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7105

7105 - Address setting error

Mitsubishi Electric · PUMY Air Conditioners

What does 7105 mean?

An error has been detected with the address settings of the connected indoor or outdoor units, causing the air conditioning system to automatically stop operating.

Common Causes

  • Incorrect or duplicate address settings for indoor or outdoor units.
  • Unassigned addresses or missing unit addresses.

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Note the 7105 code displayed on your remote controller or the outdoor unit's LED.

  2. 2

    Turn off the main power supply to the outdoor unit at the circuit breaker.

  3. 3

    Verify the address settings of all indoor and outdoor units according to your installation manual, ensuring no duplicates and correct configurations.

  4. 4

    Turn the main power supply back on.

  5. 5

    If the error persists, contact a qualified service technician to review and correct the addressing scheme.

Browse all codes in this manual (93)
Verified technical data. Last updated: April 2026

Related Faults

04030403 - Serial communication error11021102 — Compressor temperature trouble13001300 - Low pressure error
Source: Mitsubishi Electric PUMY Air Conditioners
Open Manual (Page 38)Search more codes in this manual