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ErrorLib — Industrial Fault Code Library

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E112

Unit Address Conflict (Factory Setting) / Auto Address Not Possible

Mitsubishi Electric · FR-D700 Inverter

What does E112 mean?

One or more units (indoor or outdoor) are still addressed at 48 or 49 (factory setting). This prevents auto-addressing, which is only possible on a single KX2 system, if one or more units (either indoor or outdoor) are not set at 49.

Common Causes

  • Unit address is set to a factory default value that conflicts with other units.
  • Automatic address assignment failed due to network congestion or interference.
  • Conflicting unit addresses detected on the system.
  • Master controller unable to assign a unique address.
  • Address setting switch (DIP switch) incorrectly configured.

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Verify the address settings of all indoor and outdoor units.

  2. 2

    Ensure that for auto-addressing on a single KX2 system, all units are initially set to address 49.

Browse all codes in this manual (78)
Verified technical data. Last updated: April 2026

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Source: Mitsubishi Electric FR-D700 Inverter
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