What causes Trafo-Temp-F error on SMA WINDY BOY 3300 Inverter?
- JJoel ReedSep 15, 2025
The Trafo-Temp-F error on your SMA Inverter means that temperatures in the transformer have exceeded the permissible limit. If this problem recurs, check the heat dissipation of the inverter, as described in Section 8.2.















