us at [e-mail]. We’ll assist you immediately to ensure everything is working properly. We truly value your feedback and are committed to providing a better experience. Thank you for your understanding!

[@fratermus5502]

Perhaps you could do one where the EpEver MPPT algorithm crashes Vpanel to Vbatt+1v when a cloud passes or load added, and won't recover until PV input is cut and restored. Even then it might not work; you can watch the controller go right past the array Vmp and get stuck at Vbatt+1. *Countless* videos of that behavior on youtube, including my own (YsULwfFq4Pg). I saw it on all 4 of my Epever+array combos (Model numbers from memory: 2x 5215AN, .4215N, 1210A.) In my own video the controller took ~13mins to find Vmp (~90.9v) , after which is crashes down to Vbatt+1v *again*. The day of that video was the final straw; I ordered controllers from a competitor and have had *zero* issues with the *exact same arrays and wiring* . Only changed out the EpEver controllers. Yes, I contacted support. No, they did not understand the issue (or pretended not to). I predict any reply to this comment will be "please contact support". No. I binned your controllers and no longer recommend them to others.

[@Epever]

Hi there, we sincerely apologize for the frustration you’ve experienced with our products. While we strive for the best performance, we acknowledge that issues like MPPT tracking inaccuracies can sometimes occur. In our experience, such cases are often influenced by factors such as the charging state of the device, battery type and parameters, PV configuration, weather conditions, and overall system setup. To effectively resolve this kind of issue, it’s crucial to first identify the root cause. That’s why we previously recommended contacting our support team for a one-on-one assessment tailored to your system’s specifics. We want to assure you that we never abandon our customers and always do our utmost to address their concerns. Your feedback is invaluable in helping us improve. If you’re willing to share more details, we’d be happy to revisit your case and investigate further. Thank you for bringing this to our attention.

[@fratermus5502]

@@Epever Thank you for the thoughtful response. > Your feedback is invaluable in helping us improve. I'm a nobody on YT and no longer own/use EpEver gear for the reasons stated previously. But I want EpEver to succeed, and I want people to have access to iexpensive, functional MPPT. You might want to follow up with Adam Welch who knows what he is talking about and and has a following of clueful viewers. In one of his videos: kzbin.info/www/bejne/j6DamHV5oZZ5Z6ssi=ijvy8iEOPTFnDVzt&t=181 he shows data from the controller where Vpanel crashed right down to ~Vbatt+1v in challenging insolation. Yes, harvest will be decreased in poor conditions. No, the MPPT algo shouldn't crash so hard it's making next-to-nothing. Also read the comments -- he's not the only one seeing it. Another clear example: kzbin.info/www/bejne/gWGvpoCJjbCCZq8 Again, read the comments. These are not cases in which Vpanel has crashed due to low irradience. We know this because disconnecting/reconecting the panels demonstrates the algo can sweep all the way from normal Voc, through the the entire curve, then right past Vmp on its way down to Vbatt+1v. Incredibly frustrating.

[@Epever]

@@fratermus5502 Thank you for sharing your insights and the video examples. We’ll review the specific scenarios you mentioned and the related feedback in the comments. Your input provides valuable perspectives on areas we can improve, and we truly appreciate the effort you’ve taken to bring this to our attention.