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Cleaning Unit

  How to check Micro Mesh Stainless Filter installation


Keep the filter mesh facing up, and align the filter with 
the top face of the indoor unit, and then slide and push 
it in. (The shape of the left and right filters are the same.)

Slide the buckles of the filter mesh leftwards to lock 
the filter mesh. (Each in both sides)

Verifying installation of the terminal block and the front panel 

When the indoor unit is installed in a corner, please set it by following the procedure below to achieve the maximum effect: 

Left-corner installation

Right-corner installation

Verifying cleaning of the filter mesh

Check whether the terminal block 
cover has been installed. 

To close the front panel, press its right and left sides first and 
then the center until it clicks into place. 

front panel

Fixing screws 

the terminal block

Before turning on the power of the air conditioner, make sure that the filters (2 pieces at the top and 2 pieces in 
front) have been installed properly and locked.

Neck

Filter mesh buckle

Settings of [Dynamic Wind Deflection]

Less than 
1 m

Indoor unit

Indoor unit

Indoor unit

Walls

Keep holding it

Hold it for more than 

5 seconds

The setting completes when the 
machine beeps. 

When the air guide mode is set to 
evasion, the air is sent to all areas 
except the left side.

This is the factory default setting. 

When the room and installing location change, please set the remote controller again. 

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Arm

Arm

Arm

Arm

Step

Step

 CAUTION

Screw

Screw

Screw

storage 
box

Screw

front panel

Screw cover

Terminal block cover

Terminal block cover 

Screw

Screw

Screw

front panel

Screw cover

Terminal block cover

Terminal block cover

Install the storage box and the panel.

H-LINK

[For details on part numbers of optional accessories, 
refer to the catalogue.]
To connect to H-LINK, purchase a RAC adaptor separately. 

•  When connecting wires, be sure to open the electric 

box cover. 
Connect the socket of RAC adaptor to CN7.
Reattach the electric box cover. 

For details on the RAC adaptor, refer to its user manual.
Please take care when connecting the optional adaptor 
to prevent the edge of the circuit board from cutting the 
lead wire. 
Remove and install the front cover by referring to this 
Instruction Manual. 

• 
• 
• 
• 

• 

CN7

 CAUTION

Before trial running of the air conditioner, be sure to check the following steps 1 and 2, and then operate it 
in the cooling-heating room.

Front Panel

CN7

Wrench

Torque wrench

Flare nut

Half union

Female side

Male side

INST

ALLA

TION OF REFRIGERA

TING PIPES 

AND 

AIR REMOV

AL

1.  Pipe Cutting and Flaring

• 

Use a pipe cutter to cut the pipe and remove burr.

 CAUTION

• 

Remove burr

 

  If burr is not removed, it may cause leakage.

• 

Point the side to be trimmed downwards during 
trimming to prevent copper chips from entering the 
pipe.

2. Pipe Connection

• 

Remove the flare nut from the pipe of the indoor  

spanner while holding down the half union (male 
side) with a spanner.

• 

Do not crush the pipe while bending it.

• 

Apply refrigerant oil on the connection part. After 
carrying out the center alignment and manual 
tightening of the flare nut, tighten the flare nut 
securely with a torque wrench (spanner).

Copper pipe

Trimming tool

• 

Before flaring, please put on the flare nut.  

Copper pipe

Die

A

Die

 

Please use exclusive tool for refrigerant R410.

 Outer Diameter 

A (mm) Rigid Flaring Tool

 

(ø) 

For R410A tool 

For R22 tool

6.35 (1/4 

) 0~0.5 

1.0

) 0~0.5 

1.0

3.  Remove of Air from the Pipe and Gas Leakage Inspection

 CAUTION

• 

When removing flare nut of the indoor unit, first remove the nut of small diameter side.  

• 

Prevent water from entering into the piping when connecting.

• 

Be sure to tighten the flare nut to the specified torque with a torque wrench.

  If the flare nut is overtightened, it may split after sometime and may cause refrigerant leak. 
• 

When using a control valve, make sure that the packing is not deteriorated and avoid excessive tightening 
of the handle. Otherwise, gas may leak from the service valve.

* Tightening torque must be as shown in the table below.

 

 

Outer diameter 

Torque N•m

)

m

c

f

g

k

(

 

)

ø

(

 

e

p

i

p

 

f

o

 

 

Small diameter side 

6.35 (1/4 

) 13.7~18.6 

(140~190)

Large diameter side 

12.7 (1/2 

) 44.1~53.9 

(450~550)

 

Small diameter side 

6.35 (1/4 

) 19.6~24.5 

(200~250)

 

Large diameter side 

12.7 (1/2 

) 29.4~34.3 

(300~356)

                       Valve core cap 

 

12.3~15.7 (125~160)

Valve 
head 
cap

From the viewpoint of global environment protection, 
air purge type should be vacuum pump method.

1

•  Remove the valve head cap 

of the service valve.

•  Remove the cap of valve 

core and connect the charge 
hose.

•  Connect the vacuum pump 

adapter to the vacuum pump 
and connect the charge hose 
to the adapter.

Valve head cap 
for the service 
valve at small 
diameter side

Valve head 
cap for the 
service valve 
at large 
diameter side

Cap of valve core

•  Loosen the spindle of the service valve with 

small diameter by 1/4 turn and tighten the spindle 
immediately after 5 to 6 seconds. 

•  Remove the charging hose from the service valve.

•  Unscrew the spindle of both the 

service valves in anticlockwise 
direction to allow the flow of 
refrigerant (unscrew halfway).

•  Tighten the cap of valve head. 

Check and make sure that there 
is no gas leakage.

•  Fully tighten the “Hi” shuttle of the manifold valve and 

completely unscrew the “Lo” shuttle. Run the vacuum 
pump. (Adapter is switched on)

Make sure the meter 
reaches -0.1MPa
 (-76cmHg) during pumping.

Closed

When pumping starts, slightly loosen
the flare nut to check if air sucked in. 
Then tighten the flare nut. 

Meter showing pressure

R410A Manifold valve

Vacuum pump

Ball valve

Vacuum pump adapter

Charge hose

Ball valve

Valve

Please leave the ball valve fully open 
at all times.

3

4

2

Body of service valve

Hexagonal 
wrench key

Cap of valve 
head

Cap of valve 
head

Cap of 
valve core

Wiring of the Outdoor Unit

Please remove the side cover and terminal cover for wiring connection.

FINAL

 ST

AGE

 WARNING

• 

The connecting cord must be fix with cord band 

  Otherwise rain water may enter and cause short circuit. Besides, an external 
   force may apply to the connection part of the connecting cord and could result 
   in heat and fire.   
• 

The terminal cover and side cover must be installed after work is done.

Terminal cover

Terminal marking

              A B C  

Cord band

1.  Heat Insulation and Finishing of Piping

 CAUTION

• 

Completely seal any gap with putty

  High humidity air inside the wall or the outdoor may 

go in to the room and could result in dripping of dew. 
It could also cause smell or odor present outdoor and 
inside the wall spreading into the room.

•  Cover the pipe connection with the auxiliary insulation sheet, 

wrap the tape without any gap. 

•  If there is gap or over-tightened, it may cause condensation.

•  Please wrap the pipe and power cord together with vinyl 

outdoor units on page 2.

•  To enhance the heat insulation and to prevent water 

condensation, please cover the outdoor part of the drain 
hose and pipe with insulation sheet.

•  When using an exit cover, do not attach a bush for pipe.
•  When an exit cover is not used, seal the gap of the hole 

on the wall, bush and pipe completely with putty. If an exit 
cover is used, seal the gap of the hole on the wall and pipe 
completely with putty. In the case of embedded piping, 

sealing could cause entering of high humidity air into the 
wall or indoor unit, which could result in dripping of dew. It 
could also cause smell or odor present outdoor and inside 
the wall spreading into the room.

Auxiliary 
insulation sheet

Insulate 
and wrap 
with tape

Connecting cord

Refrigerating 
pipe

Drain hose

Seal with putty

About 90mm

Putty

Putty

Bush for pipe

Do not cut the drain 
hose in the middle

When using an exit 
cover, do not attach a
bush for pipe.

2.  Affixing the Remote Controller and Installing the Anti-mold Wasabi Cassette

•  The remote controller may be affixed to a wall or pillar with the remote controller mounting screw.
•  When operating the air conditioning with the remote controller attached, please make sure that the signal is received by 

the air conditioning. Furthermore, 

received.

•  Install the   anti-mold wasabi cassette. 
  (Refer to page 

of the Operation Manual)

Noise may occur if the anti-mold wasabi 
cassette is not installed properly.

IMPORTANT

Fuse Capacity

25A time-delay fuse

 Anti-mold  wasabi 

 cassette

Installation methods

Wall surface

Screws fixing 
the remote 
controller

Works to be done when transferring or removing air 
conditioner              

From the viewpoint of global environment protection, 
refrigerant should be recovered (pumped down) when the 
air conditioner is transferred or removed.

  Perform force-cooling operation (refer to “Force-cooling 

operation” on page 12) for about 5 minutes as a preliminary 
operation.

  Tighten the spindle of the service valve at small diameter 

side in clockwise direction.

  Continue the force-cooling operation for another 1-2 

minutes, and then tighten the spindle of the service valve 
at large diameter side in clockwise direction.

  Stop the force-cooling operation.

CONNECTION OF POWER CORD

Procedures of Wiring

C

B

C

A

B

A

AC 220V
1ø 50Hz

Indoor unit

Outdoor unit

Connecting 

cord

ø2.0

 WARNING

Wiring of the Indoor Unit

  Remove the front panel. (Refer to “Removing and 

Attaching the Front Panel” on page 13) 

  Remove the terminal cover and screw, hold the upper 

part when removing. 

Remove the lower cover. 

Gas Leakage Inspection

Please use gas leakage detector 
to check if leakage occurs at 
connection of Flare nut as 
shown on the right.

If gas leakage occurs, further 
tighten the connection to stop 
leakage. (Be sure to use R410A 
detector.)

Detail of Cutting the Connecting Cord

• Indoor unit

• Outdoor unit

70mm

10mm

100mm

Connecting cord

Connecting cord

Green + Yellow 
(ground)

160mm

C

70mm

10mm

10mm

45mm

Strip 
wires

Strip 
wires

Strip 
wires

Green + 
Yellow

10mm

20mm

160mm

10mm

Bring the connecting cord 
from the rear surface to the 
front surface through the 
cable guide. 

   The connecting cord should 

be  fix with the terminal.

  Tightening 

torque 

reference 

value: 

 1.2~1.6N•m 

(12~16kgf•cm)

   Excessive tightening may 

damage the terminal.

Connect the connecting cord 
and  fix with cord band. 

Hook onto the claw at the 
lower part of the terminal 
cover and  fix with screw.

A

B

C

A

B

Screw

Terminal cover

Lower cover

Drain hose

$

%

&

Cable 
guide

Refrigerating 
pipe

Connecting 
cord

Cord band

Connecting 
cord

Address

Address 

3.  Remove the Protection Sheet

•  Remove the protection sheet on the display panel.

4.  Power Source and Operation Test

   Power source

 WARNING

• 

Never modify or extend the power cord.

• 

Keep additional length for the power cord and do not 
render the plug under external force as this may cause 
poor contact.

• 

• 

The power cable easily generates heat. Do not bring 
the cable together with a wire or vinyl tie.

 CAUTION

• 

Use a new power outlet.

 

Old power outlet may cause insufficient electrical contact, 
which could result in unforeseen accident.

• 

Connect and disconnect the power plug a few times 
to ensure smooth plug-in before completely insert the 
power plug into the power outlet.

   Operation test

•  Please ensure that the air conditioner is in normal operating 

condition during the operation test.

•  Explain to your customer about the proper operation procedures 

as described in the operation manual.

•  If the indoor unit won’t operate, check the cable for correct 

connection.

   Force-cooling operation

•  When the temporary switch of the indoor unit is pressed for 

more than 5 seconds, the force-cooling operation starts.

  Use this mode when performing the failure diagnosis or 

collecting refrigerant into the outdoor unit.

•  Press the temporary switch again or use the remote controller 

to stop the force-cooling operation once this operation is 
completed.

 CAUTION

• 

Do not operate the unit for more than 5 minutes while 
the spindle of the service valve is closed.

 CAUTION

• 

Outdoor supply cords shall not be lighter than polychloroprene sheathed 
flexible cord with code designation 60245 IEC 57.

This is utilized to avoid the interference of remote controller signals when two indoor units 
are installed in the same room. The Address Selector Switch is on the outside of the remote 
controller battery cover. (Factory setting is set to “A”)
•  Setting the address (to avoid interference)
  Only one of the two indoor units has to be set (turn off the power to the other indoor unit).

 While pointing the remote controller transmitter/receiver at the indoor unit, move the 

switch of the Address Selector Switch to “B”.

  The channel is set when the unit beeps, confirming it has received the signal.

•  After changing the address, please confirm the unit’s operation with the remote controller. 

If the unit does not operate, return the switch to “A” and set the switch again.

Address selector switch

Switch

   About Address Selector Switch

Temporary switch 
(Force-cooling operation starts when the 
switch is pressed for more than 5 seconds. 
Press the switch again and use the remote 
controller to stop the operation.)

  Push the end of the right-side arm outward to release the tab. 

  Move the left-side arm outward to release the left tab, 

and then pull the panel towards you.

Removing and Attaching the Front Panel  

• 

Be sure to hold the front panel with both hands to detach and attach it.

Please refer to the operation manual on how to open and close the front panel.

Attaching

Removing

  Insert the shaft of the left arm along the step on the unit into the hole. 

  Securely insert the shaft of the right arm along the step on the 

unit into the hole.

  Make sure that the front panel is securely attached, and then close 

the front panel.

REMOVING 

AND 

A

T

T

ACHING THE FRONT COVER

OPERA

TION CHECK

When the power of the air conditioner turns on, the “Filter Cleaning Operation” starts automatically.

 The 

 CLEAN indicator is lit during the filter cleaning operation.  

Filter Lock

•  Make sure that the top filters have  

been locked. Lock the filters if 
they are not locked.  (The filters  
may come off during the operation 
if they are not locked.)

Do not touch the cleaning unit during 
the filter cleaning operation.
Doing so could result in injury or 
failure of the appliance. 

Unlike the coventional type of air conditioner, this air conditioner has no 
grille at its top surface, It is because this air conditioner is equipped with the 
cleaning unit, and to prevent the top surface from getting dirty easily.   

•  Filter cleaning operation check will take approximately 

5 minutes

 for the cleaning unit to make 

one cycle

 of back and forth 

movement. Make sure that the cleaning unit is actually working by a visual inspection from the top of the indoor unit.

How to remove the panel frame

   Attaching the Front Cover

  Make sure that the dew receiving pan and the cleaning unit 

are securely attached.
After attaching the left and right sides of the front cover onto 
the unit, ensure that the top tabs (2 places) have been fixed
on.

•  Remove the front panel and check if the filter locks (2 pcs) are tripped or slant.
•  If the filters are not inserted properly, refer to following “Installing the Micro Mesh Stainless Filters”. 
•  Please perform “Filter cleaning operation check” again after reinstalled the filters. 

Installing the Micro Mesh Stainless Filters

Move

Move

Insert

Insert

Insert

Insert

When being installed or removed, the panel is likely to slide off. 
When lifting to open the panel, do not apply too much force. Otherwise, 
the panel may come off or malfunction may be caused.

Unscrew screws of the terminal block cover, 
and remove the terminal block.
Remove the screw cover below the panel frame, 
and unscrew the 7 screws from the panel frame.

Insert the screw driver into the hole on the right 
upper part of the panel frame, and loosen the jaw.

Hold the panel frame and pull it along the direction 
indicated by the arrow to remove it. 

Remove the front panel and the storage box.

Tighten the 7 screws in the panel. 

Install the screw cover. 

Install the terminal block cover, and tighten the screws.

To verify cleaning of the 
filter mesh, send wind 
when upper and lower wind 
boards are closed. The 
cleaning indicator lights up. 

After the cleaning action is 
acknowledged, if the cleaning 
diagnosis indicator blinks (4" 
on/1" off), it indicates abnor-
mality in cleaning operation of 
the filter mesh. In this case, 
refer to the Operating 
Instructions for a solution.

Cleaning indicator

Walls

Walls

Less than 
1 m

More than 
1 m

More than 
1 m

Keep holding it

Hold it for more than 

5 seconds

The setting completes when the 
machine beeps. 

The setting completes when the 
machine beeps. 

When the air guide mode is set to 
evasion, the air is sent to all areas 
except the right side.

Keep holding it

Hold it for more than 

5 seconds

Remote controller (with 
the upper cover opened)

Central installation

After pumping for about 10-15 minutes, completely 
loosen the “Lo” shuttle and switch off the vacuum 
pump. (Adapter is switched off)

seal the gap of the pipe completely with putty. Incomplete 

 CLEAN indicator blinks. 

•  If the  

 CLEAN

 

completion due to  an abnormal condition.

  In this case, refer to “Check the Operation of the Filter Cleaning  Unit” and “Troubleshooting” of the operation manual and 

take appropriate actions.

Fix on the top tabs (2 places)

  Otherwise the nut of big diameter side will fly out. 

•  Close the front panel properly.
• If the “ON/OFF” button on the remote control is pressed  during the operation check, the operation check is stopped   

• If the  filters are not installed properly, “Filter Cleaning Operation” is found abnormal and the 

The filters may come off during operation if they are not installed properly. 

before its completion. Wait until the operation check is completed without pressing any button on the remote controller.   

by turning on the fluorescent lighting even during the day. 

•  Lighting fixtures with electronic starters may shorten the reception distance and may even interfere with the signal being  

tape as shown in the figure of the installation of indoor and  

Do not fix the power cord with U-shape nail.

•  The Timer lamp flashes when force-cooling is in operation. 

unit by removing the flare nut (female side) with a  

fluorescent lighting may affect the reception of the signal, therefore, please make sure

•  If the supply cord is damaged, it must be replaced by a special cord (Maker’s service parts) available from the manufacturer 

or its service agent.

•  The naked part of the wire core should be 10mm fix it to the terminal tightly. Then try to pull the individual wire to check if the 

contact is tight. Improper insertion may burn the terminal.

•  Be sure to use only wire specified for the use of air-conditioner.
•  Be sure to use only power cables approved form the authorities in your country. For example in Germany: Cable type: NYM 

3×2.5mm

2

. (Fuse = 16A time delay)

•  Please refer to the manual for wire connection, the wiring technique should meet the standard of the electrical

 installation.

•  Leave some space in the connecting cord for maintenance purpose and be sure to secure it with the cord band.
•  Secure the connecting cord along the coated part of the wire using the cord band. Do not exert pressure on the wire as this 

may cause overheating or fire.

•  There is a AC voltege of 220V between the A and B terminals. Therefore, before servicing, be sure to remove the plug from 

the AC outlet.

12.7 (1/2 

10030A

 :  A  >

Display panel

㪚㪣㪜㪘㪥

㪚㪣㪜㪘㪥

On twice/Off
for 2 

 indicator blinks during the “Filter Cleaning Operation” means that the operation is stopped before its 

㪚㪣㪜㪘㪥

㪚㪣㪜㪘㪥

Off

On

  P

lace

 

a

 b

attery

 

in

 

t

h

e

 

re

m

ote

 

controller

 

an

press

 

t

h

e

 

reset

 

switc

h. (R

efer

 

to

 

pa

g

e

 

 

of

 

t

h

e

 R

e

m

ote

 C

ontroller

 M

an

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