If your air conditioner displays error codes CH01, CH02, CH06, CH12, CH41, CH42, CH43, CH44, CH45, CH46, CH47, CH48, E1, E2, E3, E7, E8, F2, or F3, it indicates a problem with a sensor.
Error codes CH21, CH23, CH26, CH29, and E9 indicate a problem with the outdoor unit compressor or circuit board.
To clear the error, reset your air conditioner. If the error code persists, contact LG Support for service.
Your air conditioner displays an error code when its self-diagnostic system detects a problem with an internal component. To prevent damage, your air conditioner will stop operating.
If your air conditioner displays error codes CH01, CH02, CH06, CH12, CH41, CH42, CH43, CH44, CH45, CH46, CH47, CH48, E1, E2, E3, E7, E8, F2, or F3, it indicates a sensor-related problem.
This may be caused by a faulty temperature or pipe sensor, a loose or disconnected sensor, a main circuit board error, or a temporary electrical issue.
Alternatively, error codes CH21, CH23, CH26, CH29, and E9 indicate a problem with the outdoor unit compressor or its control circuits.
These codes can be triggered by a temporary power issue, a malfunctioning outdoor unit compressor, a compressor drive or protection circuit error, or a faulty electrical component inside the outdoor unit.
If the issue persists after following the steps above, you can get further support through LG Chatbot on our website or by requesting a technician visit.
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This guide was created for all models, so the images or content may be different from your product.
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