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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.

3

Earth Fault

Kone · CMXC-022 Frequency Control Upgrade Kit

What does 3 mean?

An earth fault has been detected by the R&M Materials Handling Frequency Converter, indicating a short circuit in the system wiring or a failure within the motor. This condition poses an electrical safety risk and can cause damage to equipment if not resolved.

Common Causes

  • Short circuit in the system wiring
  • Motor failure

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Check and repair any short circuits in the wiring

  2. 2

    Check the motor for damage or malfunction

Browse all codes in this manual (40)
Verified technical data. Last updated: April 2026

Related Faults

1Overcurrent13Under temperature14Overtemperature
Source: Kone CMXC-022 Frequency Control Upgrade Kit
Open Manual (Page 51)Search more codes in this manual