ErrorCodeDoctor
Daikin · Air Conditioner

Daikin Air Conditioner L1 error code

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

The L1 error means your Daikin air conditioner detected a fault with the inverter PCB. This can be caused by defective compressor wiring, a defective outdoor unit fan motor, a blown fuse, or a defective inverter PCB itself. Contact a qualified technician.

Common causes

  • Defective compressor wiring
  • Defective outdoor unit fan motor
  • Blown fuse on the inverter PCB
  • Defective inverter PCB

How to fix it

  1. 1

    Contact a qualified technician to inspect the inverter PCB, compressor wiring, and fan motor

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