CodeRegistry
Brands
  1. Home
  2. Mitsubishi Heavy Industries
  3. R410A Systems
  4. E46
About·Privacy·Terms

CodeRegistry — Your global library for technical solutions.

For your safety: always follow the equipment manufacturer’s official manuals. CodeRegistry is an independent help site and is not affiliated with the brands listed here.

E46

E46 - Address settings conflict (automatic/manual/remote control addresses coexist)

Mitsubishi Heavy Industries · R410A Systems

What does E46 mean?

There is a conflict in address settings where automatic, manual, and/or remote control addresses are coexisting on one network. This leads to communication issues in multi-unit systems.

Common Causes

  • Conflicting addressing methods used in the same system.
  • Incorrect manual address settings.
  • System setup error during commissioning.

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Turn off the entire system's power at the circuit breaker.

  2. 2

    Wait 30 seconds, then restore power.

  3. 3

    If you are an installer, verify and correct the address settings for all units to ensure consistency.

  4. 4

    Consult the installation manual for proper addressing procedures.

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

Related Faults

E0E0 - Transmitting/receiving signal errorE12E12 - Auto address setting error or unit addressed at factory settingE14E14 (Flashes 3 times) - Master/slave system control wiring error
Source: Mitsubishi Heavy Industries R410A Systems
Open Manual (Page 5)Search more codes in this manual