ErrorCodeDoctor
Daikin · Air Conditioner

Daikin Air Conditioner EA error code

Difficulty: Hard · Cost: $150–$500 · Duration: Requires professional service

The EA error means your Daikin air conditioner detected a fault with the four-way valve — the component that switches the refrigerant flow direction to change between cooling and heating modes. This can be caused by a defective four-way valve, a shortage of refrigerant gas, a defective outdoor unit PCB, or a defective thermistor. Contact a qualified technician.

Common causes

  • Defective four-way valve
  • Shortage of refrigerant gas
  • Defective outdoor unit PCB
  • Defective thermistor

How to fix it

  1. 1

    Contact a qualified technician to inspect the four-way valve and refrigerant system

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