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LG
LG Room
Air Conditioner
SERVICE MANUAL
MODELS: AS-H076PB/D/M/WL1
AS-H096PB/D/M/WL1
AS-H126PA/B/D/M/S/WL1
AS-H126PA/B/D/M/S/WG1
LS-C126PB/D/M/W/K/QL1
LS-H076PB/D/M/WL1
LS-H096PA/B/D/M/S/WL1
LS-H126PA/B/D/M/S/WL1
LS-C096PB/D/ML1
LSNH096PBL1.ABLALTA
LSNH096PSL1.APXALTA
LSNH096PES1.ASMALTA
LS-H121PDL2.AWDBLAT
LS-H121P*L3
CAUTION
• BEFORE SERVICING THE UNIT, READ THE SAFETY
PRECAUTIONS IN THIS MANUAL.
• ONLY FOR AUTHORIZED SERVICE PERSONNEL.
Air Conditioner Service Manual
TABLE OF CONTENTS
LG Model Name ...............................................................................................................................................3
Safety Precautions..........................................................................................................................................4
Dimensions .....................................................................................................................................................8
Symbols used in this Manual......................................................................................................................8
Indoor Unit..................................................................................................................................................8
Outdoor Unit...............................................................................................................................................9
Product Specifications ................................................................................................................................11
Installation .....................................................................................................................................................14
Select the Best Location .........................................................................................................................14
Piping Length and Elevation.....................................................................................................................14
Preparing Work for Installation .................................................................................................................15
Fixing the Indoor Unit ...............................................................................................................................16
Drill a Hole in the wall...............................................................................................................................16
Flaring Work.............................................................................................................................................17
Connecting the Pipings ............................................................................................................................18
Connecting the Cables to the Indoor Unit ................................................................................................21
Connecting the Cables to the Outdoor Unit..............................................................................................22
Checking the Drainage.............................................................................................................................23
Forming the Piping ...................................................................................................................................23
Air Purging ...............................................................................................................................................24
Air Purging with Vacuum Pump................................................................................................................24
Front Panel Assembly ..............................................................................................................................26
Test Running ............................................................................................................................................27
Operation ......................................................................................................................................................28
Function of Controls .................................................................................................................................28
Display Function.......................................................................................................................................35
Self-diagnosis Function............................................................................................................................36
Remote Control Operations......................................................................................................................37
Disassembly ..................................................................................................................................................38
Indoor Unit................................................................................................................................................38
Schematic Diagram.......................................................................................................................................40
Electric control Device..............................................................................................................................40
Wiring Diagram.........................................................................................................................................41
Components Location ..............................................................................................................................42
Troubleshooting Guide .................................................................................................................................44
Refrigeration Cycle Diagram ....................................................................................................................44
2-way, 3-way Valve ...................................................................................................................................45
Cycle Parts...............................................................................................................................................50
Electronic Parts ........................................................................................................................................51
Exploded View ..............................................................................................................................................58
Indoor Unit...............................................................................................................................................58
Outdoor Unit............................................................................................................................................59
Replacement Parts List ................................................................................................................................61
Indoor ......................................................................................................................................................61
Outdoor ....................................................................................................................................................67
2 Room Air Conditioner
LG Model Name
2003~
1
Code
1
2
-
3
Type
4
5
6
Code of Model
Producing Center,
Refrigerant
A~Z
7
8
9
10
Meaning
L: Chang-won R22
A: Chang-won R410A
C: Chang-won R407C
T: China
U: China R410A
V: Vietnam
S: Out Sourcing
N: India
Z: Brazil
D: Indonesia
X: Mexico
K: Turkey R22
E: Turkey R410A
H: Thailand
2
Product Type
A~Z
S: Split Type Air Conditioner
3
Cooling/Heating/Inverter
A~Z
C: Cooling only
H: Heat pump
X: C/O + E/Heater
Z: H/P + E/Heater
4, 5
Capacity
0~9
Cooling/Heating Capacity
Ex. "09" → 9,000 Btu/h
6
Electric Range
1~9
A~Z
1: 115V/60Hz,
2: 220V/60Hz
3: 208-230V/60Hz
5: 200-220V/50Hz
6: 220-240V/50Hz
7: 110V, 50/60Hz
8: 380-415V/50Hz
9: 380-415V/60Hz
7
Chassis
A~Z
Name of Chassis of Unit
Ex. LSP → SP Chassis
8
Look
A~Z
Look,
Color (Artcool Model)
9
Function
A~Z
10
Serial No.
1~9
V: AC Inverter C/O
N: AC Inverter H/P
Q: DC Inverter C/O
W: DC Inverter H/P
A: 220V, 50Hz, 3Phase
B: 208~230V, 60Hz, 3Phase
C: 575V, 50Hz, 3Phase
D: 440~460, 60Hz, 3Phase
E: 265V, 60Hz
F: 200V, 50/60Hz
Basic
Basic+4Way
Plasma Filter
Plasma Filter+4 Way
Tele+LCD
Tele+LCD+Nano plasma+4Way
Nano Plasma F+(A/changeove)+A/clean+Low A
Nano Plasma F+(A/changeove)+A/clean+4way+Low A
Tele+LED+4way
Internet
Plasma F+4Way+Oxy generator
Nano Plasma F+(A/changeove)+A/clean
Nano Plasma F+(A/changeove)+A/clean+4way
Nano Plasma F+(A/changeove)+A/clean+PTC
Nano Plasma F+(A/changeove)+Autoclean+4way+PTC
Nano Plasma F+(A/changeove)+A/clean+4way+Low A+PTC
Negative ION+A/Clean
(Nano)Plasma+Negative ION+A/Clean
4way+(Nano)Plasma F+Negative ION+Healthy dehumidification+A/Clean
Nano Plasma F+4Way+(A/changeove)+A/clean+Oxy generator
4way+(Nano)Plasma F+Negative ION+Healthy dehumidification+A/Clean+Oxy generator
Dry Contact
Wired Remocon
A
B
C
D
E
F
G
H
I
J
K
L
M
N
P
Q
R
S
T
U
V
W
8
LG Model Development Serial No.
* ARTCOOL COLOR
R
Mirror
W
White
B
Blue
D
Wood
M
Metal
C
Cherry
N
A
S
Q
K
Walnut
Gogh
Sisley
Quran
Mecca
Service Manual 3
Safety Precautions
To prevent injury to the user or other people and property damage, the following instructions must
be followed.
■ Incorrect operation due to ignoring instruction will cause harm or damage. The seriousness is
classified by the following indications.
This symbol indicates the possibility of death or serious injury.
This symbol indicates the possibility of injury or damage to properties only.
■ Meanings of symbols used in this manual are as shown below.
Be sure not to do.
Be sure to follow the instruction.
■ Installation
Always perform grounding.
• Otherwise, it may cause electrical
shock.
Securely attach the electrical
part cover to the indoor unit
and the service panel to the
outdoor unit.
Don’t use a power cord, a plug
or a loose socket which is
damaged.
• Otherwise, it may cause a fire or
electrical shock.
Always install an air leakage
breaker and a dedicated
switching board.
• If the electrical part cover of the
• No installation may cause a fire and
indoor unit and the service panel of
electrical shock.
the outdoor unit are not attached
securely, it could result in a fire or
electric shock due to dust, water, etc.
For installation of the product,
always contact the service center or
a professional installation agency.
• Otherwise, it may cause a fire, electrical shock, explosion or injury.
Do not keep or use flammable
gases or combustibles near
the air conditioner.
• Otherwise, it may cause a fire or the
failure of product.
x
Wa Thinner
4 Room Air Conditioner
Safety Precautions
Ensure that an installation
frame of the outdoor unit is
not damaged due to use for a
long time.
• It may cause injury or an accident.
Do not disassemble or repair
the product randomly.
• It will cause a fire or electrical shock.
Do not install the product at a
place that ther is concern of
falling down.
• Otherwise, it may result in personal
injury.
■ Operation
Use caution when unpacking
and installing.
• Sharp edges may cause injury.
Do not modify or extend the
power cord randomly.
• Otherwise, it may cause a fire or
electrical shock.
Do not share the outlet with
other appliances.
• It will cause an electric shock or a
fire due to heat generation.
Take care so that the power
cord may not be pulled during
operation.
• Otherwise, it may cause a fire or
electrical shock.
Do not use the damaged
power cord.
• Otherwise, it may cause a fire or
electrical shock.
Unplug the unit if strange
sounds, smell, or smoke
comes from it.
• Otherwise, it may cause electrical
shock or a fire.
Service Manual 5
Safety Precautions
Keep the flames away.
• Otherwise, it may cause a fire.
Do not open the suction inlet
of the indoor/outdoor unit during operation.
• Otherwise, it may electrical shock
and failure.
Take the power plug out if necessary, holding the head of the plug
and do not touch it with wet hands.
• Otherwise, it may cause a fire or
electrical shock.
Do not allow water to run into
electrical parts.
• Otherwise, it may cause a fire and
electrical shock.
Never touch the metal parts of
the unit when removing the filter.
• Otherwise, it may cause the failure of • They are sharp and may cause
machine or electrical shock.
injury.
Do not step on the indoor/outdoor unit and do
not put anything on it.
• It may cause an injury through dropping of the unit or
falling down.
When the product is submerged into water,
always contact the service center.
• Otherwise, it may cause a fire or electrical shock.
6 Room Air Conditioner
Do not use the power cord
near the heating tools.
Do not place a heavy object on the power cord.
• Otherwise, it may cause a fire or electrical shock.
Take care so that children may not step on the
outdoor unit.
• Otherwise, children may be seriously injured due to
falling down.
Safety Precautions
■ Installation
Install the drain hose to
ensure that drain can be
securely done.
• Otherwise, it may cause water leakage.
Install the product so that the
noise or hot wind from the
outdoor unit may not cause
any damage to the neighbors.
Always inspect gas leakage
after the installation and repair
of product.
• Otherwise, it may cause dispute with
the neighbors.
• Otherwise, it may cause the failure of
product.
■ Operation
Keep level parallel in installing the product.
• Otherwise, it may cause vibration or water leakage.
Use a soft cloth to clean. Do not use wax, thinner, or a strong detergent.
• The appearance of the air conditioner may deteriorate,
change color, or develop surface flaws.
Avoid excessive cooling and perform ventilation sometimes.
• Otherwise, it may do harm to your health.
When gas leaks, open the window for ventilation before operating the unit.
• Otherwise, it may cause explosion, and a fire.
x
Wa Thinner
Service Manual 7
Dimensions
Dimensions
Symbols used in this Manual
This symbol alerts you to the risk of electric shock.
This symbol alerts you to hazards that may cause harm to the
air conditioner.
NOTICE
This symbol indicates special notes.
Indoor Unit
Hanger Hole
W
D
H
Fix Hole
Pipe Hole
Model
INDOOR UNIT
Dimension
W
mm
570
H
mm
568
D
mm
137
8 Room Air Conditioner
Dimensions
Outdoor Unit
L2
D
L1
W
H
L3
L5
Gas side
(3-way valve)
L4
Liquid side
(2-way valve)
DIM
MODEL
unit
7K Models
W
mm
575
H
mm
525
D
mm
260
L1
mm
301
L2
mm
73
L3
mm
392
L4
mm
35
L5
mm
100
Service Manual 9
Dimensions
L2
D
L1
W
H
L3
L5
Gas side
(3-way valve)
L4
Liquid side
(2-way valve)
DIM
MODEL
unit
9K, 12K Models
W
mm
770
H
mm
540
D
mm
245
L1
mm
285
L2
mm
64
L3
mm
518
L4
mm
10
L5
mm
100
10 Room Air Conditioner
Product Specifications
Product Specifications
Table-1
Model Name
AS-H076PB/D/M/WL1 AS-H096PB/D/M/W/L1
Item
Unit
AS-H126PA/B/D/M/S/WL1
AS-H126PA/B/D/M/S/WG1
7500
9200
12000
7700
9400
12200
l/h
1
1.2
1.5
Ø, V, Hz
1Ø, 220-240V, 50Hz
1Ø, 220-240V, 50Hz
1Ø, 220-240V, 50Hz
5.5
7
8.3
20
26
34
37
37
44
48
46
46
685
840
1099
705
860
1200
3
3.8
4.9
3.1
3.85
5.3
10.95
10.95
10.92
3.2
3.2
2.98
24
24
24
18
25.5
25.5
570 x 568 x 137
570 x 568 x 137
570 x 568 x 137
575 x 525 x 260
770 x 540 x 245
770 x 540 x 245
8.5
8.5
8.5
23
31
35
750(R410A)
870(R410A)
880(R410A)
O
O
O
L.C.D Wireless
L.C.D Wireless
L.C.D Wireless
1/4 (6.35)
1/4 (6.35)
1/4 (6.35)
3/8 (9.52)
3/8 (9.52)
1/2 (12.7)
Sleeping Operation
O
O
O
Drain Hose
O
O
O
3*1.0mm2 + 2*0.75mm2
3*1.0mm2 + 2*0.75mm2
3*1.0mm2 + 2*0.75mm2
3*1.0mm2
3*1.0mm2
3*1.0mm2
Cooling Capacity
Btu/h
Heating Capacity
Moisture Removal
Power Source
Indoor
Air Circulation
Outdoor
Indoor
Noise Level
Outdoor
Input
m3/min
Cooling
Heating
Running
Cooling
Current
Heating
E.E.R.
Cooling
C.O.P
Heating
dB (A)±3
W
A
Btu/hW
Indoor
Motor Output
Dimensions
(W x H x D)
Outdoor
W
Indoor
Outdoor
mm
Indoor
Net. Weight
Outdoor
Refrigerant
kg
g
Airflow Direction Control (Up & Down)
Remocon Type
Liquid
Service Valve
Gas
Connecting Cable(p*mm2)
Power Cord(p*mm2)
inch(mm)
Service Manual 11
Product Specifications
Table-2
Model Name
LS-H076PB/D/M/WL1
Item
Unit
LS-H096PA/B/D/M/S/WL1
LS-H126PA/B/D/M/S/WL1
LSNH096P*L1
7000
9000
11000
7300
9300
12500
l/h
1
1.2
1.4
Ø, V, Hz
1Ø, 220-240V, 50Hz
1Ø, 220-240V, 50Hz
1Ø, 220-240V, 50Hz
5.5
7
8.7
20
26
26
37
35
42
48
46
46
700
940
1250
628
910
1220
3
4.1
5.8
2.9
4
5.5
10
9.57
8.80
3.4
3
3
24
24
24
18
25.5
25.5
570 x 568 x 137
570 x 568 x 137
570 x 568 x 137
575 x 525 x 260
770 x 540 x 245
770 x 540 x 245
9
8.5
8.5
23
31
33
690(R-22)
950(R-22)
800(R-22)
O
O
O
L.C.D Wireless
L.C.D Wireless
L.C.D Wireless
1/4 (6.35)
1/4 (6.35)
1/4 (6.35)
3/8 (9.52)
3/8 (9.52)
1/2 (12.7)
Sleeping Operation
O
O
O
Drain Hose
O
O
O
3*1.0mm2 + 2*0.75mm2
3*1.0mm2 + 2*0.75mm2
3*1.0mm2 + 2*0.75mm2
3*1.0mm2
3*1.0mm2
3*1.0mm2
Cooling Capacity
Btu/h
Heating Capacity
Moisture Removal
Power Source
Indoor
Air Circulation
Outdoor
Indoor
Noise Level
Outdoor
Input
m3/min
Cooling
Heating
Running
Cooling
Current
Heating
E.E.R.
Cooling
C.O.P
Heating
dB (A)±3
W
A
Btu/hW
Indoor
Motor Output
Dimensions
(W x H x D)
Outdoor
W
Indoor
Outdoor
mm
Indoor
Net. Weight
Outdoor
Refrigerant
kg
g
Airflow Direction Control (Up & Down)
Remocon Type
Liquid
Service Valve
Gas
Connecting Cable(p*mm2)
Power Cord(p*mm2)
12 Room Air Conditioner
inch(mm)
Product Specifications
Table-3
Model Name
Item
LS-C096PB/D/ML1
11000
9000
12000
-
-
12000
l/h
1.4
1.2
1.5
Ø, V, Hz
1Ø, 220-240V, 50Hz
1Ø, 220-240V, 50Hz
1Ø, 115V, 60Hz
8.7
7
9
26
26
27
40
38
44
46
46
46
1250
900
1150
-
-
1170
5.8
4
10.1
-
-
10.2
8.8
10
10.4
-
-
3.0
24
7.8
24
25.5
18
27
570 x 568 x 137
570 x 568 x 137
570 x 568 x 137
770 x 540 x 245
564 x 252 x 265
770 x 540 x 245
8.5
8.5
9
33
23
32
980(R-22)
710(R-22)
810
O
O
O
L.C.D Wireless
L.C.D Wireless
L.C.D Wireless
1/4 (6.35)
1/4 (6.35)
1/4(6.35)
1/2 (12.7)
3/8(9.52)
1/2(12.7)
O
O
O
Unit
Cooling Capacity
Btu/h
Heating Capacity
Moisture Removal
Power Source
Indoor
Air Circulation
Outdoor
Outdoor
Input
m3/min
Indoor
Noise Level
Cooling
Heating
Running
Cooling
Current
Heating
E.E.R.
Cooling
C.O.P
Heating
dB (A)±3
W
A
Btu/hW
Indoor
Motor Output
Dimensions
(W x H x D)
Outdoor
W
Indoor
Outdoor
mm
Indoor
Net. Weight
Outdoor
Refrigerant
kg
g
Airflow Direction Control (Up & Down)
Remocon Type
Liquid
Service Valve
Gas
inch(mm)
Sleeping Operation
O
Drain Hose
Connecting Cable(p*mm2)
Power Cord(p*mm2)
LS-H121PDL2
LS-C126PB/D/M/W/K/Q1
O
O
3*1.0mm + 2*0.75mm
3*1.0mm
3*1.0mm2
3*1.0mm2
2
LS-H121PDL3
2
2
3*1.0mm +12*0.75 mm2
2
3*1.0mm2
Service Manual 13
Installation
Installation
Selection of the Best Location
Indoor unit
• Do not have any heat or steam near the unit.
• Select a place where there are no obstacles in
front of the unit.
• Make sure that condensation drainage can be conveniently routed away.
Do not install near a doorway.
• Ensure that the space around the left and right of
the unit is more than 50cm. The unit should be
installed as high on the wall as possible, allowing a
minimum of 10cm from ceiling.
• Use a stud finder to locate studs to prevent unnecessary damage to the wall.
More than 10cm
More
than 50cm
More than 60cm
More than 10cm
More than 10cm
More
than 60cm
More than 70cm
Piping Length and Elevation
Capacity
(Btu/h)
5k~14k
18k~28k
30k~38k
Standard Max.
Length Elevation
(m)
B (m)
Pipe Size
Max.
Length
A (m)
Additional
Refrigerant
(g/m)
20
GAS
LIQUID
3/8"(Ø9.52)
1/4"(Ø6.35)
4 or 7.5
7
15
1/2"(Ø12.7)
1/4"(Ø6.35)
4 or 7.5
7
15
20
1/2"(Ø12.7)
1/4"(Ø6.35)
4 or 7.5
15
30
20
5/8"(Ø15.88)
1/4"(Ø6.35)
4 or 7.5
15
30
20
5/8"(Ø15.88)
3/8"(Ø9.52)
4 or 7.5
15
30
30
5/8"(Ø15.88)
3/8"(Ø9.52)
7.5
15
30
30
3/4"(Ø19.05)
3/8"(Ø9.52)
7.5
15
30
50
More
than 50cm
A
CAUTION: Install the indoor unit on the wall
where the height from the floor is more than 2
meter.
Outdoor unit
• If an awning is built over the unit to prevent direct
sunlight or rain exposure, make sure that heat
radiation from the condenser is not restricted.
• Ensure that the space around the back and sides
is more than 10cm. The front of the unit should
have more than 70cm of space.
• Do not place animals and plants in the path of the
warm air.
• Take the air conditioner weight into account and
select a place where noise and vibration are minimum.
• Select a place so that the warm air and noise from
the air conditioner do not disturb neighbors.
Indoor unit
Outdoor unit
More than 2m
Indoor unit
A
B
B
Outdoor unit
Outdoor unit
Oil trap
A
Indoor unit
B
If the piping length is more than 5m
CAUTION:
• Capacity is based on standard length and maximum
allowance length is on the basis of reliability.
• Oil trap should be installed every 5~7 meters.
14 Room Air Conditioner
I
Installation
Preparing Work for Installation
Open front panel
1. Push the front panel backward and lift it up to remove the two screws.
2. As soon as you lift the both lower parts of panel front, you can hear the sound from panel front. At this moment
panel front is separated
3. After pulling down this panel a bit, separate connecting wire from the product.
Panel Front
Connector
Remove pipe cover and side cover
1. Remove two screws(for fixing pipe cover)
2. Pull up the side cover of desired connecting direction,
and then side cover is separated.
3. Pick the pipe hole of the side cover.
CAUTION: After removing the pipe
hole, cut the burr for safety.
Pipe hole
Side cover
NOTICE
When making pipe path through rear
wall, you don’t need to pick the pipe hole.
Drain hose junction
1. Remove the rubber stopple in the desired drain direction.
2. Insert drain hose into the handle of drain pan, and
join drain hose and connecting hose according to the
figure by.
Adhesive
Connecting
part
Drain
hose
Only the
desired direction
rubber cap
Service Manual 15
Installation
Fixing the Indoor Unit
1. Attach an Installation guide map on the
desired surface.
INSTALLATION GUIDE MAP
6. Look at suited horizon by horizontal
meter on the horizontal setting line, and
fix lightly the map by adhesive tape.
Horizontality
2. Make a hole with a diameter of 6mm and
depth of 30-35mm by piercing a screw
point.
IN
ST
AII
AT
IO
N
IN
ST
AL
LA
TIO
N
GU
ID
EM
AP
7. Drill the pierted part as a diameter of 50mm
for connecting piping. (In case of piercing
rear surface)
GU
ID
EM
AP
3. Drive the fore plastic anchors into drilled
points.
IN
ST
AL
LA
TIO
N
GU
ID
EM
AP
Plastic anchors
4. Hang the hole of product at the upper
screws, and remove the map. (Falling
attention)
INS
TAL
LAT
ION
GUID
EM
AP
8. First, Drive the two points of the upper
parts by screws. (Leave 10mm for hanging
the product)
mm
10
IN
ST
AL
LA
TIO
N
GU
9. Drive the lower parts after facing the hole
of product with plastic anchors, and fix
completely the upper screws.
Plastic anchors
Hanger hole
(Rear side of
the product)
5. Check the fixed product with light power.
10. In case of nothing wrong, connect the
pipe and the wire. (Refer to installation
manual)
Drill a Hole in the Wall
WALL
Outdoor
16 Room Air Conditioner
(0.2~0.3")
Indoor
5-7mm
• Drill the piping hole with a ø50mm hole core drill.
Drill the piping hole at either the right or the left with
the hole slightly slanted to the outdoor side.
Installation
Flaring Work
Main cause for gas leakage is due to defect in flaring work. Carry out correct flaring work in the following procedure.
Cutting the pipes and the cable.
1. Use the piping kit accessory or the pipes purchased
locally.
Copper
pipe
Slanted Uneven Rough
90°
2. Measure the distance between the indoor and the outdoor unit.
3. Cut the pipes a little longer than measured distance.
4. Cut the cable 1.5m longer than the pipe length.
Removing burrs
Pipe
1. Completely remove all burrs from the cut cross section of
pipe/tube.
Reamer
2. Put the end of the copper tube/pipe in a downward direction as you remove burrs in order to avoid dropping burrs
into the tubing.
Point down
Flare nut
Putting nut on
• Remove flare nuts attached to indoor and outdoor unit,
then put them on pipe/tube having completed burr
removal.
(not possible to put them on after flaring work)
Copper tube
Flaring work
2. Carry out flaring work with the flaring tool.
Outside diameter
mm
inch
Ø6.35
1/4
Ø9.52
3/8
Ø12.7
1/2
Ø15.88
5/8
Ø19.05
3/4
A
mm
0~0.5
0~0.5
0~0.5
0~1.0
1.0~1.3
Bar
Handle
"A"
1. Firmly hold copper pipe in a die in the dimension shown
in the table below.
Bar
Yoke
Cone
Copper pipe
Clamp handle
Red arrow mark
Service Manual 17
Installation
Check
Smooth all round
1. Compare the flared work with the figure by.
Inside is shiny without scratches
2. If a flared section is defective, cut it off and do flaring
work again.
= Improper flaring =
Inclined Surface Cracked Uneven
damaged
thickness
Even length
all round
Connecting the Pipings
Indoor
Preparing the indoor unit's piping and drain hose for installation through the wall.
Route the indoor tubing and the drain hose in the
direction of rear left or right
Drain hose
Tape the tubing, drain hose and the connecting
cable. Be sure that the drain hose is located at the
lowest side of the bundle. Locating at the upper
side can cause drain pan to overflow inside the unit.
Loop
Connecting
cable
Gas side piping
Liquid side piping
Drain hose
NOTICE
If the drain hose is routed inside the room, insulate the hose with an insulation
material* so that dripping from "sweating"(condensation) will not damage furniture
or floors.
*Foamed polyethylene or equivalent is recommended.
18 Room Air Conditioner
Installation
Connecting the pipings with the indoor unit
and drain hose with drain pipe
1. Align the center of the pipings and sufficiently tighten
the flare nut by hand.
Indoor unit tubing
Flare nut
Pipes
2. Tighten the flare nut with a wrench.
Outside diameter
mm
inch
Ø6.35
1/4
Ø9.52
3/8
Ø12.7
1/2
Ø15.88
5/8
Ø19.05
3/4
Torque
kg.m
1.8
4.2
5.5
6.6
6.6
Open-end wrench (fixed)
Flare nut
Connection pipe
Wrench
Indoor unit tubing
3. When extending the drain hose at the indoor unit,
install the drain pipe.
Drain hose
Indoor unit drain hose
Adhesive
Wrap the insulation material around the
connecting portion.
Vinyl tape (narrow)
Plastic bands Insulation material
1. Overlap the connection pipe insulation material and
the indoor unit pipe insulation material. Bind them
together with vinyl tape so that there may be no gap.
2. Wrap the area which accommodates the rear piping
housing section with vinyl tape.
Indoor
unit pipe
Connection
pipe
Vinyl tape
Wrap with vinyl tape
(wide)
Connecting cable
Pipe
3. Bundle the piping and drain hose together by wrapping them with vinyl tape over the range within which
they fit into the rear piping housing section.
Vinyl tape(narrow)
Wrap with vinyl tape
Pipe
Vinyl tape(wide)
Drain hose
Service Manual 19
Installation
Outdoor
Align the center of the pipings and sufficiently tighten
the flare nut by hand.
Finally, tighten the flare nut with torque wrench until the
wrench clicks.
• When tightening the flare nut with torque wrench,
ensure the direction for tightening follows the arrow on
the wrench.
Outside diameter
mm
inch
Ø6.35
1/4
Ø9.52
3/8
Ø12.7
1/2
Ø15.88
5/8
Ø19.05
3/4
20 Room Air Conditioner
Torque
kg.m
1.8
4.2
5.5
6.6
6.6
Outdoor unit
Gas side piping
(Bigger diameter)
Liquid side
piping
(Smaller
diameter)
Torque wrench
Installation
Connecting the Cables to the Indoor Unit.
• Connect the cables to the indoor unit by connecting the wires to the terminals on the control board
dividually according to the outdoor unit connection. (Ensure that the color of the wires of the outdoor unit and the
terminal No. are the same as those of the indoor unit.)
• Before connecting the cables to the terminal block, remove the cables in the holder of the control cover and
do it.
CAUTION:
• The above circuit diagram is subject to change without notice.
• The earth wire should be longer than the common wires.
• When installing, refer to the circuit diagram behind the panel front of the indoor unit.
• Connect the wires firmly so that they may not be pulled out easily.
• Connect the wires according to color codes, referring to the wiring diagram.
CAUTION: If a power plug is not
used, provide a circuit breaker
between power source and the unit
as shown by.
Main power source
Air
Conditioner
Circuit Breaker
Use a circuit breake
or time delay fuse.
CAUTION: The power cord connected to the "A" unit should be selected according to
the following specifications(Type "B" approved by HAR or SAA).
(mm2)
Grade
NORMAL CROSS
5k~9k
-SECTIONAL AREA
0.75
Unit(A)
Indoor
12k
14k~18k 24k~28k 30k, 32k 36k, 38k
1.0
1.5
Indoor
Indoor
2.5
2.5
5.5
Indoor Outdoor Outdoor
Cable Type(B) H05VV-F H05VV-F H05VV-F H05VV-F H05RN-F H05RN-F
The power connecting cable connecting the indoor and outdoor unit should be selected
according to the following specifications (Type "B" approved by HAR or SAA).
(mm2)
NORMAL
CROSS
-SECTIONAL
AREA
Grade
NORMAL
CROSS-SECTIONAL
AREA 0.75mm2
(mm2)
5k~12K
14k~18k
24k~28k
1.0
1.5
2.5
Grade
NORMAL CROSS
30k, 32k 36k, 38k
-SECTIONAL AREA
0.75
0.75
H07RN-F
H07RN-F
Cable Type(B) H07RN-F H07RN-F
Cable Type(B) H07RN-F
Service Manual 21
Installation
Connecting the Cables to the Outdoor Unit
1. Remove the control cover from the unit by loosening the screw.
Connect the wires to the terminals on the control
board individually.
Outdoor Unit
Terminal block
2. Secure the cable onto the control board with the
cord clamp.
3. Refix the control cover to the original position
with the screw.
Over 5mm
Connecting cable
Connecting cable
4. Use a recognized circuit breaker "A"
between the power source and the unit.
A disconnecting device to adequately disconnect
all supply lines must be fitted.
Circuit
Breaker
(A)
Cover control
Grade
5K~14K
18K
15
20
24k~28K 30k,32K 36k,38k
30
30
40
CAUTION: After the confirmation of the above conditions, prepare the wiring as
follows:
1) Never fail to have an individual power circuit specifically for the air conditioner. As for the method of wiring,
be guided by the circuit diagram posted on the inside of control cover.
2) The screw which fasten the wiring in the casing of electrical fittings are liable to come loose from vibrations
to which the unit is subjected during the course of transportation. Check them and make sure that they are
all tightly fastened. (If they are loose, it could cause burn-out of the wires.)
3) Specification of power source.
4) Confirm that electrical capacity is sufficient.
5) See to that the starting voltage is maintained at more than 90 percent of the rated voltage marked on the
name plate.
6) Confirm that the cable thickness is as specified in the power source specification.
(Particularly note the relation between cable length and thickness. (Refer to page 21)
7) Always install an earth leakage circuit breaker in a wet or moist area.
8) The following would be caused by voltage drop.
• Vibration of a magnetic switch, which will damage the contact point, fuse breaking, disturbance of the normal function of the overload.
9) The means for disconnection from a power supply shall be incorporated in the fixed wiring and have an air
gap contact separation of at least 3mm in each active(phase) conductors.
22 Room Air Conditioner
Installation
Checking the Drainage
Forming the Piping
1. Checking the drainage.
• Pour a glass of water on the evaporator.
• Ensure the water flows through the drain hose of
the indoor unit without any leakage and goes out
the drain exit.
1. Form the piping by wrapping the connecting
portion of the indoor unit with insulation material and secure it with two kinds of vinyl tapes.
• If you want to connect an additional drain hose,
the end of the drain outlet should be routed above
the ground. Secure the drain hose appropriately.
2. In cases whe