Hi,
I have got a MPPT 75/15 which has always the blue light blinking, even when the battery is almost empty. The App shows that the solar panels are not generating power, but when I test the solar panel output with a small fan, they work perfectly. All the cables are connected properly and the panels are connected in serie. Also, the 20A fuse is still fine.
what can the problem be?
![25bca958-3062-47eb-a76a-ebedfeec7877.jpeg](/storage/attachments/21942-25bca958-3062-47eb-a76a-ebedfeec7877.jpeg)