Daikin FDMA71AV16, Installation Manual

Page: 54 / 57

53
The above operation is performed not only
at the time of installation, but every time the
p ower circuit breaker is turned off/on.
For comfortable use, do not turn off the
p ower circuit breaker during seasonal use of
the HEATING OPERATION.
• The outdoor unit stops.
This is because the indoor temperature has
reached the set temperature.
The indoor unit is in the FAN 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
air conditioner is in normal condition.
• The remote controller displays “
” ,
This is because the air conditioner
automatically switches to the DEFROST
OPERATION to prevent a decrease in
heating capacity when frost on the outdoor
unit increases.
After maximum 10 minutes, the air
conditioner returns to its original operation.
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
indoor and outdoor units or indoor units and
remote controllers is shut off and stops the
operation due to noise caused by devices
other than the air conditioner.
When the electrical noise decreases, the air
conditioner automatically restarts.
THE FAN SPEED IS DIFFERENT FROM TH E
SETTING
• Pressing the fan speed control butt on
does not change the fan speed.
During the COOLING OPERATION, the low
fan speed or a gentle wind is used to prevent
the discharge of melt water.
During the DEFROST OPERATION
(HEATING OPERATION), the wind from the
air conditioner stops to prevent air discharge
directly toward your body.
After a while, the fan speed can be changed.
(The fan speed cannot be set for the
PROGRAM DRY OPERATION.)
When the room temperature reaches the
set temperature during the HEATING
OPERATION, the outdoor unit stops and the
indoor unit goes into gentle wind.
It takes some time until the fan speed
changes. Raise the set temperature. After a
while, the fan speed changes.
WHITE MIST COMES OUT OF THE AI R
CONDITIONER
• When humidity is high during the COOL-
ING 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 neces-
sary to clean the inside of the indoor unit.
Ask your local dealer for details on cleaning
the indoor unit.
This cleaning requires a qualified service
person.
Check the usage environment.
• When the air conditioner is changed ove r
to the HEATING OPERATION after th e
DEFROST OPERATION and in the DE-
FROST OPERATION.
Moisture generated by defrost becomes
steam and will float around.
When the remote controller display shows
“
”, DEFROST OPERATION is being
used.
NOISE OF AIR CONDITIONERS
•
which is heard when the air conditione r
is in the COOLING or DEFROST OPERA-
TION or a trickling sound which is hear d
when the air conditioner is in the DE-
FROST OPERATION.
This is the sound of refrigerant gas flowing
through both indoor and outdoor units.
• A “Shuh” sound which is heard at th e
start or immediately after the stop o f
operation or which is heard at the star t
or immediately after the stop of the DE-
FROST OPERATION.
This is the noise of refrigerant caused by flow
stop and flow change.
During the HEATING OPERATION, the
air conditioner switches to the DEFROST
OPERATION automatically.
The remote controller shows “
”.
After maximum 10 minutes, the air
conditioner returns to its original operation.
• A “Pishi-pishi” squeaking sound is hear d
when the air conditioner is in operati on
or after the stop of operation.
Expansion and contraction of resin parts
caused by temperature change makes this
noise.
and airflow stops.
A low continuous flow “Shuh” sound
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