Maintenance; Cleaning The Air Filter; Cleaning The Heat Exchanger; Troubleshooting - Daikin FWB-C 04 Instruction, Use And Maintenance Manual

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MAINTENANCE

For safety reasons, before carrying out any maintenance or
cleaning jobs, turn off the unit by moving the fan speed se-
lector to "Off" and putting off the main switch (0 position).
DANGER!
Due caution must be taken while carrying out
maintenance: some metal parts may cause injuries; wear
protective gloves.
The maintenance requirements of FWB-C ducted units are lim-
ited to periodic cleaning of the air filter and heat exchanger and

CLEANING THE AIR FILTER

Disconnect the unit from the power supply by setting the main
switch on 0 (OFF).
To clean the air filter proceed as follows:
1. Access the unit via the inspection panel and take out the air
filter as shown in figure ( p. 141).
2. If the filter is on the inside of the intake grille, remove the

CLEANING THE HEAT EXCHANGER

It It is advisable to check the condition of the exchanger before
the start of every summer season to make sure that the fins are
not obstructed by dirt.
To access the heat exchanger, remove the outlet panel (whether
of the type with collars or a rectangular flange) and the drip tray.
On reaching the exchanger, clean it with compressed air or
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TROUBLESHOOTING

If the unit is not working properly, before calling a service engi-
neer carry out the checks indicated in the table below.
PROBLEM
No power supply
The unit fails to work The automatic safety cutout has tripped
The on/off switch is on
The air filter is dirty or clogged
An obstacle is obstructing the air intake or outlet
The unit provides insufficient cooling
Air is trapped inside the heat exchanger
or heating
There are open windows and/or doors
The minimum speed has been selected
The unit has not been installed with the correct inclination
The unit "leaks" water
The drainage outlet is clogged
checks on the efficiency of condensate drainage.
Maintenance may be performed only by specialised
personnel.
Whenever starting up the unit after it has not been used for a
long time, check that there is no air in the heat exchanger.
The motor requires no maintenance since it has self-lubricating
bearings.
latter and then proceed to carry out the steps described
below.
3. Clean the filter with warm water or, in the event of dry dust
build-up, using compressed air.
4. Allow the filter to dry and then fit it back in place.
Air filter dimensions, see figure: p. 88.
low-pressure steam taking care not to damage the fins.
Before the start of every summer season, check the efficiency of
condensate drainage.
Adequate periodic maintenance will ensure save both ener-
gy and cost savings.
If the problem cannot be solved, contact your dealer or the near-
est service centre.
CAUSE
Restore the power supply
Call a service centre for assistance
Start the unit by moving the switch to ON
Clean the air filter
Remove the obstacle
Call the installer for assistance
Close windows and/or doors
Select medium or maximum speed
Call the installer for assistance
Call the installer for assistance
SOLUTION
UT66002764-07
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