ErrorCodeDoctor
Daikin · Air Conditioner

Daikin Air Conditioner CJ error code

Difficulty: Medium · Cost: $80–$200 · Duration: Requires professional service

The CJ error means your Daikin air conditioner detected a fault with the room temperature thermistor inside the remote controller. This sensor reads the room temperature at the remote controller location. Contact a qualified technician or dealer to replace the remote controller.

Common causes

  • Room temperature thermistor inside the remote controller is defective
  • Remote controller PCB has malfunctioned
  • External electrical noise affecting the remote controller

How to fix it

  1. 1

    Contact a qualified technician or dealer — the remote controller may need to be replaced

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