Error code - 103 - Grid voltage is too high.

Clifford P. Myers

Modified on: Tue, 12 Jul, 2022 at 12:43 PM

SMA Manual Recommendation -

Error No.	Explanation	Corrective measures
103	Line voltage is too high. Overvoltage detected by redundant monitoring.	Check the line voltage Check the grid connections Check stability of the utility grid. Make sure the external fuses function properly. Make sure the AC cable connections are securely connected.

Description - The system has detected excess voltage through the line.

Troubleshooting Actions - Inspect the voltage of line and the connection to the grid. AC connections to the grid need to be secure and without fault when in operation. Test line voltage for stability.

Work in Progress:

Thanks for using the Solar Support Portal. I'm sorry, but this article is still a work in progress. We are here to help, so please send us your notes by clicking "no" below and sharing your thoughts. We will use your feedback to improve our articles! Thanks so much for supporting us in supporting you!

Related Articles