LG AC Error Code CH67: Meaning, Causes, and How to Fix It
LG AC error code CH67 indicates a fan motor or outdoor unit malfunction. Learn the meaning, causes, troubleshooting steps, and when to call a technician.
ERROR CODES
3/4/20262 min read
What Is LG AC Error Code CH67?
When your LG air conditioner displays error code CH67, it usually indicates a problem with the outdoor unit fan motor or related components.
The outdoor fan is responsible for releasing heat from the condenser. If the fan stops working or runs abnormally, the AC system cannot maintain proper cooling. To protect the compressor and other internal parts, the system stops operation and shows the CH67 error code.
This error is most commonly found in LG inverter split air conditioners.
Signs That Appear With CH67 Error
You may notice some additional symptoms along with the CH67 code:
AC suddenly stops cooling
Outdoor unit fan not spinning
AC turning off automatically
Loud or unusual noise from the outdoor unit
These signs indicate that the outdoor unit cannot operate properly.
Main Causes of LG AC Error Code CH67
1. Outdoor Fan Motor Failure
The most common cause is a faulty outdoor fan motor. If the motor stops working, heat cannot be released from the condenser.
2. Blocked Outdoor Fan
Dust, debris, or leaves may block the fan blades, preventing them from rotating properly.
3. Wiring Problems
Loose or damaged wires between the fan motor and control board can interrupt operation.
4. Faulty Control Board (PCB)
The outdoor unit PCB controls the fan motor. If this board fails, the fan may stop working.
Step-by-Step Troubleshooting
You can try these basic steps before calling for service.
Step 1: Turn Off the Air Conditioner
Use the remote to switch off the AC.
Step 2: Disconnect the Power
Turn off the circuit breaker or main power supply connected to the AC.
Step 3: Wait 10–15 Minutes
Allow the internal system to reset.
Step 4: Turn the AC Back On
Restore power and start the AC again.
If the error disappears, it may have been a temporary system protection issue.
When You Should Call a Technician
If the CH67 error continues, professional inspection is required.
A technician may perform the following checks:
Inspect the outdoor fan motor
Test fan motor wiring connections
Examine the outdoor PCB board
Replace faulty components if necessary
Because this repair involves electrical parts, it should be handled by a trained technician.
Maintenance Tips to Avoid CH67 Error
Regular maintenance can reduce the risk of this error.
Helpful tips include:
Keep the outdoor unit clean and free of debris
Schedule annual AC servicing
Ensure proper installation and wiring
Protect the unit from extreme dust and dirt
Maintaining the outdoor unit helps your air conditioner operate smoothly.
Conclusion
The LG AC error code CH67 typically indicates a problem with the outdoor fan motor or its related components. While a simple reset may clear the error in some cases, persistent issues usually require professional repair.
Addressing the problem early can prevent compressor damage and keep your air conditioner running efficiently.
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