Daitsu ASD 9UI-DB User manual

Service Manual
Models: ASD 9UI-DB
ASD 12UI-DB
ASD 18UI-DB
ASD 21UI-DB

Technical Information
Service Manual
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Model '6.,'% '6.,'%
3URGXFW&RGH
Power
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Rated Voltage V~ 220-240 220-240
5DWHG)UHTXHQF\ Hz 50 50
3KDVHV 1 1
3RZHU6XSSO\0RGH 2XWGRRU 2XWGRRU
Cooling Capacity W 2500 3200
Heating Capacity W 2800 3400
&RROLQJ3RZHU,QSXW W 781 997
+HDWLQJ3RZHU,QSXW W 777 941
&RROLQJ3RZHU&XUUHQW A 3.99 4.5
+HDWLQJ3RZHU&XUUHQW A 3.74 4.4
5DWHG,QSXW W 1500 1500
5DWHG&XUUHQW A 6.9 7.2
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EER W/W 3.20 3.21
COP W/W 3.60 3.61
SEER W/W 6.1 6.1
+63) W/W / /
Application Area m212-18 16-24
Indoor Unit
Model of Indoor Unit '6.,'% '6.,'%
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Pipe Diameter mm ĭ5ĭ
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Swing Motor Model MP24AN MP24AN
2XWSXWRI6ZLQJ0RWRU W 1.5 1.5
)XVH A 3.15 3.15
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Technical Information
Service Manual
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Compressor Model 4;)%]($ 4;)%]($
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Compressor Type Rotary Rotary
L.R.A. A 20 20
Compressor RLA A 4.21 4.21
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7KURWWOLQJ0HWKRG Capillary Capillary
Operation Temp oC 16~30 16~30
Ambient Temp (Cooling) oC -15~43 -15~43
Ambient Temp (Heating) oC -15~24 -15~24
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Connection
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Technical Information
Service Manual
Outline Dimension Diagram
Indoor Unit
Unit:mm
Models W H D W1 W2 W3
09/12K 773 250 185 131 462 180
D
H
W
75
35
Φ55
W3W2
W1
Φ55
35
75

Technical Information
Service Manual
Outdoor Unit
257
780
596
842
286
540
320
Unit:mm
09K
12K
Unit:mm
320 782
510
712257
286
540

Technical Information
Service Manual
Function and Control
Remote Controller Introduction
Icon Display on Remote Controller
Operation introduction of remote controller
Buttons on Remote Controller
Note:
1
2
5
4
6
7
8
11
12
9
On/Off button
▲/ button
3Fan button
Swing button
X-Fan button
Turbo button
Light button
10
Temp button
I Feel button
Timer button
Sleep button
Mode button
▲
2
5
7
9
4
12
3
1
6
8
10
11
Send signal
Turbo mode
8ćheating function
Set temperature
Set time
TIMER ON /TIMER OFF
Child lock
Up & down swing
Set fan speed
Light function
Temp. display type
:Set temp.
:Outdoor ambient temp.
:Indoor ambient temp.
Sleep mode
Heat mode
Fan mode
Dry mode
Cool mode
Auto mode
Operation mode
I feel function
X-fan mode
health function
ventilation operation
“ ” This is a general remote controller. Some models have this function while some do not. Please refer to the
actual models.
● This is a general use remote controller, it could be used for the air conditioners with multifunction; For some function, wh
ich
the model doesn't have, if press the corresponding button on the remote controller that the unit will keep the original running status.
●After putting through the power, the air conditioner will give out a sound.Operation indictor " " is ON (red indicator). After that,
you can operate the air conditioner by using remote controller.
● Under on status, pressing the button on the remote controller, the signal icon " "on the display of remote controller wi
ll
blink once and the air conditioner will give out a “de” sound, which means the signal has been sent to the air conditioner
.
● Under off status, set temperature and clock icon will be displayed on the display of remote controller (If timer on, timer off and
light functions are set, the corresponding icons will be displayed on the display of remote controller at the same time); Under on
status, the display will show the corresponding set function icons
.

Technical Information
Service Manual
1. ON/OFF button
2. MODE button
3. F
AN button
6. SLEEP button
5. SWING button
Press this button to turn on the unit. Press this button again to turn off the unit.
Each time you press this button,a mode is selected in a sequence that goes from AUTO, COOL, DRY, FAN, and HEAT *,
as the following:
AUTO COOL DRY FAN HEAT*
* Note: Only for models with heating function.
This button is used for setting Fan Speed in the sequence that goes from AUTO, , to , then back to Auto.
4.▲ / button
▲
▲Press / button to increase/decreaseset temperature.In AUTO mode,set temperature is not adjustable.
▲
Press this button to set up & down swing angle.
Auto
OFF
▲
▲
▲
▲
(horizontal louvers
stops at current position)
no display
Fan
Fan
Swing
Swing
Swing
Swing
Swing
Fan
Fan

Technical Information
Service Manual
7. TEMP button
8. TURBO button
9. I FEEL button
10. Timer button
11. X-FAN button
12. LIGHT button
NOTICE:
Press this button, you can see indoor set temperature, indoor ambient temperature
on indoor unit’s display. The setting
on remote controller is selected circularly as below:
no display
Press this button to activate / deactivate the Turbo function.
Press this button to turn on I FEEL function.
Under ON status, press this button to set timer OFF; Under OFF status, press this button to set timer ON.
Turn on the display's light and press this button again to turn off the display's light.
As for the detailed content of remote controller, please refer to QR code on the cover.
Function introduction for combination buttons
Press " " and " " buttons simultaneously 3s to lock or unlock the keypad. If the remote
pressing any button, blinks three times.
controller is locked, is displayed. In this case,
▲
Combination of " " and " " buttons: About lock
▲
▲
▲
About switch between Fahrenheit and centigradeCombination of "MODE" and " " buttons:
▲
At unit OFF, press "MODE" and " " buttons simultaneously to switch between ćand .
▲
Nixie tube on the remote controller displays
" SE " . Repeat the operation to quit the function.
Combination of "TEMP" and "TIMER" buttons: About Energy-saving Function
Press "TEMP" and "TIMER" simultaneously in COOL mode to start e nergy-saving function.
(46if Fahrenheit is adopted). Repeat the operation to quit the function.
Combination of "TEMP" and "TIMER" buttons:
About 8
ć Heating Function
Press "TEMP" and " TIMER " simultaneously in HEAT mode to start 8 ć Heating Function
Nixie tube on the remote controller displays " "
and a selected temperature of
" 8ć " .
(NOTE:X-FAN is the alternative expression of BLOW for the purpose of understanding.)

Technical Information
Service Manual
WIFI Function
Press this button to turn on the unit. Press this button again to turn off the unit. Press "MODE" and "TURBO" button simultaneously to
and "TURBO" buttons simultaneously for
10s, remote controller will send WIFI reset code and then the WIFI function will be turned on.
WIFI function is defaulted ON after energization of the remote controller.
turn on or turn off WIFI function. When WIFI function is turned on, the " " icon will be displayed on remote controller
; Long press "MODE"
● This function is only available for some models.
Replacement of batteries in remote controller
Emergency operation
If remote controller is lost or damaged, please use auxiliary button to turn on or turn off the air conditioner.
When the air conditioner is turned on, it will operate under auto mode.
aux. button
panel
WARNING:
Use insulated object to press the auto button
As shown in the fig.Open panel ,press aux.button to turn on or turn off the air conditioner.
The operation in details are as below:
1. Press the back side of remote controller marked
the cover of battery box along the arrow direction.
2. Replace two 7# (AAA 1.5V) dry batteries, and make sure the position of "+" polar and "-" polar
are correct.
3. Reinstall the cover of battery box.
signal sender battery
Cover of battery box
remove
reinstall

Installation and Maintenance
Service Manual
Brief Description of Modes and Functions
1.Basic function of system
(1)Cooling mode
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(2)Drying mode
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(3)Heating mode
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(4)Working method for AUTO mode:
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(5)Fan mode
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2. Other control
(1) Buzzer
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(2) Auto button
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(3) Auto fan
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(4) Sleep
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(5) Timer function:
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(6) Memory function
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(7) Health function
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ƽIndoor Unit

Installation and Maintenance
Service Manual
(8)I feel control mode
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(9)Entry condition for compulsory defrosting function
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(10)Refrigerant recovery function:
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(11)Ambient temperature display control mode
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displayed.
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(12)Off-peak energization function:
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(13) SE control mode
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(14) X-fan mode
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(15) 8OC heating function
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(16)Turbo function
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Installation and Maintenance
Service Manual
1. Cooling mode:
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Indoor fan operates according to set fan speed.
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according to set fan speed.
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2. Drying mode
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fan will operate at low fan speed.
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3. Fan mode
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4. Heating mode
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VWDWXV
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will be energized in 2~3mins delay.
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5. Freon recovery mode
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6. Compulsory defrosting
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ƽOutdoor Unit

Installation and Maintenance
Service Manual
7. Auto mode
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8. 8OC heating
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When power on, communication light will be blinking in a normal way (after receiving a group of correct signals,
blinking stops for 0.2s~0.3s). If theres no communication, communication light will be always on. If other ODU has
malfunction, communication light will be on for 1s and off for 1s in a circular way.

Installation and Maintenance
Service Manual
1. Select the installation location according to the require-
ment of this manual.(See the requirements in installation
part)
2. Handle unit transportation with care; the unit should not
be carried by only one person if it is more than 20kg.
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4. Ware safety belt if the height of working is above 2m.
5. Use equipped components or appointed components dur-
ing installation.
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ishing installation.
Electrical Safety Precautions:
Notes for Installation and Maintenance
Safety Precautions:
Important!
Please read the safety precautions carefully before
installation and maintenance.
The following contents are very important for installation
and maintenance.
Please follow the instructions below.
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instructions.
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electrical codes.
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manual.
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technician according to local regulations and the
instructions given in this manual.
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incorrect operation to prevent electric shock, casualty and
other accidents.
1. Cut off the power supply of air conditioner before
checking and maintenance.
2. The air condition must apply specialized circuit and
prohibit share the same circuit with other appliances.
3. The air conditioner should be installed in suitable
location and ensure the power plug is touchable.
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during installation and maintenance.
5. Have the unit adequately grounded. The grounding
wire cant be used for other purposes.
6. Must apply protective accessories such as protective
boards, cable-cross loop and wire clip.
7. The live wire, neutral wire and grounding wire of
power supply must be corresponding to the live wire,
neutral wire and grounding wire of the air conditioner.
8. The power cord and power connection wires cant be
pressed by hard objects.
9. If power cord or connection wire is broken, it must be
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poisonous gas; Prohibit prolong the connection pipe by
welding.
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any other refrigerant. Never have air remain in the refrigerant
line as it may lead to rupture or other hazards.
3. Make sure no refrigerant gas is leaking out when
installation is completed.
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measure to minimize the density of refrigerant.
5. Never touch the refrigerant piping or compressor without
wearing glove to avoid scald or frostbite.
Warnings
Refrigerant Safety Precautions:
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electric shock or injury.
Installation Safety Precautions:
Part ė: Installation and Maintenance
10. If the power cord or connection wire is not long enough,
please get the specialized power cord or connection wire
from the manufacture or distributor. Prohibit prolong the wire
by yourself.
11. For the air conditioner without plug, an air switch must
be installed in the circuit. The air switch should be all-pole
parting and the contact parting distance should be more than
3mm.
12. Make sure all wires and pipes are connected properly and
the valves are opened before energizing.
13. Check if there is electric leakage on the unit body. If yes,
please eliminate the electric leakage.
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if it is burnt down; dont replace it with a cooper wire or
conducting wire.
15. If the unit is to be installed in a humid place, the circuit
breaker must be installed.

Installation and Maintenance
Service Manual
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refrigerant.
Any presence of air or other foreign substance in the refrigerant
circuit will cause system pressure rise or compressor rupture,
resulting in injury.
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which is not comply with that on the nameplate or unqualified
refrigerant.Otherwise, it may cause abnormal operation, wrong
action, mechanical malfunction or even series safety accident.
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repairing the unit, be sure that the unit is running in cooling mode.
Then, fully close the valve at high pressure side (liquid valve).About
30-40 seconds later, fully close the valve at low pressure side (gas
valve), immediately stop the unit and disconnect power. Please note
that the time for refrigerant recovery should not exceed 1 minute.
If refrigerant recovery takes too much time, air may be sucked in and
cause pressure rise or compressor rupture, resulting in injury.
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valve are fully closed and power is disconnected before detaching
the connection pipe.
If compressor starts running when stop valve is open and connection
pipe is not yet connected, air will be sucked in and cause pressure
rise or compressor rupture, resulting in injury.
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connected before the compressor starts running.
If compressor starts running when stop valve is open and connection
pipe is not yet connected, air will be sucked in and cause pressure
rise or compressor rupture, resulting in injury.
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If there leaked gas around the unit, it may cause explosion and other
accidents.
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wire is not long enough, please contact a local service center
authorized and ask for a proper electric wire.
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the indoor and outdoor units. Firmly clamp the wires so that their
terminals receive no external stresses.
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To ensure safety, please be mindful of the following
precautions.

Installation and Maintenance
Service Manual
Safety Precautions for Installing and Relocating the Unit:
Warnings
To ensure safety, please be mindful of the following precautions.
1. When installing or relocating the unit, be sure to keep the refrigerant circuit free from air or substances other than the
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2.When installing or moving this unit, do not charge the refrigerant which is not comply with that on the nameplate or
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3.When refrigerant needs to be recovered during relocating or repairing the unit, be sure that the unit is running in cooling
mode.Then, fully close the valve at high pressure side (liquid valve).About 30-40 seconds later, fully close the valve at low
pressure side (gas valve), immediately stop the unit and disconnect power. Please note that the time for refrigerant recovery
should not exceed 1 minute.
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4.During refrigerant recovery, make sure that liquid valve and gas valve are fully closed and power is disconnected before
detaching the connection pipe.
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5.When installing the unit, make sure that connection pipe is securely connected before the compressor starts running.
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7.Do not use extension cords for electrical connections. If the electric wire is not long enough, please contact a local service
center authorized and ask for a proper electric wire.
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that their terminals receive no external stresses.
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Safety Precautions for Refrigerant
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the greenhouse effect is also lower. R32 has got very good thermodynamic features which lead to a really high energy
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WARNING:
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personnel may be dangerous. The appliance shall be stored in a room without continuously operating ignition sources. (for
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not contain odour.
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Installation and Maintenance
Service Manual
Safety Operation of Flammable Refrigerant
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Installation notes
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operating heater).
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The minimum room area is shown on the nameplate or following table a.
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table a - Minimum room area(m2)
Maintenance notes
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— Its only allowed to be operated in the rooms that meet the requirement of the nameplate.
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— The continuous ventilation status should be kept during the operation process.
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— Replace the vague or damaged warning mark.
Welding
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a. Shut down the unit and cut power supply
b. Eliminate the refrigerant
c. Vacuuming
d. Clean it with N2 gas
e. Cutting or welding
f. Carry back to the service spot for welding
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Filling the refrigerant
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each other.
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when its removed.
Safety instructions for transportation and storage
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Installation and Maintenance
Service Manual
Main Tools for Installation and Maintenance
1. Level meter, measuring tape
4. Electroprobe
7. Electronic leakage detector
10. Pipe pliers, pipe cutter
2. Screw driver
5. Universal meter
8. Vacuum pump
11. Pipe expander, pipe bender
3. Impact drill, drill head, electric drill
6. Torque wrench, open-end wrench, inner
hexagon spanner
9. Pressure meter
12. Soldering appliance, refrigerant container


Installation and Maintenance
Service Manual
Installation
Installation Dimension Diagram
Drainage pipe
At least 250cm
At least 15cm
At least 50cm
At least 50cm
At least
30cm
At least 300cm
Space to the obstruction
Space to the
obstruction
Space to the
obstruction
Space to the ceiling
Space to the obstruction
Space to the obstruction
At least 30cm
At least 15cm
At least 15cm
Space to the wall
Space to the wall
Space to the wall
At least 200cm

Installation and Maintenance
Service Manual
Preparation before installation
Prepare tools
Read the requirements
for electric connection
select installation
location
Select indoor unit
installation location
Install wall-mounting
frame, drill wall holes
Connect pipes of indoor
unit and drainage pipe
Connect wires of indoor unit
Connect wires of outdoor unit
Bind up pipes and
hang the indoor unit
Make the bound pipes pass
through the wall hole and then
connect outdoor unit
Neaten the pipes
Vacuum pumping and leakage detection
Check after installation and test operation
Finish installation
Note: this flow is only for reference; please find the more detailed installation steps in this section.
Select outdoor unit
installation location
Install the support of outdoor unit
(select it according to the actual situation)
Install drainage joint of outdoor unit
(only for cooling and heating unit)
Connect pipes of outdoor unit
Start installation
Fix outdoor unit
Installation procedures