Si18-525B
Instruction
Operation Manual
309
• 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 con-
trol. 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 one minute until the micro computer is pre-
pared for operation.
• The outdoor unit is stopped
This is because the room temperature has
reached the set temperature. The indoor unit
switches to fan operation.
II. WHEN “
” (UNDER CENTRALIZED CON-
TROL) IS DISPLAYED AND OPERATION IS DIFFER-
ENT FROM THE REMOTE CONTROL DISPLAY.
This is because operating mode is controlled by a
micro computer, as shown below, depending on
the operating mode of the 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 become horizontal).
The unit will go into the above mode if either cool-
ing, dry, or fan operation mode 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 follow-
ing 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 sit-
uation, 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 run-
ning 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 tem-
perature 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 controller.
• 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 opera-
tion (In oily or dusty places)
If the inside of an indoor unit is extremely contam-
inated, 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 systems 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.
Summary of Contents for D-Series
Page 1: ...Si18 525B Applied Models Super Multi Plus Cooling only Super Multi Plus Heat Pump D Series ...
Page 33: ...List of Functions Si18 525B 20 List of Functions ...
Page 71: ...Specifications Si18 525B 58 Specifications ...
Page 117: ...Refrigerant Flow for Each Operation Mode Si18 525B 104 Refrigerant Circuit ...
Page 171: ...Indoor Unit SkyAir Models Si18 525B 158 Function ...
Page 207: ...Test Operation and Field Setting for RA Indoor Unit Si18 525B 194 Test Operation ...
Page 336: ...Si18 525B Service Check Function Troubleshooting 323 ...
Page 469: ...Wiring Diagrams Si18 525B 456 Appendix ...
Page 475: ...Si18 525B vi Index ...
