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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.

0127

Main contactor not energized

Kone · V3F25/18 drive

What does 0127 mean?

An emergency stop or a main contactor time out (2 seconds) occurs with the V3F25/18 drive. This fault indicates that the main contactor failed to energize within the expected timeframe.

Common Causes

  • Issues within the circuits of the main contactor (MC_SUP LED).

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Check the circuits of the main contactor (monitor MC_SUP LED status).

Browse all codes in this manual (20)
Verified technical data. Last updated: April 2026

Related Faults

0101Drive stop0102Motor overcurrent0103Damaged Braking resistor or electrical circuits
Source: Kone V3F25/18 drive
Open Manual (Page 40)Search more codes in this manual