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. 1

    If this message is displayed frequently, ensure that the PV array has been correctly rated and wired according to the inverter's specifications.

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Verified technical data. Last updated: March 2026

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Source: SMA Sunny Boy Solar Inverter