LG

Room temperature sensor malfunction. Check sensor wiring and replace if faulty.

Evaporator coil temperature sensor fault. Professional sensor replacement required.

Condenser coil temperature sensor malfunction. Replace outdoor coil sensor.

Outdoor ambient temperature sensor fault. Check outdoor sensor connections.

Indoor/outdoor communication failure. Check control cable and connections.

Indoor blower motor malfunction. Check motor operation and electrical supply.

Outdoor fan motor fault. Inspect outdoor fan and motor connections.

Compressor malfunction or protection activated. Professional compressor diagnosis required.

High refrigerant pressure detected. Check system for blockages or overcharge.

Low refrigerant pressure detected. Check for refrigerant leaks and recharge system.

Compressor discharge temperature sensor fault. Professional replacement required.

Compressor suction temperature sensor malfunction. Check sensor and connections.

Liquid line temperature sensor fault. Professional sensor replacement needed.

Gas line temperature sensor malfunction. Check sensor and connections.

Heat exchanger temperature sensor fault. Professional sensor replacement required.

Compressor oil temperature sensor malfunction. Professional diagnosis required.

Current sensor fault. Professional sensor replacement needed.

Voltage sensor malfunction. Check electrical connections and sensor.

Motor position sensor fault. Professional sensor replacement required.

Motor speed sensor malfunction. Check sensor and motor connections.

System high pressure alarm activated. Check refrigerant charge and condenser.

High temperature protection activated. Check system operation and ventilation.

Compressor overload protection triggered. Professional compressor inspection required.

Motor overload protection activated. Check motor condition and electrical supply.

Inverter overload protection triggered. Professional inverter diagnosis required.

Supply voltage too high. Check electrical supply and voltage regulation.

Electrical current too high. Check wiring and electrical connections.

Operating frequency too high. Check system settings and operation.

Superheat too high. Check expansion valve and refrigerant charge.

Subcooling too high. Check refrigerant overcharge and condenser operation.

System low pressure alarm activated. Check for refrigerant leaks.

Low temperature protection activated. Check system operation and settings.

Supply voltage too low. Check electrical connections and utility supply.

Electrical current too low. Check motor and electrical connections.

Operating frequency too low. Check system settings and operation.

Superheat too low. Check expansion valve and refrigerant flow.

Subcooling too low. Check refrigerant charge and condenser performance.

Compressor oil level low. Professional oil level check and refill needed.

Oil pressure too low. Professional oil system diagnosis required.

Insufficient airflow detected. Check filters and ductwork.

Defrost sensor malfunction. Check sensor and defrost operation.

Defrost cycle malfunction. Professional defrost system diagnosis required.

Air filter requires cleaning or replacement. Clean or replace filters.

Condensate drain system fault. Check drain pan and drainage.

Excessive frost accumulation. Check airflow and defrost operation.