Daitsu 3NDA8405 User manual

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Split Air Conditioner
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This appliance is not intended for use by persons (including children) with reduced physical, sensory
or mental capabilities, or lack of experience and knowledge, unless they have been given supervi-
sion or instruction concerning use of the appliance by a person responsible for their safety.
Children should be supervised to ensure that they do not play with the appliance.
This marking indicates that this product should not be disposed with other household
wastes throughout the EU. To prevent possible harm to the environment or human
health from uncontrolled waste disposal, recycle it responsibly to promote the sustaina-
ble reuse of material resources. To return your used device, please use the return and
collection systems or contact the retailer where the product was purchased. They can
take this product for environmental safe recycling.
R410A(R32/125: 50/50):
Content
Operation Notices
Precautions...........................................................................................................1
Parts Name...........................................................................................................6
ScreenOperation Guide
.......................................................................7
Emergency operation .........................................................................................11
Maintenance
Clean and Maintenance......................................................................................11
Malfunction
Malfunction analysis ...........................................................................................15
2087.5
Remote control operation ............

1
Precautions
WARNING
Operation and Maintenance
•This appliance can be used by children aged from 8
years and above and persons with reduced physical,
sensory ormental capabilities or lack of experience
and knowledge if they have been given supervision or
instruction concerning use of the appliance in a safe
way and understand the hazards involved.
•Children shall not play with the appliance.
•Cleaning and user maintenance shall not be made by
children without supervision.
•Do not connect air conditioner to multi-purpose socket.
Otherwise, it may cause fire hazard.
•Do disconnect power supply when cleaning air
conditioner. Otherwise, it may cause electric shock.
•If the supply cord is damaged, it must be replaced by
the manufacturer, its service agent or similarly qualified
persons in order to avoid a hazard.
•Do not wash the air conditioner with water to avoid
electric shock.
•Do not spray water on indoor unit. It may cause electric
shock or malfunction.
•After removing the filter, do not touch fins to avoid
injury.
•Do not use fire or hair dryer to dry the filter to avoid
deformation or fire hazard.

2
Precautions
WARNING
• Maintenance must be performed by qualified
professionals. Otherwise, it may cause personal injury
or damage.
• Do not repair air conditioner by yourself. It may cause
electric shock or damage. Please contact dealer when
you need to repair air conditioner.
• Do not extend fingers or objects into air inlet or air
outlet. It may cause personal injury or damage.
• Do not block air outlet or air inlet. It may cause
malfunction.
• Do not spill water on the remote controller, otherwise
the remote controller may be broken.
• When below phenomenon occurs, please turn off air
conditioner and disconnect power immediately, and then
contact the dealer or qualified professionals for service.
• Power cord is overheating or damaged.
• There’s abnormal sound during operation.
• Circuit break trips off frequently.
• Air conditioner gives off burning smell.
• Indoor unit is leaking.
• If the air conditioner operates under abnormal conditions,
it may cause malfunction, electric shock or fire hazard.
• When turning on or turning off the unit by emergency
operation switch, please press this switch with an
insulating object other than metal.
• Do not step on top panel of outdoor unit, or put heavy
objects. It may cause damage or personal injury.

3
Precautions
WARNING
Attachment
•Installation must be performed by qualified professionals.
Otherwise, it may cause personal injury or damage.
•Must follow the electric safety regulations when
installing the unit.
•According to the local safety regulations, use qualified
power supply circuit and circuit break.
•Do install the circuit break. If not, it may cause malfunction.
•An all-pole disconnection switch having a contact
separation of at least 3mm in all poles should be
connected in fixed wiring.
•Including an circuit break with suitable capacity, please
note the following table.Air switch should be included
magnet buckle and heating buckle function, it can
protect the circuit-short and overload.
•Air Conditioner should be properly grounded. Incorrect
grounding may cause electric shock.
•Don’t use unqualified power cord.
•Make sure the power supply matches with the
requirement of air conditioner.Unstable power supply
or incorrect wiring or malfunction. Please install proper
power supply cables before using the air conditioner.
•Properly connect the live wire, neutral wire and
grounding wire of power socket.
•Be sure to cut off the power supply before proceeding
any work related to electricity and safety.

4
Precautions
WARNING
• Do not put through the power before finishing installation.
• If the supply cord is damaged, it must be replaced by
the manufacturer, its service agent or similarly qualified
persons in order to avoid a hazard.
• The temperature of refrigerant circuit will be high,
please keep the interconnection cable away from the
copper tube.
• The appliance shall be installed in accordance with
national wiring regulations.
• Installation must be performed in accordance with the
requirement of NEC and CEC by authorized personnel
only.
• The air conditioner is the first class electric appliance. It must
be properly grounding with specialized grounding device
by a professional. Please make sure it is always grounded
effectively, otherwise it may cause electric shock.
• The yellow-green wire in air conditioner is grounding
wire, which can’t be used for other purposes.
• The grounding resistance should comply with national
electric safety regulations.
• The appliance must be positioned so that the plug is
accessible.
• All wires of indoor unit and outdoor unit should be
connected by a professional.
• If the length of power connection wire is insufficient,
please contact the supplier for a new one. Avoid
extending the wire by yourself.

5
Precautions
WARNING
•For the air conditioner with plug, the plug should be
reachable after finishing installation.
•For the air conditioner without plug, an circuit break
must be installed in the line.
•If you need to relocate the air conditioner to another
place, only the qualified person can perform the work.
Otherwise, it may cause personal injury or damage.
•Select a location which is out of reach for children and
far away from animals or plants.If it is unavoidable,
please add the fence for safety purpose.
•The indoor unit should be installed close to the wall.
Working temperature range
Indoor side DB/WB (°C) Outdoor side DB/WB (°C)
Maximum cooling 32/23 43/26
Maximum heating 27/- 24/18
NOTICE:
•The operating temperature range (outdoor temperature) for cooling is -15ºC~43ºC;
Heating temperature range for the model without electric heating belt for chassis
is -15ºC~24ºC Heating temperature range for the model with electric heating belt
for chassis is -20ºC~24ºC.

6
Parts Name
NOTICE:
Actual product may be different from above graphics, please refer to actual
products.
(Display content or position may be different from
above graphics, please refer to actual products)
air inlet
panel
lter
aux.button
horizontal louver
air outlet
cooling
indicator
power
indicator
receiver
window
display
heating
indicator
temp.
indicator
drying
indicator
Indoor Unit

Introduction for buttons on remote controller
Buttons on remote controller
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
button
Timer button
Sleep button
Mode button
▲
Send signal
Turbo mode
8℃heating 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
2
5
7
9
4
12
3
1
6
8
10
11
NOTICE: “ ” This is a general remote controller. Some models have this function while some
do not. Please refer to the actual models.
7

Swing button
5
Press this button to set up & down swing angle.
Sleep button
6
Introduction for buttons on remote controller
Note:
●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 will 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 corre-
sponding 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.
▲ / button
▲
4
Press / button to increase/decreaseset temperature. In AUTO mode,
set temperature is not adjustable.
▲
▲
Fan button
3
This button is used for setting Fan Speed in the sequence that goes from AUTO,
, to , then back to Auto.
On/Off button
1
Press this button to turn on the unit. Press this button again to turn off the unit.
Mode button
2
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 is a general use remote controller, it could be used for the air conditioners
with multifunction; For some function, which the model doesn't have, if press
the corresponding button on the remote controller that the unit will keep the
original running status.
▲
When setting Timer On or Timer Off, press "▲" or " " button to adjust the time.
Under Cool, Heat or Dry mode, press this button to turn on Sleep function.
Press this button again to cancel Sleep function. Under Fan and Auto modes, this
function is unavailable. 8

Press this button to achieve the on and off of healthy and scavenging functions in
LCD displays " ". Press the button for the second time to start healthy and
scavenging functions simultaneously; LCD displays " " and " ". Press this
button for the third time to quit healthy and scavenging functions simultaneously.
Press the button for the fourth t ime to start healthy function; LCD display " ".
Press this button again to repeat the operation above.
Note:
● Outdoor temperature display is not available for some models. At that time, indoor
unit receives " " signal, while it displays indoor set temperature.
will change quickly if holding " " or " " button). Time setting range is 0.5~24hours.
Press this button again to confirm timer setting and the characters of HOUR ON
(OFF)will stop flashing.
If the characters are flashing but you haven’t press timer button,timer setting
status will be quit after 5s.If timer is confirmer, press this button again to cancel timer.
●Under ON status, press this button to set timer OFF; Under OFF status, press
this button to set timer ON.
● Press this button once and the characters of HOUR ON (OFF) will flash to be
displayed. Meanwhile, press " " button or " " button to adjust timer setting (time
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
Turbo button
Press this button to activate / deactivate the Turbo function.
Introduction for buttons on remote controller
Press this button in COOL or DRY mode to turn on X-fan function.
Press this button to
turn on the display's light and press this button again to turn
off the display's
light.
When this function is started up, indoor fan will still operate at low fan speed for a
while after turning off the unit by remote controller.
Function introduction for combination buttons
Combination of " " and " " buttons: About lock
Press " " and " " buttons simultaneously 3s to lock or unlock the keypad. If the remote
three times.
controller is locked, is displayed. In this case, pressing any button, blinks
▲
▲
▲
▲
▲
▲
▲
▲
7Temp button
8
10
9
12
11
Timer button
Light button
X-Fan button
button
● This function is applicable to partial of models.
9

Replacement of batteries in remote controller
Function introduction for combination buttons
Combination of "MODE" and " " buttons:
About switch between Fahrenheit and centigrade
Nixie tube on the remote controller displays " SE " . Repeat the operation to quit the function.
At unit OFF, press "MODE" and " " buttons simultaneously to switch between ℃and ℉.
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
℃ Heating Function
Press "TEMP" and " TIMER " simultaneously in HEAT mode to start 8 ℃ Heating Function
Nixie tube on the remote controller displays " " and a selected temperature of " 8℃ " .
WIFI Function
Press "MODE" and "TURBO" button simultaneously to turn on or turn off WIFI
remote controller; Long press "MODE" 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.
function. When WIFI function is turned on, the " " icon will be displayed on
▲
▲
●This function is only available for some models.
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
10

12
Emergency operation
If remote controller is lost or damaged, please use auxiliary button to turn on or
turn off the air conditioner. The operation in details are as below:
As shown in the g. Open panel, press aux. button to turn on or turn off the air
conditioner. When the air conditioner is turned on, it will operate under auto
mode.
panel aux. button
WARNING:
Use insulated object to press the auto button.
Clean and maintenance
WARNING:
■Turn off the air conditioner and disconnect the power before cleaning the air
conditioner to avoid electric shock.
■Do not wash the air conditioner with water to avoid electric shock.
■Do not use volatile liquid to clean the air conditioner.
Clean surface of indoor unit
When the surface of indoor unit is dirty, it is recommended to use a soft dry cloth
or wet cloth to wipe it.
NOTICE:
●Do not remove the panel when cleaning it.

13
Clean and maintenance
Clean lter
1Open panel
Pull out the panel to a certain
angle as shown in the g. 3
Clean lter
●Use dust catcher or water to
clean the filter.
●When the filter is very dirty,
use the water (below 45ºC )
to clean it, and then put it in a
shady and cool place to dry.
2
Remove lter
Remove the lter as
indicated in the g.
4Install lter
Install the lter and then close the
panel cover tightly.
WARNING
■The filter should be cleaned every three months. If there is much dust in the
operation environment, clean frequency can be increased.
■After removing the filter, do not touch fins to avoid injury.
■Do not use fire or hair dryer to dry the filter to avoid deformation or fire
hazard.

14
Clean and maintenance
1.Check whether air inlets and air outlets are blocked.
2.Check whether air switch, plug and socket are in good condition.
3.Check whether filter is clean.
4.Check whether mounting bracket for outdoor unit is damaged or corroded.
If yes, please contact dealer.
5.Check whether drainage pipe is damaged.
1.Disconnect power supply.
2.Clean filter and indoor unit’s panel.
3.Check whether mounting bracket for outdoor unit is damaged or corroded.
If yes, please contact dealer.
Notice for recovery
1.Many packing materials are recyclable materials.
Please dispose them in appropriate recycling unit.
2.If you want to dispose the air conditioner, please contact local dealer or
consultant service center for the correct disposal method.
NOTICE: Checking before use-season
NOTICE: Checking after use-season

15
Malfunction analysis
General phenomenon analysis
Please check below items before asking for maintenance. If the malfunction still
can’t be eliminated, please contact local dealer or qualied professionals.
Phenomenon Check items Solution
Indoor unit
can’t receive
remote
controller’s
signal or
remote con-
troller has no
action.
●Whether it’s interfered
severely (such as static
electricity,stable voltage)?
●Pull out the plug. Reinsert the
plug after about 3 min, and
then turn on the unit again.
●Whether remote controller
is within the signal receiving
range?
●Signal receiving range is 8m.
●Whether there are obstacles? ●Remove obstacles.
●Whether remote controller
is pointing at the receiving
window?
●Select proper angle and point
the remote controller at the
receiving window on indoor
unit.
●Is sensitivity of remote
controller low; fuzzy display
and no display?
●Check the batteries. If the
power of batteries is too low,
please replace them.
●No display when operating
remote controller?
●Check whether remote
controller appears to be
damaged.
If yes, replace it.
●Fluorescent lamp in room? ●Take the remote controller
close to indoor unit.
●Turn off the fluoresent lamp
and then try it again.
No air
emitted from
indoor unit
●Air inlet or air outlet of indoor
unit is blocked?
●Eliminate obstacles.
●Under heating mode, indoor
temperature is reached to set
temperature?
●After reaching to set
temperature, indoor unit will
stop blowing out air.
●Heating mode is turned on
just now?
●In order to prevent blowing
out cold air, indoor unit will
be started after delaying for
several minutes, which is a
normal phenomenon.

16
Malfunction analysis
Phenomenon Check items Solution
Air condi-
tioner can’t
operate
●Power failure? ●Wait until power recovery.
●Is plug loose? ●Reinsert the plug.
●Air switch trips off or fuse is
burnt out?
●Ask professional to replace
air switch or fuse.
●Wiring has malfunction? ●Ask professional to replace it.
●Unit has restarted
immediately after stopping
operation?
●Wait for 3 min, and then turn
on the unit again.
●Whether the function setting
for remote controller is
correct?
●Reset the function.
Mist is
emitted from
indoor unit’s
air outlet
●Indoor temperature and
humidity is high?
●Because indoor air is cooled
rapidly. After a while, indoor
temperature and humidity
will be decrease and mist will
disappear.
Set tempera-
ture can’t be
adjusted
●Unit is operating under auto
mode?
●Temperature can’t be
adjusted under auto mode.
Please switch the operation
mode if you need to adjust
temperature.
●Your required temperature
exceeds the set temperature
range?
●Set temperature range:
16ºC ~30ºC.
Cooling
(heating)
effect is not
good.
●Voltage is too low? ●Wait until the voltage
resumes normal.
●Filter is dirty? ●Clean the filter.
●Set temperature is in proper
range?
●Adjust temperature to proper
range.
●Door and window are open? ●Close door and window.

17
Malfunction analysis
Phenomenon Check items Solution
Odours are
emitted
●Whether there’s odour
source, such as furniture and
cigarette, etc.
●Eliminate the odour source.
●Clean the filter.
Air condition-
er operates
normally
suddenly
●Whether there’s interference,
such as thunder, wireless
devices, etc.
●Disconnect power, put back
power, and then turn on the
unit again.
Outdoor unit
has vapor
●Heating mode is turned on? ●During defrosting under
heating mode, it may
generate vapor, which is a
normal phenomenon.
“Water ow-
ing” noise
●Air conditioner is turned on or
turned off just now?
●The noise is the sound of
refrigerant flowing inside
the unit, which is a normal
phenomenon.
Cracking
noise
●Air conditioner is turned on or
turned off just now?
●This is the sound of friction
caused by expansion and/or
contraction of panel or other
parts due to the change of
temperature.

18
Malfunction analysis
Error Code
●When air conditioner status is abnormal, temperature indictor on indoor unit will
blink to display corresponding error code. Please refer to below list for identific
ation of error code.
Error code
Indoor
display
Error code Troubleshooting
Heating indicator ON 10s OFF 0.5s Means defrosting status. It’s the normal phenomenon.
E5: overcurrent protection Power indicator blinks and E5 is displayed
C5:Connector jumper malfunction Check if the connector jumper contacts the properly. If
replace the PCB, please take off the old for the new PCB.
F1:Indoor ambient temp. sensor
malfunction
Check if indoor room temp. sensor is connected properly?
F2:Evaporator temp.sensor malfunction Check if indoor tube temp. sensor is connected properly?
H6:PC motor (indoor fan) can’t run • Feedback terminal of PG motor hasn’t been connected
firmly.
• The control end of PG motor hasn’t been connected
firmly.
• Fan blade hasn’t been installed correctly and it can’t run
smoothly.
• Motor hasn’t been installed correctly and tightly.
• Motor has been damaged.
• Control panel has been damaged.
U8:Malfunction of zero cross detection
circuit for PG motor (indoor fan)
Control panel has been damaged.
Note:
If there’re other error codes, please contact qualied professionals for service.
WARNING
■When below phenomenon occurs, please turn off air conditioner and
disconnect power immediately, and then contact the dealer or qualified
professionals for service.
●Power cord is overheating or damaged.
●There’s abnormal sound during operation.
●Circuit break trips off frequently.
●Air conditioner gives off burning smell.
●Indoor unit is leaking.
■Do not repair or refit the air conditioner by yourself
■If the air conditioner operates under abnormal conditions, it may cause
malfunction, electric shock or fire hazard.
Above indicator diagram is only for
reference. Please refer to actual
product for the actual indicator and
position.