Ductless air conditioners error codes

LG CH05 indicates a communication error between the indoor and outdoor units of a covered inverter air conditioner.

LG CH07 indicates conflicting heating and cooling modes across connected 2-in-1 or ceiling-type air-conditioning units.

LG CH10 indicates an issue with the indoor-unit fan.

LG CH34 is a model-dependent overheating-protection display in the same group as CH61.

LG CH38 warns that a covered air conditioner may be low on refrigerant.

LG CH53 indicates a communication error between the indoor and outdoor units of a covered inverter air conditioner.

LG CH54 is a reverse-phase detection display that may follow a power outage or electrical work.

LG CH61 is an overheating-protection display for the outdoor unit in cooling or the indoor unit in heating.

LG CH66 indicates a communication-line or piping-connection issue between indoor and outdoor units.

LG CH67 indicates an issue with the outdoor-unit fan.

LG CH90 is a test-run protection display associated with installation piping checks.

LG CH91 is a test-run protection display associated with installation piping checks.

LG CH93 indicates a communication problem between indoor and outdoor units.

LG SP is a function display showing that Power Cooling is enabled.