ErrorCodeDoctor
Daikin · Air Conditioner

Daikin Air Conditioner LC error code

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

The LC error means your Daikin air conditioner detected a communication failure between the outdoor unit control PCB and the inverter PCB. This can be caused by a defective connection between the PCBs, external noise, a defective inverter compressor, or a defective control PCB. Contact a qualified technician.

Common causes

  • Defective connection between the inverter PCB and the control PCB
  • External factors such as noise
  • Defective inverter compressor
  • Defective control PCB transmission block

How to fix it

  1. 1

    Contact a qualified technician to inspect the connection between the control PCB 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