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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.

2066

License Expired

Huawei · SUN2000 Solar Inverter

What does 2066 mean?

The privilege certificate for the SUN2000 has entered its grace period or the privilege feature is about to become invalid. This indicates an impending loss of certain functionalities due to license expiration.

Common Causes

  • The privilege certificate has entered the grace period.
  • The privilege feature will be invalid soon.

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Apply for a new certificate.

  2. 2

    Load the new certificate.

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 72)Search more codes in this manual