ErrorCodeDoctor
Daikin · Air Conditioner

Daikin Air Conditioner E5 error code

Difficulty: Hard · Cost: $300–$1500 · Duration: Requires professional service

The E5 error means your Daikin air conditioner's inverter compressor motor has overheated or is mechanically locked. This is a serious fault — the compressor is the heart of the refrigeration system. Contact a qualified technician urgently.

Common causes

  • Inverter compressor has locked mechanically
  • High differential pressure across the compressor
  • Defective inverter PCB
  • Incorrect UVW wiring connection
  • Defective connector contact

How to fix it

  1. 1

    Contact a qualified technician urgently to inspect the compressor and inverter PCB

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