Concealed Duct High Static Pressure
Maintenance List
Part
Indoor/outdoor
Heat exchanger
Indoor/outdoor
Fan motor
Filter
Fan
Indoor/outdoor
Air inlet/outlet grilles
Drain pan
Ornamental panel,
louvers
Exterior
Unit
Check (visual/auditory)
• Dust/dirt clogging, scratches
• Sound
• Dust/dirt, breakage
Indoor
• Vibration, balance
Indoor
• Dust/dirt, appearance
• Dust/dirt, scratches
• Dust/dirt clogging, drain
Indoor
contamination
• Dust/dirt, scratches
Indoor
• Rust, peeling of insulator
Outdoor
• Peeling/lift of coat
• Wash the heat exchanger when it is clogged.
• Take appropriate measures when abnormal
sound is generated.
• Wash the filter with water when it is contaminated.
• Replace it when it is damaged.
• Replace the fan when vibration or balance is
terrible.
• Brush or wash the fan when it is contaminated.
• Fix or replace them when they are deformed or
damaged.
• Clean the drain pan and check the downward
slope for smooth drainage.
• Wash them when they are contaminated or apply
repair coating.
• Apply repair coating.
– 18 –
Owner's Manual
Maintenance
EN
18-EN