User Guide

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2. To know the position of indoor unit body by address
• To confirm the unit No. in the group control
(Follow to the procedure during operation) (in this procedure, the indoor units in group control stop.)
<Procedure>
The indoor unit numbers in the group control are
successively displayed, and fan, louver, and drain pump
of the corresponding indoor unit are turned on.
(Follow to the procedure during operation)
1 Push
VENT
and
TES
T
buttons simultaneously for
4 seconds or more.
• Unit No. is displayed.
• Fans and louvers of all the indoor units in the
group control operate.
2 Every pushing
U
NIT L
OU
VE
R
button, the unit numbers
in the group control are successively displayed.
• The unit No. displayed at the first time indicates
the master unit address.
• Fan and louver of the selected indoor unit only
operate.
3 Push
TES
T
button to finish the procedure.
All the indoor units in the group control stop.
<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