LG · Air Conditioning
This indicates that either the low or high-pressure switch has been activated, meaning the system pressure is outside of its normal operating range. This could be due to refrigerant issues or airflow problems.
Click steps to track your progress.
Turn off the unit and check for any obstructions blocking airflow to the indoor and outdoor units.
Ensure the system has been recently serviced and the refrigerant levels are correct.
Reset the unit by turning off the power for 1 minute.
Consult a technician if the fault code reappears, as it may indicate a refrigerant or pressure regulation problem.