Daikin FTKS50BVMB, Service Manual

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Ceiling Mounted Cassette Type SiEN18-622
298 System Configuration
II. When
“ ”
(under centralized control) is
displayed and operation is different from the
remote control display.
This is because operating mode is controlled by a
micro computer, as shown below, depending on the
operating moder of other connected indoor units when
using in a multi system.
• If the operating mode does not match that of the other
indoor units which are already running, the indoor unit
goes into standby mode (the fan stops and the air flow
flaps becom horizontal).
• The unit will go into the above mode if either cooling, dry or
fan operation moder are set together with heating mode.
NOTE
Normally, the operation mode in the room where the unit is
first run is given priority, but the following situations are
exceptions, so please keep this in mind.
a. If the operation mode of the first room is FAN Mode, then
using Heating Mode in any room after this will give priority
to heating. In this situation, the air conditioner running in
FAN Mode will go on standby.
b. With the Priority Room Setting active
Contact your Daikin dealer for the operation that
corresponds to your system.
• If the total capacity of all the indoor units running
exceeds the limit, the indoor unit will go into standby
mode (fan and air flow direction remain as set). (Only
for cooling-only type.)
• If another indoor unit goes into heating mode after
cooling, the unit may go into dry mode (fan operates
whisper and the air flow flaps become horizontal).
III. The fan speed is different from the setting.
• Pressing the fan speed control button does not
change the fan speed.
When the room temperature reaches the set temperature
in heating mode, the power supply from the outdoor unit
stops and the indoor unit goes into whisper mode (in a
multi system, the fan goes back and forth between stop
and whisper). This is to prevent the cool air from being
blown directly onto anyone in the room.
IV. Air blow direction is not as specified.
• Actual air blow direction is not as shown on the
remote control.
• Automatic swing setting does not work.
Refer to “Air flow direction adjust”.
V. 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
exists.
VI. 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
system is in COOLING or DEFROST 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.
• A continuous flow “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.
VII. 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.
VIII. The units give off odors
The unit absorbs the smell of rooms, furniture, cigarettes,
etc., and then emits them.
IX. The liquid crystal of the remote control show
“88”
• It happens immediately after the main power supply
switch is turned on.
This shows that the remote control is in normal condition.
This is continues temporary.