Installation and operation manual
7
FDYMP71~125L7V1
Split System air conditioners
4PW14036-1B
N
OT
A
MALFUNCTION
OF
THE
AIR
CONDITIONER
The following symptoms do not indicate air conditioner malfunction.
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 its 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 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 "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 odours
■
The unit absorbs the smell of rooms, furniture, cigarettes, etc.,
and then emits them.
The liquid crystal display 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 temporarily.
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 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 operate properly, 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 tripped.
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 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.
