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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.

2035

Unbalanced Grid Voltage

Huawei · SUN2000 Solar Inverter

What does 2035 mean?

The difference between grid phase voltages exceeds a specified upper threshold. This indicates an imbalance in the three-phase power supply, which can affect inverter operation and grid stability.

Common Causes

  • The difference between grid phase voltages exceeds the upper threshold.
  • The power grid may be abnormal temporarily.
  • The connection between the AC switch and the output power cable is faulty.

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Check whether the grid voltage is within the acceptable range.

  2. 2

    Check the connection between the AC switch and the output power cable.

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 69)Search more codes in this manual