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ErrorLib — Industrial Fault Code Library

Disclaimer: ErrorLib is an independent technical reference tool. While we aim for accuracy, always verify with the manufacturer’s official service manuals before performing maintenance on industrial equipment. ErrorLib is not affiliated with the brands listed.

101

Grid fault

SMA · Sunny Boy Solar Inverter

What does 101 mean?

The grid voltage or grid impedance at the inverter's connection point is too high, leading to the inverter disconnecting from the utility grid. This action prevents damage to the inverter and helps maintain overall power quality.

Common Causes

  • Grid voltage at the connection point is permanently too high.
  • Grid impedance at the connection point is too high.
  • Local grid conditions causing voltage to be outside the permissible range.

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Check whether the grid voltage at the connection point of the inverter is permanently within the permissible range.

  2. 2

    If grid voltage is outside permissible range due to local grid conditions, contact the grid operator for adjustment or change of operating limits.

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

Related Faults

10252[Interface]: communication disrupted10253[Interface]: connection speed goes to [100 Mbit / 10 Mbit]10254[Interface]: duplex mode goes to [Full / Half]
Source: SMA Sunny Boy Solar Inverter
Open Manual (Page 64)Search more codes in this manual