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ErrorLib — Industrial Fault Code Library

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34

Internal Bus Communication

Kone · CMXC-022 Frequency Control Upgrade Kit

What does 34 mean?

An internal bus error has occurred, indicating a communication issue between internal components of the R&M Materials Handling Frequency Converter. This prevents proper data exchange and operation of the drive.

Common Causes

  • Internal bus error within the frequency converter

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Switch off the supply voltage to the frequency converter

  2. 2

    If the fault recurs after power cycling, replace the inverter

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 52)Search more codes in this manual