FWD
Ducted fan units
4PW17549-3
Installation and operation manual
Cleaning the air filter
Cut voltage to the unit by turning the line switch to OFF.
For cleaning the air filter proceed as follows (see figure 6)
n
Access the equipment through the inspection panel and remove
the air filter as shown in figure 8 by unscrewing the fixing knobs.
n
Otherwise, if the filter is inside the intake grid, remove the grid and
carry out the operations described below.
(See figure 8)
1
Intake module with filter
2
Air filter, secured to the intake module by means of screws, it
is pulled out like a drawer.
n
Wash the filter with lukewarm water or, for dry powders, with com
-
pressed air.
n
Reassemble the filter after having it dried up.
Cleaning the heat exchanger
It is advisable to check the condition of the heat exchanger before the
start of the summer season. Also check if the fins are not clogged by
impurities.
To access the heat exchanger, remove the delivery panel and the con-
densate tank. Upon having accessed the heat exchanger, clean with
compressed air or low pressure steam, without damaging the fins of
the heat exchanger.
Before operating it in the summer, check the condensate discharges
regularly.
NOTE
Adequate and regular maintenance and cleaning
means energy conservation and cost saving.
d
isposal
reqUirements
Dismantling of the unit should be done in accordance with the relevant
local and national regulations.
t
roUBleshooting
If the unit does not work properly first check the points reported in the
table below before requesting service.
If the problem cannot be solved contact your dealer or service centre.
Symptom 1: The unit does not run at all
P
ossible
causes
c
orrective
action
Power failure
Restore power
The automatic circuit breaker tripped
Contact service centre
The switch is on STOP (“0”) position
Turn ON the unit, select “I”
Symptom 2: Poor cooling or heating performance
P
ossible
causes
c
orrective
action
Dirty or clogged air filter
Clean the air filter
Obstacle near the air inlet or outlet
Remove the obstacle
Air inside the heat exchanger
Contact the installer
Doors and windows are open
Close doors and windows
The unit is running at low speed
Select medium or high fan speed
Symptom 3: The unit leaks
P
ossible
causes
c
orrective
action
The unit is not installed with the
correct inclination
Contact the installer
The condensate discharge is
clogged
Contact the installer
Units are marked with the following symbol:
This means that electrical and electronic products may not be mixed with
unsorted household waste. Do NOT try to dismantle the system yourself: the
dismantling of the system, treatment of the refrigerant, of oil and of other parts
must be done by an authorized installer and must comply with applicable
legislation. Units must be treated at a specialized treatment facility for reuse,
recycling and recovery. By ensuring this product is disposed of correctly, you will
help to prevent potential negative consequences for the environment and human
health. For more information, contact your installer or local authority.
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