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L5

L5 - Inverter instantaneous DC over current

Daikin · Air Conditioning

What does L5 mean?

The inverter system experienced a sudden surge in DC over current.

Common Causes

  • Defect of the inverter PCB.
  • Compressor lock or winding issue.

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Turn off the unit and allow it to rest for 60 seconds before restarting.

  2. 2

    If the issue recurs, it suggests a problem with the inverter PCB or compressor.

  3. 3

    This requires diagnosis and repair by a qualified technician.

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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