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ErrorLib — Industrial Fault Code Library

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2001

High string input voltage

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

What does 2001 mean?

The PV array is not properly configured, with too many PV modules connected in series, causing the PV string open-circuit voltage to exceed the maximum SUN2000 operating voltage. This can damage the inverter.

Common Causes

  • Excessive PV modules are connected in series to the PV string; therefore the PV string open-circuit voltage exceeds the maximum SUN2000 operating voltage.

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Reduce the number of PV modules connected in series to the PV string until the PV string open-circuit voltage is less than or equal to the maximum SUN2000 operating voltage.

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

Related Faults

2002DC arc fault2003DC arc fault2011String reverse connection
Source: Huawei SUN2000-(3KTL-10KTL)-M1 Solar Inverter
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