7.2 Routine Maintenance
Only a qualified service person is allowed to perform maintenance.
Disconnect the power supply before cleaning and maintenance.
Do not use water or air of 50°C or higher for cleaning air filters and outside panels.
Notes:
①. Do not operate the air conditioner with the filter uninstalled, otherwise dust would
come into the unit.
②. Do not remove the air filter except for cleaning. Unnecessary handling may
damage the filter.
③. Do not clean the unit with gasolene, benzene, thinner, polishing powder or liquid
insecticide, otherwise it would cause discoloration and deformation of the unit.
④. Do not wet the indoor unit in case of electric shock or fire hazard.Increase the
frequency of cleaning if the unit is installed in a room where the air is extremely
contaminated.(As a yardstick for yourself, consider cleaning the filter once a half
year.)
If dirt becomes impossible to clean, change the air filter.
1. Open the air inlet grille
(1) How to open the panel grille of the 24-42k
cassette type unit
①. Push the buckle as shown in the Figure.
②. Release the screws under buckles by a
screwdriver. Push the fastener and open
the panel grille.
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