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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.

2039

Output Overcurrent

Huawei · SUN2000 Solar Inverter

What does 2039 mean?

The SUN2000's transient output current exceeds its upper threshold, triggering protection, typically due to a dramatic drop in grid voltage or a short circuit in the power grid. This protects the inverter from excessive current.

Common Causes

  • The power grid voltage drops dramatically.
  • The power grid is short-circuited.
  • The SUN2000 transient output current exceeds the upper threshold.

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Check whether the output is short-circuited.

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 70)Search more codes in this manual