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L5

L5 — Output overcurrent detected

Daikin · Air Conditioner

What does L5 mean?

This code indicates that the unit's output current has exceeded safe operating limits. This is a protective shutdown.

Common Causes

  • Electrical fault in the output stage
  • Overload condition
  • Short circuit

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Turn off the unit at the circuit breaker.

  2. 2

    Wait for a few minutes before turning it back on.

  3. 3

    If the code reappears, contact a service technician as there is likely an electrical issue.

Browse all codes in this manual (40)
Verified technical data. Last updated: April 2026

Related Faults

0000 — Normal operationA1A1 — Indoor unit PCB defect detectedA5A5 — High pressure or freeze-up protector activated
Source: Daikin Air Conditioner
Open Manual (Page 31)Search more codes in this manual