Service Manual

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<Maintenance/Check list>
Aiming in environmental preservation, it is strictly recommended to clean and maintain the indoor/outdoor units
of the operating air conditioning system regularly to secure effective operation of the air conditioner.
It is also recommended to maintain the units once a year regularly when operating the air conditioner for a long time.
Check periodically signs of rust or scratches, etc. on coating of the outdoor units.
Repair the defective position or apply the rust resisting paint if necessary.
If an indoor unit operates for approx. 8 hours or more per day, usually it is necessary to clean the indoor/outdoor
units once three months at least.
These cleaning and maintenance should be carried out by a qualified dealer.
Although the customer has to pay the charge for the maintenance, the life of the unit can be prolonged.
Failure to clean the indoor/outdoor units regularly will cause shortage of capacity, freezing, water leakage or
trouble on the compressor.
Part name
Heat exchanger
Fan motor
Filter
Fan
Suction/
Discharge grille
Drain pan
Face panel, Louver
External appearance
Object
Indoor Outdoor
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Contents of check
• Blocking with dust, damage check
• Audibility for sound
• Visual check for dirt and breakage
• Visual check for swing and balance
• Check adhesion of dust and external
appearance.
• Visual check for dirt and scratch
• Check blocking by dust and dirt of drain
water.
• Check dirt and scratch.
• Check rust and pealing of insulator
• Check pealing and floating of coating film
Contents of maintenance
• Clean it when blocking is found.
• When abnormal sound is heard
• Clean with water if dirty
• Replace if any breakage
• Replace fan when swinging or
balance is remarkably poor.
• If a large dust adheres, clean it with
brush or water.
• Repair or replace it if deformation or
damage is found.
• Clean drain pan, Inclination check
• Cleaning/Coating with repair painting
• Coating with repair painting