ErrorCodeDoctor
Daikin · Air Conditioner

Daikin Air Conditioner M8 error code

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

The M8 error means your Daikin air conditioner system detected a transmission fault between optional controllers for centralized control. This can be caused by a power disconnection of another centralized control unit, the reset switch being on, defective wiring, or a central remote controller address change. Contact a qualified technician.

Common causes

  • Another centralized control unit lost power
  • Centralized control reset switch is ON
  • Defective transmission wiring
  • Central remote controller address was changed

How to fix it

  1. 1

    Contact a qualified technician to inspect the centralized control wiring and address settings

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