LG AC Error Code CH61: Causes, Fixes, and Troubleshooting Guide
LG AC showing CH61 error? Learn what it means, why it happens, and how to fix it step by step.
ERROR CODES
3/19/20261 min read
Your LG air conditioner suddenly stops working, and CH61 appears on the display.
It can be confusing. But here’s the truth:
This error usually points to an overheating issue in the outdoor unit.
The system is protecting itself from damage.
Let’s understand it clearly so you can fix it fast.
What Is LG AC Error Code CH61?
LG AC error code CH61 indicates high temperature in the outdoor unit’s heat sink or compressor area.
In simple words:
👉 Your AC is getting too hot to operate safely.
Common Causes of CH61 Error
Here are the most common reasons behind this issue:
1. Dirty Condenser Coils
Dust blocks airflow
Heat cannot escape
Temperature rises quickly
2. Faulty Cooling Fan (Outdoor Unit)
Fan not spinning properly
Heat buildup inside the unit
3. Poor Ventilation
Outdoor unit placed in a closed or tight space
No proper air circulation
4. High Ambient Temperature
Extremely hot weather
AC working under heavy load
5. Heat Sink Sensor Issue
Faulty temperature sensor
Incorrect readings triggering the error
6. Voltage Fluctuation
Low or unstable voltage
Causes overheating in components
How to Fix LG AC Error Code CH61
Follow these steps one by one:
Step 1: Turn Off and Let It Cool
Switch off the AC
Turn off the main power
Wait 15–20 minutes
👉 This allows the system to cool down.
Step 2: Clean the Outdoor Unit
Remove dust from condenser coils
Use a soft brush or air blower
Clean coils = better heat release.
Step 3: Check Outdoor Fan
Ensure the fan is spinning
Listen for unusual noise
If not working, it may need repair or replacement.
Step 4: Improve Ventilation
Make sure outdoor unit has open space
Remove obstacles around it
Step 5: Check Power Supply
Use a voltage stabilizer
Avoid running AC during heavy fluctuations
Step 6: Inspect Sensor (Advanced)
Heat sink sensor may be faulty
Requires technician check
Warning Signs You Should Not Ignore
Call a technician immediately if:
Fan is not running
AC shuts down repeatedly
Burning smell appears
Error comes back quickly after reset
Final Thoughts
LG AC error code CH61 is a protective shutdown due to overheating.
Most of the time, simple fixes like cleaning and improving airflow solve the problem.
If not, a technician can quickly handle sensor or fan issues.
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