ErrorCodeDoctor
Daikin · Air Conditioner

Daikin Air Conditioner A8 error code

Difficulty: Hard · Cost: $80–$300 · Duration: Requires professional service

The A8 error means your Daikin air conditioner detected a power supply fault or overcurrent on the AC input to the indoor unit. This can be caused by a defective power supply voltage, a defective connection on the signal line, or incorrect wiring. Contact a qualified technician to inspect the power supply and wiring.

Common causes

  • Defective power supply voltage
  • Defective connection on signal line
  • Defective wiring

How to fix it

  1. 1

    Contact a qualified technician to inspect the indoor unit power supply and wiring

Related Daikin Air Conditioner error codes

1

A0

An external protection device connected to the indoor unit has been activated

hard
2

A1

A fault was detected in the indoor unit PCB (control board)

hard
3

A3

The drain level control system has detected an abnormality — drain may be clogged

medium
4

A5

Freeze-up protection (cooling) or high pressure control (heating) has activated — check the air filter

easy