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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.

2002

DC Arc Fault

Huawei · SUN2000 Solar Inverter

What does 2002 mean?

An electrical arc has occurred in the PV string power cable, or there is poor contact within the DC wiring. This fault can lead to significant energy loss, equipment damage, and fire hazards.

Common Causes

  • The PV string power cable arcs.
  • The PV string power cable is in poor contact.

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Check whether the string cables arc.

  2. 2

    Check whether the string cables are in poor contact.

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

Related Faults

2001High String Input Voltage2003DC arc fault2011String Reversed
Source: Huawei SUN2000 Solar Inverter
Open Manual (Page 67)Search more codes in this manual