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Fujitsu Inverter Halcyon 9374379392-04 Operating Manual page 13

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Cleaning the Air Filter
1. Push the intake grille's hooks inward towards the
center of the unit to open the intake grille.
Grille Hook
2. Pull out the fi lter from the intake grille.
3. Clean the air fi lter.
Remove the dust from the air filters by vacuuming or
washing them. After washing, allow the air fi lters to dry
thoroughly in an area protected from sunlight.
Filter Indicator Reset (A special setting)
● Can be used if set correctly during installation.
Please consult authorized serviceman when using this function.
It lights on when it is time to clean the air
fi lters.
After turning the power on,
press the MAINTENANCE button for
2 seconds or more on the remote control, or
press the MANUAL AUTO button
for 2 seconds or less on the indoor unit.
4. Re-attach the air fi lters to the intake grille.
1 Replace the air fi lter into its holder.
2 Make sure that the air fi lter makes contact with the fi lter
stopper when it is replaced into its holder.
5. Close the intake grille and push the intake grille's
hooks outward.
● Dust can be cleaned from the air fi lter either with a vac-
uum cleaner, or by washing the fi lter in a solution of mild
detergent and warm water. If you wash the fi lter, be sure
Air Filter
to allow it to dry thoroughly in a shady place before rein-
● If dirt is allowed to accumulate on the air fi lter, airfl ow will
be reduced, lowering operating effi ciency and increasing
Air Filter
Intake Grille
Grille Hook
Filter Hook


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