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Error Code CH02

LG Air Conditioner

Severity: Critical

Source: OnlyErrorCodes.com — Every error code. One place.

LG Air Conditioner Error Code CH02 — Fix

What it means

LG Error Code CH02 means the indoor unit fan motor has a fault — it is either not running or running at the wrong speed.
A power reset is worth trying first, but CH02 usually requires a technician to replace the fan motor or indoor PCB.

Affected Models

  • LG Artcool Series
  • LG Dualcool Series
  • LG Standard Plus Series
  • LG DUALCOOL Premium

Common Causes

  • Indoor unit fan motor failed
  • Fan motor capacitor failed — motor cannot start
  • Indoor unit fan blade obstructed
  • Indoor PCB fan motor driver circuit fault

How to Fix It

  1. Perform a power reset.

    Turn the AC off at the remote and at the circuit breaker for 5 minutes.
    Restore power and switch on.
    If CH02 was triggered by a temporary motor stall, it may not return.

  2. Listen for the indoor fan.

    When the unit starts up, the indoor fan should spin and you should hear airflow within a few seconds.
    No airflow or a humming sound without movement confirms the fan motor is not running.

  3. Check for a physical obstruction.

    With the unit powered off, open the front panel and check that nothing has fallen into the fan housing.
    A foreign object jamming the fan wheel will cause CH02 and can also damage the motor.

  4. Do not run the unit with CH02 active.

    Operating the AC without a functioning indoor fan allows the evaporator coils to ice up and can cause compressor damage.
    Leave the unit off until the fan motor is repaired.

  5. Book an LG-authorised technician.

    Provide CH02 to the technician when booking.
    Fan motor replacement is a common LG repair and parts are generally readily available.

When to Call a Professional

Fan motor replacement inside the indoor unit requires disassembling the unit housing.
This is a professional repair — contact an LG-authorised service agent.

Frequently Asked Questions

How long does it take to fix LG Error CH02?

A fan motor replacement typically takes 1 to 2 hours on-site. If the part is not in stock, the technician may need to order it. Most LG dealers carry common fan motors for popular models.

Can CH02 damage the rest of my LG air conditioner?

Yes, if the unit is run without a working indoor fan, the evaporator will ice over and the resulting liquid refrigerant returning to the compressor can cause serious compressor damage. Switch the unit off and leave it off until repaired.