FWD
Ducted fan coil units
4PW17549-1A
Installation and operation manual
4
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)
■ Access the equipment through the inspection panel and remove
the air filter as shown in figure 8 by unscrewing the fixing knobs.
■ Otherwise, if the filter is inside the intake grid, remove the grid
and carry out the operations described below.
(See figure 8)
■ Wash the filter with lukewarm water or, for dry powders, with
compressed air.
■ 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
condensate 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.
DISPOSAL REQUIREMENTS
Dismantling of the unit should be done in accordance with the
relevant local and national regulations.
TROUBLESHOOTING
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
Symptom 2: Poor cooling or heating performance
Symptom 3: The unit leaks
1 Intake module with filter
2 Air filter, secured to the intake module by means of screws, it
is pulled out like a drawer.
NOTE
Adequate and regular maintenance and cleaning
means energy conservation and cost saving.
POSSIBLE CAUSES CORRECTIVE 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"
POSSIBLE CAUSES CORRECTIVE 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
POSSIBLE CAUSES CORRECTIVE ACTION
The unit is not installed with the
correct inclination
Contact the installer
The condensate discharge is
clogged
Contact the installer
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