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EB

EB - Mis-wiring/loose interconnecting cables or noise interference

Mitsubishi Electric · Air Conditioning

What does EB mean?

Similar to EA, this fault suggests issues with wiring or cable specifications, or electrical noise impacting the system.

Common Causes

  • Mis-wired inter-connecting cables
  • Loose inter-connecting cables
  • Electrical noise interference
  • Incorrect cable size/spec

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Inspect all inter-connecting cables for proper installation and tightness.

  2. 2

    Ensure the correct cable size and specification are used.

  3. 3

    Minimize exposure to electrical noise sources.

  4. 4

    Securely fasten all cable connections.

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 16)Search more codes in this manual