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7100

7100 - Over capacity

Mitsubishi Electric · Air Conditioning

What does 7100 mean?

This fault occurs when the system capacity settings exceed the allowed limits, indicated by R2 index exceeding 150% or Y index exceeding 130%.

Common Causes

  • System capacity setting too high
  • Incorrect index settings (R2 or Y)
  • Unit is undersized for the space

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Verify the system's capacity settings against the installation requirements.

  2. 2

    Check the R2 and Y index values.

  3. 3

    Consult the installation manual for correct capacity settings.

  4. 4

    Consider professional assessment if the unit seems undersized.

Browse all codes in this manual (170)
Verified technical data. Last updated: April 2026

Related Faults

0.5-second ON / 0.5-second OFF blinkUpper lamp blinks 0.5-second ON/OFF - Miswiring or serial signal error00Normal operation - No error codes1 beep during error display mode1 beep during error display mode - Unit has an error (different code)
Source: Mitsubishi Electric Air Conditioning
Open Manual (Page 14)Search more codes in this manual