Daikin FBQ20DAVMK Operation Manual page 12

01_EN_3PN07753-14T.fm Page 10 Thursday, January 13, 2011 3:54 PM
• The system does not restart immediately
when TEMPERATURE SETTING button is
returned to the former position after pushing
the button.
It does not restart immediately because a safety
device operates to prevent overload of the system.
If the OPERATION lamp lights, the system is in
normal condition. After 3 minutes, the system will
turn on again automatically.
• The system does not start when the display
shows " " (UNDER CENTRALIZED
CONTROL) and it flashes for few seconds
after pressing an operation button.
This is because the system is under centralized
control. Flashes on the display indicates that the
system cannot be controlled by the remote
controller.
• The system does not start immediately after
the power supply is turned on.
Wait 6 hours until the micro computer is prepared
for operation.
• The outdoor unit stops.
The room temperature has reached the preset
temperature. The indoor unit is in ventilation operation.
Cooling operation (automatic cooling operation):
Lower the set temperature.
Heating operation (automatic heating operation):
Raise the set temperature.
The operation starts after a while when the
system is in normal condition.
• The remote controller displays "
air discharge stops.
This is because the system automatically
switches to DEFROST operation to prevent a
decrease in heating capacity when frost on the
outdoor unit increases.
After 6 to 8 minutes (maximum 10 minutes), the
system returns to its original operation.
II. THE OPERATION SOMETIMES STOPS.
• The remote controller displays "U4" and "U5",
and the operation stops. However, it will
restart in a few minutes.
This is because communication between the units
is shut off and stopped due to noise caused by
devices other than the air conditioner.
When the electrical noise decreases, the system
automatically restarts.
III.THE FAN SPEED IS DIFFERENT FROM THE
SETTING.
• Pressing the fan speed control button does
not change the fan speed.
<When cooling operation>
During defrost operation, low airflow rate is used
to prevent the discharge of melt water.
After a while, the airflow rate can be changed.
<When heating operation>
10
When the room temperature reaches the set
temperature
from the outdoor unit stops and the indoor unit
goes into whisper mode.
It takes some time until the airflow rate changes.
Raise the set temperature.
After a while, the airflow rate changes.
IV.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.
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 exists.
When the remote controller display shows
" ", defrosting operation is being used.
V. NOISE OF AIR CONDITIONERS
• A ringing sound after the unit is started.
This sound is generated by the temperature
regulator working.
It will quiet down after about a minute.
• A continuous flow "Shuh" sound is heard
when the systems is in COOLING or DEFROST
", and
OPERATION.
This is the sound of refrigerant gas flowing
through both indoor and outdoor units.
• A "Shuh" 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.
During heating operation, the system switches to
DEFROST operation automatically. The remote
controller shows "
After 6 to 8 minutes (maximum 10 minutes), the
system returns to its original operation.
• A continuous low "Shah" 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 "Pishi-pishi" 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.
in h eating mode, the power supply
Ask your Daikin
".
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