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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.

LOCD

Password locked

Mitsubishi Electric · Mitsubishi FR-E800 Variable Frequency Drive

What does LOCD mean?

The password function is active, restricting the display and setting of parameters. This security feature prevents unauthorized access and modification of the inverter's configuration.

Common Causes

  • Incorrect password entered multiple times, locking access to parameters.
  • Security lockout due to excessive failed login attempts.

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Enter the correct password in Pr.297 (Password lock/unlock) to unlock the password function before attempting operations.

Browse all codes in this manual (55)
Verified technical data. Last updated: April 2026

Related Faults

CFContinuous operation during communication faultDIPDuplicate IP addressE.1Option Fault / Internal Contact Failure
Source: Mitsubishi FR-E800 Variable Frequency Drive
View Official PDFSearch more codes in this manual