ErrorCodeDoctor
LG · Air Conditioner

LG Air Conditioner CH67 error code

Difficulty: Medium · Cost: $0–$150 · Duration: 10–15m

The CH67 error means your LG air conditioner's outdoor unit fan is not working correctly. The outdoor fan expels heat collected from inside your home to the outside environment. When it cannot spin the unit stops running to prevent the compressor from overheating. This code may also appear as EF on some models. Debris, snow buildup, or a foreign object lodged in the outdoor fan are the most common causes and are easy to check yourself. If no obstruction is found the fan motor will need professional inspection.

Common causes

  • Debris, leaves, or a foreign object blocking the outdoor fan blades
  • Snow or ice buildup around or inside the outdoor unit blocking the fan
  • Outdoor fan motor has malfunctioned or failed
  • Wiring fault affecting the outdoor fan motor

How to fix it

  1. 1

    Turn off and unplug the air conditioner or switch off the circuit breaker

  2. 2

    Inspect the outdoor unit for debris, leaves, snow, or ice blocking the fan blades

  3. 3

    Carefully remove any obstruction — never insert hands or tools while power is on

  4. 4

    If snow or ice is present allow it to melt naturally before restarting

  5. 5

    Restore power and restart the unit to check if the error clears

  6. 6

    If CH67 or EF persists with no visible blockage contact a technician to inspect the outdoor fan motor

Related LG Air Conditioner error codes

1

CH04

The indoor unit is not draining condensate water properly

easy
2

CH05

Communication between the indoor and outdoor units has been lost

medium
3

CH07

Two connected units are set to conflicting operating modes

easy
4

CH38

The air conditioner is low on refrigerant gas

hard

CH67 error — frequently asked questions

What does the CH67 error mean on a LG air conditioner?

The outdoor unit fan has detected a fault and cannot operate properly

What causes the CH67 error?

The CH67 error is usually caused by: Debris, leaves, or a foreign object blocking the outdoor fan blades; Snow or ice buildup around or inside the outdoor unit blocking the fan; Outdoor fan motor has malfunctioned or failed; Wiring fault affecting the outdoor fan motor.

Can I fix the CH67 error myself?

It's possible for a moderately handy person, but budget 10–15m and expect some disassembly.

How much does it cost to fix the CH67 error?

Fixing the CH67 error on a LG air conditioner typically costs $0–$150, depending on parts and whether you do it yourself or hire a technician.

Is it safe to keep using my air conditioner with the CH67 error?

In most cases yes, but it's best to address the CH67 error soon — see the fix steps below to resolve it.