LG High-Static Ducted Indoor Unit ARNU123BGA4

Enter the refrigerant pressure (LGMV)

Is the refrigerant pressure within the normal range?

Measure the compressor noise level (dB)

Describe the quality of the compressor noise

Measure the IPM fan noise level (dB)

Measure the condenser fan noise level (dB)

Record any unusual fan noise observations

Dust Buildup – IDU Panels Check

Inspect IDU panels for dust buildup

Clean IDU panels if dust is present

Ensure controller is functioning properly

Check that all the parts are in place

Inspect grilles for cleanliness and damage

Inspect fan blade for damage or debris

Disassemble and inspect the drain pan for blockages or damage

Enter the refrigerant pressure (LGMV)

Is the refrigerant pressure within the normal range?

Measure the compressor noise level

Describe the quality of the compressor noise

Is the condenser fan noise within acceptable limits?

Check that all components are in place and clean

Inspect fan blades for any damage or debris

Check PCB for any signs of corrosion

Disassemble and clean the drain pan thoroughly

Perform high pressure cleaning of the HEX

Inspect plasma filters if present