ErrorCodeDoctor
Daikin · Air Conditioner

Daikin Air Conditioner U8 error code

Difficulty: Hard · Cost: $80–$250 · Duration: Requires professional service

The U8 error means your Daikin air conditioner detected a transmission fault between the main and sub remote controllers. This can be caused by a transmission error between the controllers, an incorrect connection between sub remote controllers, or a defective remote controller PCB. Contact a qualified technician.

Common causes

  • Transmission error between main and sub remote controller
  • Incorrect connection between sub remote controllers
  • Defective remote controller PCB

How to fix it

  1. 1

    Contact a qualified technician to inspect the remote controller wiring and PCBs

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