FXSQ20~125M8V3B
VRV System air conditioners
4PW25083-1C
Installation and operation manual
8
T
EST
OPERATION
Refer to the installation manual of the outdoor unit.
The operation lamp of the remote controller will flash when an error
occurs. Check the error code on the liquid crystal display to identify
the trouble. An explanation of error codes and the corresponding
trouble is provided on the "Caution for servicing" sticker on the indoor
units switch box.
PRECAUTIONS
In case something is wrong with the unit and it does not operate,
refer to the malfunction diagnosis label attached to the unit.
M
AINTENANCE
How to clean the air filter
Clean the air filter when the display shows "
" (TIME TO CLEAN
AIR FILTER).
Increase the frequency of cleaning if the unit is installed in a room
where the air is extremely contaminated.
If the dirt becomes impossible to clean, change the air filter. (Air filter
for exchange is optional.)
1
Open the suction grille. (Only for bottom suction.)
Slide both knobs simultaneously as shown and then pull them
downward.
If chains are present, unhook the chains.
2
Remove the air filters.
Remove the air filters by pulling their cloth upward (rear suction)
or backward (bottom suction).
3
Clean the air filter.
Use vacuum cleaner (A) or wash the air filter with water (B).
When the air filter is very dirty, use soft brush and neutral
detergent.
Remove water and dry in the shade.
1
Drain pumping device (built-in) drain water is removed from the
room during cooling.
2
Air filter (inside suction grill)
3
Air outlet
4
Decoration panel (optional), this is where the room air is drawn
in.
5
Remote controller
Caution
■
Only a qualified service person is allowed to perform
maintenance.
■
Before obtaining access to terminal devices, all power
supply circuits must be interrupted.
■
Do not use water or air of 50°C or higher for cleaning
air filters and outside panels.
■
When cleaning the heat exchanger, be sure to remove
the switchbox, fan motor, auxiliary electric heater and
drain pump. Water or detergent may deteriorate the
insulation of electronic components and result in
burn-out of these components.
■
If the main power supply is turned off during
operation, operation will restart automatically after the
power turns back on again.
1
2
3
5
4
(A) Using a vacuum cleaner
(B) Washing with water
rear suction
bottom suction
