LG High-Static Ducted Indoor Unit ARNU363BRA4

Check that all the parts are in place

Inspect the grilles for any damage or obstruction

Inspect the filter for any damage or obstruction

Inspect the fan blade for any damage or obstruction

Dust Buildup – IDU Panels Check

Inspect IDU panels for dust buildup

Clean IDU panels if dust is present

Verify controller functionality

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 grilles for cleanliness and damage

Inspect filters for cleanliness and damage

Inspect fan blades for cleanliness and damage

Check PCB for signs of corrosion

Inspect drain pan after disassembly for cleanliness and damage

Inspect HEX after high pressure cleaning for cleanliness and damage

Check that all the parts are in place

Disassemble and clean the drain pan