ErrorCodeDoctor
LG Air Conditioner CH01 error code
The CH01 error means your LG air conditioner detected a short or open circuit in the indoor pipe sensor — the component that monitors the temperature of the refrigerant pipe inside the indoor unit. This is an auto-stop protection error meaning the unit has shut itself down to prevent further damage. There are no DIY steps to resolve this error. The unit requires a professional repair service.
Common causes
- Short circuit in the indoor pipe temperature sensor
- Open circuit in the indoor pipe sensor wiring
- Indoor pipe sensor has failed
How to fix it
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1
There are no user-serviceable steps for this error
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2
Unplug the unit and do not attempt to use it
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3
Contact a qualified technician for sensor inspection and replacement
Related LG Air Conditioner error codes
CH01 error — frequently asked questions
What does the CH01 error mean on a LG air conditioner?
A fault was detected in the indoor pipe temperature sensor
What causes the CH01 error?
The CH01 error is usually caused by: Short circuit in the indoor pipe temperature sensor; Open circuit in the indoor pipe sensor wiring; Indoor pipe sensor has failed.
Can I fix the CH01 error myself?
This is rated a hard fix — it often requires tools, parts, or experience, and may be safer left to a professional technician.
How much does it cost to fix the CH01 error?
Fixing the CH01 error on a LG air conditioner typically costs $80–$200, depending on parts and whether you do it yourself or hire a technician.
Is it safe to keep using my air conditioner with the CH01 error?
We'd recommend addressing the CH01 error before continuing to use the air conditioner, since hard-rated issues often involve a real fault rather than a minor glitch.