Solar · Error codes
What do SMA Event 6501 overtemperature and 8003 temperature derating mean?
Short answer
SMA Event 6501 means the inverter switched off because it got too hot; Event 8003 means it reduced power for more than ten minutes because of heat. Keep the inverter uncovered and out of trapped heat. SMA says the cooling fins should be cleaned with a soft brush; ask your installer if it's hard to reach.
Last checked 24 September 2026 · 1 source
In more detail
- Events 6502, 6509 and 6511 are related overtemperature events.
- Output recovers automatically as the unit cools.
The facts, dated
- 01SMA Event 8003: power reduced >10 minutes due to excessive temperature — 8003 event
manufacturer · n/a · checked 24 September 2026 · files.sma.de
Sources
- files.sma.de — files.sma.de/downloads/SBxx-1AV-41-BE-en-21.pdf
Last checked: 24 September 2026