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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.

E46

Address Setting Conflict

Mitsubishi Electric · R410A Systems

What does E46 mean?

A conflict exists in the address settings of units on the network. This specifically occurs when a combination of automatic, manual, or remote control addressing modes are simultaneously used on one network, disrupting communication.

Common Causes

  • Multiple indoor units assigned the same address (e.g., SW4 settings).
  • Address setting conflict detected by the outdoor unit's controller.
  • Improper setup of address switches or remote controller settings.

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Review all indoor and outdoor unit address settings to ensure a consistent addressing method (e.g., all manual, or all auto where supported).

  2. 2

    Verify that there are no duplicate addresses assigned to any unit on the network.

  3. 3

    Refer to the system installation manual for proper addressing procedures for the specific system configuration.

Browse all codes in this manual (60)
Verified technical data. Last updated: April 2026

Related Faults

E0Transmitting/Receiving Signal ErrorE112Auto Addressing Conflict / Factory Address Setting ErrorE14Master/Slave System Configuration Error
Source: Mitsubishi Electric R410A Systems
Open Manual (Page 5)Search more codes in this manual