ErrorCodeDoctor
LG · Air Conditioner

LG Air Conditioner CH10 error code

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

The CH10 error means your LG air conditioner's indoor unit fan has stopped working correctly. The indoor fan is responsible for drawing warm air from the room across the cooling coil and circulating conditioned air back out. When it cannot spin properly the unit stops running to prevent damage. This code may also appear as E6 on some models. The most common cause is a physical obstruction blocking the fan. If no blockage is found the fan motor will need to be inspected by a technician.

Common causes

  • Debris, dust buildup, or a foreign object blocking the indoor fan blades
  • Indoor fan motor has malfunctioned or failed
  • Wiring fault affecting the indoor fan motor
  • Fan blade is cracked or damaged causing it to jam

How to fix it

  1. 1

    Turn off and unplug the air conditioner

  2. 2

    Inspect the indoor unit for any visible debris, dust buildup, or objects blocking the fan

  3. 3

    Carefully remove any obstruction you find

  4. 4

    Plug the unit back in and restart to see if the error clears

  5. 5

    If CH10 or E6 persists with no visible blockage contact a technician to inspect the 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

CH10 error — frequently asked questions

What does the CH10 error mean on a LG air conditioner?

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

What causes the CH10 error?

The CH10 error is usually caused by: Debris, dust buildup, or a foreign object blocking the indoor fan blades; Indoor fan motor has malfunctioned or failed; Wiring fault affecting the indoor fan motor; Fan blade is cracked or damaged causing it to jam.

Can I fix the CH10 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 CH10 error?

Fixing the CH10 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 CH10 error?

In most cases yes, but it's best to address the CH10 error soon — see the fix steps below to resolve it.