5 Maintenance and service
Operation manual
5
FDXM25~60F3V1B
Split system air conditioners
4P456959-1 – 2017.03
CAUTION
Do not touch the heat exchanger fins. These fins are sharp
and could result in cutting injuries.
NOTICE
When cleaning the heat exchanger, make sure to remove
the switch box and fan motor. Water or detergent might
deteriorate the insulation of electronic components and
result in burnout of these components.
WARNING
Be carefull with ladders when working in high places.
5.2
To clean the drain pan
Clean the drain pan so that it does NOT become clogged and dusty.
5.3
Cleaning the air filter, suction
grille, air outlet and outside panels
5.3.1
To clean the air outlet and outside panels
WARNING
Do NOT let the indoor unit get wet.
Possible
consequence:
Electric shock or fire.
NOTICE
▪ Do NOT use gasoline, benzene, thinner polishing
powder or liquid insecticide.
Possible consequence:
Discoloration and deformation.
▪ Do NOT use water or air of 50°C or higher.
Possible
consequence:
Discoloration and deformation.
▪ Do NOT scrub firmly when washing the blade with
water.
Possible consequence:
The surface sealing
peels off.
Clean with a soft cloth. If it is difficult to remove stains, use water or
neutral detergent.
5.3.2
To clean the air filter
When to clean the air filter
:
▪ Rule of thumb: Clean every 6 months. If the air in the room is
extremely contaminated, increase the cleaning frequency.
▪ Depending on the settings, the user interface can display the
TIME TO CLEAN AIR FILTER
notification. Clean the air filter
when the notification is displayed.
▪ If the dirt becomes impossible to clean, change the air filter
(= optional equipment).
How to clean the air filter
:
1
Remove the air filter.
Push the hooks and pull the filter as
shown in illustration below. (2 hooks for 25 and 35 type or 3
hooks for 50 and 60 type)
rear suction
bottom suction
2
1
2
1
2
Clean the air filter
. Use a vacuum cleaner or wash with water.
If the air filter is very dirty, use a soft brush and neutral
detergent.
3
Dry the air filter in the shadow.
4
Reattach the air filter.
Hook the filter behind the flap and
attach the filter to the main unit while pushing down on the
hooks.
rear suction
bottom suction
2
1
2
1
5
Turn ON the power.
6
Press the
FILTER SIGN RESET
button.
Result:
The
TIME TO CLEAN AIR FILTER
notification disappears
from the user interface.
5.4
Maintenance before a long stop
period
E.g., at the end of the season.
▪ Let the indoor units run in fan only operation for about half a day in
order to dry the interior of the units.
▪ Turn off the power. The user interface display disappears. When
the main power is turned on, the air conditioner will use some
power, even if it is not operating.
▪ Clean air filters and casings of indoor units. Contact your installer
or maintenance person to clean air filters and casings of the
indoor unit. Maintenance tips and procedures for cleaning are
provided in the installation/operation manuals of dedicated indoor
units. Make sure to install cleaned air filters back in the same
position.
▪ Remove the batteries from the user interface.
5.5
Maintenance after a long stop
period
E.g., at the beginning of the season.
▪ Check and remove everything that might be blocking inlet and
outlet vents of indoor units and outdoor units.
▪ Check if the earth is connected properly.
▪ Check if there is somewhere a broken wire. Contact your dealer in
case of problems.
▪ Clean air filters and casings of indoor units. Contact your installer
or maintenance person to clean air filters and casings of the
indoor unit. Maintenance tips and procedures for cleaning are
provided in the installation/operation manuals of dedicated indoor
units. Make sure to install cleaned air filters back in the same
position.
