APPLIANCE TROUBLESHOOTING
LG Air Conditioner Error Codes
Find plain-language explanations for LGAir Conditioner error codes, common causes, and troubleshooting steps you can try before requesting repair service.
23 error codes currently available
CH04
The air conditioner detected a condensate drainage problem or a full condensate tank.
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CH05
The air conditioner detected a communication problem between the indoor and outdoor units.
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CH07
Connected indoor air-conditioning units are operating in conflicting heating and cooling modes.
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CH10
The air conditioner detected a problem with the indoor unit fan.
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CH34
The air conditioner activated overheating protection.
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CH38
The air conditioner detected a low-refrigerant condition or refrigerant-related protection condition.
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CH53
The air conditioner detected a communication problem between the indoor and outdoor units.
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CH54
The air conditioner detected a reverse-phase or electrical phase condition.
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CH61
The air conditioner activated overheating protection.
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CH66
The air conditioner detected a communication-line or refrigerant-piping connection problem.
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CH67
The air conditioner detected a problem with the outdoor unit fan.
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CH90
The air conditioner detected an installation or piping problem, commonly during a test run.
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CH91
The air conditioner detected an installation or piping problem, commonly during a test run.
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CH93
The air conditioner detected a communication problem between the indoor and outdoor units.
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E0
The air conditioner detected a communication problem between the indoor and outdoor units.
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E6
The air conditioner detected a problem with the indoor unit fan.
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EF
The air conditioner detected a problem with the outdoor unit fan.
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F4
The air conditioner detected a low-refrigerant condition or refrigerant-related protection condition.
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FL
The air conditioner detected a condensate drainage problem or a full condensate tank.
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P4
The air conditioner activated overheating protection.
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P6
The air conditioner activated overheating protection.
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P7
The air conditioner activated overheating protection.
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P8
The air conditioner activated overheating protection.
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Manufacturer information
ApplianceSignal troubleshooting information is based on manufacturer support documentation and rewritten in plain language.