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ErrorLib — Industrial Fault Code Library

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3601

Leakage current to ground in PV array or RisoCtlWarn threshold reached

SMA · SUNNY CENTRAL 500CP XT / 630CP XT Solar Inverter

What does 3601 mean?

A leakage current to ground has been detected in the PV array, or the threshold defined in parameter RisoCtlWarn has been reached. This indicates a potential insulation degradation or grounding issue.

Common Causes

  • Poor grounding or equipotential bonding.
  • Issues with module wiring or overall system design.
  • Parameter RisoCtlWarn set to an inappropriate value.

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Check the grounding and equipotential bonding connections in the PV system.

  2. 2

    Inspect the module wiring and review the system design for potential leakage paths.

  3. 3

    Verify the value set for parameter RisoCtlWarn.

Browse all codes in this manual (29)
Verified technical data. Last updated: April 2026

Related Faults

0103*Grid voltage is too high (redundant monitoring)0104*Grid voltage is too high (standard monitoring)0203*Grid voltage is too low (redundant monitoring)
Source: SMA SUNNY CENTRAL 500CP XT / 630CP XT Solar Inverter
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