Operation manual
2
FDBQ25B7V1
Split series room air conditioners
Multi system room air conditioners
4PW15396-1B
O
PERATION
PROCEDURE
Explanation of heating operation
Master-slave unit system (mode batting)
■
System operation mode cool or heat is determined by the mode
the master unit is in. When the master unit is in cool mode,
respectively heat mode, the system can only operate in cooling,
respectively heating, regardless of the thermostat setting.
■
When the master unit is OFF, the system mode is determined by
the unit which is switched on first.
O
PTIMUM
OPERATION
Observe the following precautions to ensure the system operates
properly.
■
Adjust the air outlet properly and avoid direct air flow to room
inhabitants.
■
Adjust the room temperature properly for a comfortable
environment. Avoid excessive heating or cooling.
■
Prevent direct sunlight from entering a room during cooling
operation by using curtains or blinds.
■
Keep doors and windows closed. If the doors and windows
remain open, air will flow out of your room causing a decrease in
the cooling or heating effect.
■
Never place objects near the air inlet or the air outlet of the unit.
It may cause deterioration in the effect or stop in the operation.
■
Turn off the main power supply switch to the unit when the unit is
not used for longer periods of time. If the switch is on, it uses
electricity. Before restarting the unit, turn on the main power
supply switch 6 hours before operation for smooth running.
(Refer to
"Maintenance" on page 3
)
■
When the display shows "
" (time to clean the air filter), ask
a qualified service person to clean the filters. (Refer to
"Maintenance" on page 3
)
F
OLLOWING
SYMPTOMS
ARE
NOT
AIR
CONDITIONER
TROUBLES
The system does not operate
■
The system does not restart immediately after the ON/OFF
button is pressed.
If the OPERATION lamp lights, the system is in its normal
operating condition.
It does not restart immediately because one of its safety devices
actuates to prevent the system from being overloaded.
The system will turn on again automatically after three minutes.
■
The system does not restart immediately when the
TEMPERATURE SETTING button is returned to the former
position after pushing.
It does not restart immediately because one of its safety devices
actuates to prevent the system from being overloaded.
The system will turn on again automatically after three minutes.
■
The system does not start when the display shows "
"
(EXTERNAL CONTROL ICON) and it flashes for a few seconds
after pressing an operation button.
This is because the system is controlled or disabled by another
controller with a higher priority.
When the display flashes, it indicates that the system cannot be
controlled by this indoor unit.
■
The system does not start when the display shows "
".
This indicates that the change-over of the installation is under
centralized control asigned to another unit or to an optional cool/
heat selector connected to the outdoor unit (= master remote
controller).
The indoor unit has to be restarted with the controller.
■
The system does not start immediately after the power supply is
turned on.
Wait one minute until the micro computer is prepared for
operation.
White mist comes out of a unit
■
When humidity is high during cooling operation (in oily or dusty
places)
If the inside of an indoor unit is extremely contaminated, the
temperature distribution inside a room becomes uneven. It is
necessary to clean the inside of the indoor unit. Ask your Daikin
dealer for details on cleaning the unit. This operation requires a
qualified service person.
■
When the system is changed over to HEATING OPERATION
after DEFROST OPERATION.
Moisture generated by DEFROST becomes steam and exits.
Noise of air conditioners
■
A continuous low "hissing" sound is heard when the system is in
COOLING or DEFROST OPERATION.
This is the sound of refrigerant gas flowing through both indoor
and outdoor units.
■
A "hissing" sound which is heard at the start or immediately after
the stop of operation or which is heard at the start or
immediately after the stop of DEFROST OPERATION.
This is the noise of refrigerant caused by flow stop and flow
change.
■
A continuous low "swishing" sound is heard when the system is
in COOLING OPERATION or at a stop.
The noise is heard when the drain pump is in operation.
■
A "squeaking" sound is heard when the system is in operation or
after the stop of operation.
Expansion and contraction of plastic parts caused by
temperature change makes this noise.
Dust from the units
■
Dust may blow out from the unit after starting operation from
long resting time.
Dust absorbed by the unit blows out.
The units give off odors
■
The unit absorbs the smell of rooms, furniture, cigarettes, etc.,
and then emits them.
The liquid crystal of the remote controller shows "
"
■
Happens immediately after the main power supply switch is
turned on.
Shows that the remote controller is in normal condition.
Continues temporary.
■
If a function that is not available is selected, the
message NOT AVAILABLE will appear.
■
To protect the unit, turn on the main power switch 6
hours before operation.
■
If the main power supply is turned off during
operation, operation will restart automatically after the
power turns back on again.
NOTE
The master-slave setting is decided upon and set
during installation.
