ErrorCodeDoctor
Daikin · Air Conditioner

Daikin Air Conditioner UE error code

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

The UE error means your Daikin air conditioner detected a transmission fault between the optional centralized control equipment and the indoor unit. This can also be triggered by a disconnected main controller setting connector, or a defective PCB in either the central remote controller or the indoor unit. Contact a qualified technician.

Common causes

  • Transmission error between centralized control equipment and indoor unit
  • Connector for setting the main controller is disconnected
  • Defective central remote controller PCB
  • Defective indoor unit PCB

How to fix it

  1. 1

    Contact a qualified technician to inspect the centralized control 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