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ErrorLib — Industrial Fault Code Library

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2002

DC arc fault

Huawei · SUN2000-(3KTL-10KTL)-M1 Solar Inverter

What does 2002 mean?

Arcing or poor contact exists in the PV string power cables for PV strings 1 and 2 (Cause ID 1) or PV strings 3 and 4 (Cause ID 2). This indicates an electrical safety hazard.

Common Causes

  • The PV string power cables arc or are in poor contact (PV1 and PV2).
  • The PV string power cables arc or are in poor contact (PV3 and PV4).

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Check whether the PV string cables arc or are in poor contact.

Browse all codes in this manual (24)
Verified technical data. Last updated: April 2026

Related Faults

2001High string input voltage2003DC arc fault2011String reverse connection
Source: Huawei SUN2000-(3KTL-10KTL)-M1 Solar Inverter
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