3801/3802/3805
DC overcurrent > Check generator
SMA · Sunny Boy Solar Inverter
What does 3801/3802/3805 mean?
An overcurrent condition has occurred at the DC input, causing the inverter to briefly interrupt feed-in operation as a protective measure. Frequent occurrences suggest issues with the PV array's design or wiring.
Common Causes
- Overcurrent at the DC input of the inverter.
- PV array has been incorrectly rated for the inverter's capacity.
- Incorrect wiring of the PV array, leading to excessive current.
Repair Steps & Checklist
Click steps to track your progress.
- 1
If this message is displayed frequently, ensure that the PV array has been correctly rated and wired according to the inverter's specifications.
Verified technical data. Last updated: March 2026
Related Faults
Source: SMA Sunny Boy Solar Inverter