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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.

2034

Grid Overvoltage

Huawei · SUN2000 Solar Inverter

What does 2034 mean?

The power grid voltage has exceeded the upper threshold, or the overvoltage duration has exceeded the value specified by HVRT (High Voltage Ride Through). This indicates an unstable or excessively high grid supply.

Common Causes

  • The power grid voltage is beyond the upper threshold.
  • The overvoltage duration exceeds the value specified by HVRT.
  • The power grid may be abnormal temporarily.
  • The grid overvoltage protection threshold is set incorrectly.
  • The peak voltage of the power grid is too high.

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Check whether the grid voltage is within the acceptable range.

  2. 2

    Log in to the mobile phone app, SmartLogger, or NMS to modify the grid overvoltage protection threshold with the consent of the local power operator.

  3. 3

    Check whether the peak voltage of the power grid is too high.

Browse all codes in this manual (33)
Verified technical data. Last updated: April 2026

Related Faults

2001High String Input Voltage2002DC Arc Fault2003DC arc fault
Source: Huawei SUN2000 Solar Inverter
Open Manual (Page 68)Search more codes in this manual