ErrorCodeDoctor
LG · Air Conditioner
LG Air Conditioner CH61 error code
Difficulty: Medium
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Cost: $0–$100
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Duration: 15–30m
The CH61 error means your LG air conditioner has shut down due to overheating. In cooling mode the outdoor unit has reached a dangerously high temperature, usually because hot air cannot escape from the area around the unit. In heating mode the indoor unit has overheated, most often because a dirty or clogged filter is blocking airflow. This error is a safety protection and will not clear on its own — a manual power cycle is required after fixing the underlying cause. The code may also appear as P4, P6, P7, P8, or CH34 depending on the model.
Common causes
- Outdoor unit installed in a poorly ventilated enclosed balcony trapping hot air
- Ventilation window or insect screen around the outdoor unit is closed
- Clutter or objects piled around the outdoor unit blocking airflow
- Outdoor unit positioned too low relative to the ventilation window
- Indoor unit air filter is dirty or clogged restricting airflow during heating mode
How to fix it
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1
If in cooling mode check the outdoor unit — open any ventilation windows or insect screens nearby
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2
Clear any objects or clutter around the outdoor unit to allow hot air to escape freely
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3
If the outdoor unit is on an enclosed balcony consider installing an air guide to direct hot air outside
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4
If the outdoor unit sits below the ventilation window raise it with a stand so it aligns with the opening
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5
If in heating mode remove and clean the indoor unit air filter
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6
Once the ventilation or filter issue is resolved unplug the power cord or turn off the circuit breaker and wait 5 minutes
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7
Restore power to clear the error and restart the unit
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8
If CH61 keeps returning after fixing the ventilation and filter contact a technician for inspection