ErrorCodeDoctor
Daikin · Air Conditioner

Daikin Air Conditioner AF error code

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

The AF error means your Daikin air conditioner detected a fault with the optional humidifier unit accessory. This can be caused by the humidifier unit leaking, defective drain piping with an upward slope, or a defective indoor unit PCB. Contact a qualified technician to inspect the humidifier and drain piping.

Common causes

  • Humidifier unit (optional accessory) is leaking
  • Drain piping has an upward slope or is defective
  • Defective indoor unit PCB

How to fix it

  1. 1

    Contact a qualified technician to inspect the humidifier unit and drain piping

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