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ErrorLib — Industrial Fault Code Library

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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.

Browse all codes in this manual (23)
Verified technical data. Last updated: April 2026

Related Faults

101Grid fault10252[Interface]: communication disrupted10253[Interface]: connection speed goes to [100 Mbit / 10 Mbit]
Source: SMA Sunny Boy Solar Inverter
Open Manual (Page 52)Search more codes in this manual