ErrorCodeDoctor
Daikin · Air Conditioner

Daikin Air Conditioner H8 error code

Difficulty: Hard · Cost: $150–$450 · Duration: Requires professional service

The H8 error means your Daikin air conditioner detected a fault in the compressor input current transformer (CT) system — used to measure the electrical input to the compressor. This can be caused by a defective power transistor, a defective reactor, faulty inverter system wiring, or a defective outdoor unit PCB. Contact a qualified technician.

Common causes

  • Defective power transistor
  • Defective reactor
  • Faulty wiring of the inverter system
  • Defective outdoor unit PCB

How to fix it

  1. 1

    Contact a qualified technician to inspect the CT system and inverter wiring

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