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E5

E5 - Inverter compressor lock or overheating

Daikin · Air Conditioning

What does E5 mean?

The inverter compressor has either locked up or is overheating.

Common Causes

  • Inverter compressor locked.
  • Compressor windings too hot.
  • Electrical issues.

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Turn off the unit and allow it to cool down for at least 30 minutes.

  2. 2

    Ensure the outdoor unit's fan is operating correctly.

  3. 3

    If the compressor is locking or overheating repeatedly, professional service is required to diagnose the cause (e.g., refrigerant charge, electrical fault).

Browse all codes in this manual (79)
Verified technical data. Last updated: April 2026

Related Faults

A0A0 - External protection activeA1A1 - Indoor PCB failureA2A2 - Malfunction of freezing protection
Source: Daikin Air Conditioning
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