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A8

A8 - Power supply failure

Daikin · Air Conditioning

What does A8 mean?

There is an issue with the power supply to the indoor unit.

Common Causes

  • Over current of AC input.
  • Defect in the power supply.

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Check the power supply voltage to the unit.

  2. 2

    Ensure all electrical connections are secure.

  3. 3

    If the power supply is unstable or the error persists, consult a qualified electrician or HVAC 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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