FDBQ25B7V1
Split series room air conditioners
Multi system room air conditioners
4PW15396-1B
Operation manual
3
T
ROUBLESHOOTING
If one of the following malfunctions occurs, take the measures shown
below and contact your Daikin dealer.
The system must be repaired by a qualified service person.
■
If a safety device such as a fuse, a breaker or an earth leakage
breaker frequently actuates, or the ON/OFF switch does not
properly work;
Measure: Turn off the main power switch
■
If water leaks from unit;
Measure: Stop the operation.
■
If the display "
" (INSPECTION), "UNIT No.", and the
OPERATION lamp flashes and the "MALFUNCTION CODE"
appears.
Measure: Notify your Daikin dealer and inform him/her of the
display.
If the system does not properly operate except for the above
mentioned case, and none of the above mentioned malfunctions is
evident, investigate the system according to the following
procedures.
■
If the system does not operate at all.
-
Check if there is a power failure.
Wait until power is restored. If power failure occurs during
operation, the system automatically restarts immediately
after the power supply recovers.
-
Check if the fuse has blown or breaker has been stripped.
Change the fuse or set the breaker.
■
If the system stops operating after operation is complete.
-
Check if the air inlet or outlet of outdoor or indoor unit is
blocked by obstacles.
Remove the obstacle and make it well-ventilated.
-
Check if the air filter is clogged.
Ask a qualified service person to clean the air filter.
■
The system operates but it does not sufficiently cool or heat.
-
If the air inlet or outlet of the indoor or the outdoor unit is
blocked with obstacles.
Remove the obstacle and make it well-ventilated.
-
If the air filter is clogged.
Ask a qualified service person to clean the air filter.
-
If the set temperature is not proper. (Refer to the manual of
the remote controller)
-
If the FAN SPEED CONTROL button is set to LOW SPEED.
(Refer to the manual of the remote controller)
-
If the air flow angle is not proper. (Refer to the manual of the
remote controller)
-
If the doors or the windows are open. Shut doors or windows
to prevent wind from coming in.
-
If direct sunlight enters the room (when cooling).
Use curtains or blinds.
-
When there are too many inhabitants in the room. Cooling
effect decreases if heat gain of the room is too large.
-
If the heat source of the room is excessive (when cooling).
Cooling effect decreases if heat gain of the room is too large.
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.
(As a yardstick for yourself, consider cleaning the filter once a half
year.)
If the dirt becomes impossible to clean, change the air filter. (Air filter
for exchange is optional.)
1
Removing the air filter
■
Rear suction
(See figure 2a)
:
Pull the bottom side of the air filter backwards, over the 2
bends.
■
Bottom suction
(See figure 3a)
:
Pull the filter over the two bends situated at the backside of
the unit.
2
Cleaning the air filter
Remove dust from the air filter using a vacuum cleaner and
gently rinse them in cool water. Do not use detergent or hot
water to avoid filter shrinking or deformation. After cleaning dry
them in the shade.
3
Replacing the air filter
■
Rear suction
(See figure 2b)
:
Hook the filter behind the flap situated at the top of the unit
and push the other side gently over the 2 bends.
■
Bottom suction
(See figure 3b)
:
Hook the filter behind the flap situated at the middle of the
unit and push the other side gently over the 2 bends.
Before a long stop period
■
Operate the fan only for several hours to dry the inside of the
indoor unit.
Set the remote controller in fan only operation mode.
Set the remote controller in cool operation mode and the
temperature setting at 31°C.
■
Disconnect the power supply by turning off the safety breaker
(fuse or earth leak detector).
■
Clean the air filters and set them back in place.
■
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 and drain pump. Water or
detergent may deteriorate the insulation of electronic
components and result in burn-out of these
components.
NOTE
Do not operate the air conditioner without filters, this to
avoid dust accummulation inside the unit.
