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).

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Verified technical data. Last updated: March 2026

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Source: Kone V3F25/18 drive
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