LG L1006R, LWHD1006RY6, L1006RY6, LWHD1006R, HBLG1003R Service Manual

LG

Room

Air Conditioner

SERVICE MANUAL

LG

CAUTION

• BEFORE SERVICING THE UNIT, READ THE SAFETY
PRECAUTIONS IN THIS MANUAL.

• ONLY FOR AUTHORIZED SERVICE PERSONNEL.

MODEL: HBLG8003R,LB8000ER,LW8000ER,HBLG1003R,LWHD1006R,L1006R

LWHD1006RY6,L1006RY6

2 Room Air Conditioner

Air Conditioner Service Manual

TABLE OF CONTENTS

Safety Precautions..........................................................................................................................................3

Dimensions .....................................................................................................................................................5

Outside Dimensions...................................................................................................................................5

Product Specifications ..................................................................................................................................6

Installation .......................................................................................................................................................7

Select the Best Location ............................................................................................................................7

Installation Check.......................................................................................................................................7

How to Secure the Drain Pipe....................................................................................................................7

How to Install..............................................................................................................................................8

Operation ......................................................................................................................................................12

Function of Controls .................................................................................................................................12

Disassembly ..................................................................................................................................................14

Mechanical Parts......................................................................................................................................14

Air handling

Parts.....................................................................................................................................15

Elect

rical Parts .........................................................................................................................................16

Ref

rigerating Cycle...................................................................................................................................18

S

chematic Diagram.......................................................................................................................................21

Wi

ring Diagram.........................................................................................................................................21

Electronic Control D

evice.........................................................................................................................22

Components Location ..............................................................................................................................23

Trou

bleshooting Guide.................................................................................................................................24

Pipeing System ................................................................................................................

........................24

Trou

bleshooting Guide .............................................................................................................................25

Exploded Vi

ew ..............................................................................................................................................37

Replacement

Parts List ................................................................................................................................38

Electrical Parts Troubleshooting Guide......................................................................................................27

Electrical Parts ........................................................................................................................................31

Safety Precautions

Safety
Precautions

To prevent injury and property damage, follow these instructions.
Incorrect operation due to ignoring instructions might cause harm or damage, the seriousness of which is
indicated by the following symbols.

Precautions

WARNING
CAUTION

This symbol shows the possibility of death or serious injury.

This symbol indicates the possibility of injury or damage to property.

Never Do This

Always Do This

■ The following items are classified by these symbols.

WARNING

WARNING

Plug in the power plug
properly.

• Doing so may cause electric
shock or fire due to heat
generation.

Do not modify power cord
length or share the outlet
with other appliances.

• Doing so may cause electric shock or
fire due to heat generation.

Do not allow water to run
into electric parts.

• Doing so may cause failure of
machine or electric shock.

Do not use the socket if it is
loose or damaged.

Do not operate or stop the
unit by inserting or pulling
out the power plug.

• Doing so may cause electric
shock or fire due to heat
generation.

Do not operate with wet
hands or in damp
environment.

• Doing so may cause electric
shock.

Always install air leakage
breaker and a dedicated
switching board.

• Failure to install these may cause
fire or electric shock accident.

Do not open the entrance
during operation.

Do not damage or use an
unspecified power cord.

• Doing so may cause electric shock or fire.

•

If the supply cord is damaged, it must be replaced
by the manufacturer, the manufacturer's service
agent, or a similarly qualified person in order to
avoid a hazard. (Y attachment)

Always plug into a
grounded outlet.

• No grounding may cause electric
shock (See Installation Manual).

Unplug the unit if strange
sounds, odors, or smoke
comes from it.

• Such a unit may pose a risk of

fire or electric shock accident.

Keep firearms away.

• Doing so may cause fire or
electric shock.

Do not use the power cord close to heating
tools.

• Doing so may cause fire or electric shock. • Doing so may lead to an explosion or fire.

• It may cause electric shock.

Do not use the power cord near flammable gas
or combustibles such as gasoline, benzene,
thinner, etc.

Service Manual 3

Safety Precautions

WARNING

WARNING

Ventilate before operating air conditioner
when gas goes out.

• Operating the air conditioner in the presence of gas
vapors can lead to explosions and fire.

Never touch the metal parts
of the unit when removing
the filter.

• They are sharp and may cause
injury.

When cleaning the unit, first
make sure the
cord is unplugged.

•

Since the fan rotates at high speed
during operation, it may cause
injury if activated while cleaning.

is off and the

Do not clean the air
conditioner with water.

• Water may enter the unit and
degrade the insulation. It also
may cause an electric shock.

Do not put a pet or house
plant where it will be
exposed to direct air flow.

• This could injure the pet or plant. • It may cause damage of animals

• Doing so may cause failure or electric shock.

CAUTION

CAUTION

Do not disassemble or modify products
randomly.

Operate only in a well
ventilated area when using in
the presence of a stove, etc.

• An oxygen shortage may
otherwise occur.

Do not use appliance for special
purpose such as climate control for
animals or vegetables, precision
machine, or conservation of art

or vegetables or loss of property.

articles.

Stop operation in storm or
hurricanes.

• Operation with windows opened
may cause wetting of indoor and
soaking of household furniture.

Do not place obstacles
around the absorption inlet
or output.

• Doing so may cause failure of
appliance or accident.

Do not use abrasives or strong
detergent such as wax or
thinner. Always use a soft cloth.

• Otherwise, the products appearance may

be damaged due to change of product
color or scratching of its surface.

If water enters the product, turn off the the
power switch of the main body of appliance.
Contact service center after taking the power­plug out from the socket.

Hold the plug by the head
when taking it out.

• Improper handling may cause
electric shock or damage.

Ensure that an installation console of
the outdoor appliance is not damaged
due to extened use.

• If the previous air conditioner
damaged the console, there is a
risk of the new unit falling.

Do not place heavy object on the
power cord and take care so that
the cord is not pinched.

• Treating the power cord
carelessly poses a danger of fire
or electric shock.

Turn off the main power
switch when not using it for
a long time.

• Doing so can prolong the life of
the product.

Always insert filters
securely. Clean them every
two weeks.

• Operation without filters will
cause failure.

Do not drink water drained
from air conditioner.

• It contains contaminants that
would make you sick.

Do not direct airflow at room occupants only.

4 Room Air Conditioner

• This could damage your health.

Dimensions

Dimensions

Outside Dimensions

This symbol alerts you to the risk of electric shock.

This symbol alerts you to hazards that could cause harm to the
air conditioner.

This symbol indicates special notes.

NOTICE

Symbols Used in this Manual

490(19 / )

3

8"

29(1 / )

18( / )

unit: mm(inch)

31

126.5(4 / )

5

32"

23

32"

32"

510

20

3

32

DEFROST

HEAT

COOL

FAN

DRY

FAN

ENERGY
SAVER

AIR

INDOOR DESIRED

PURYFIER

AUTO

RESTART

354(13 / ")

29

32

Service Manual 5

6 Room Air Conditioner

Specfications

Product SpecificationsPrProduct Specificationsoduct SpecificationsProduct Specifications

MODELS

ITEMS

POWER SUPPLY

COOLING CAPACITY (Btu/h)

INPUT (W)

RUNNING CURRENT (A)

E.E.R (BTU/W.h)

OPERATING

CONDITION

REFRIGERANT (R-22) CHARGE

EVAPORATOR

CONDENSER

FAN, INDOOR

FAN, OUTDOOR

FAN SPEEDS, FAN/COOLING

FAN MOTOR

OPERATION CONTROL

INDOOR (°C)

OUTDOOR (°C)

HBLG8003R

8,000

820

7.4

9.8

300g(10.6oz)

2 ROW 11STACKS

LB8000ER

26.7(DB)* 19.4(WB)**

35(DB)* 23.9(WB)**

2 ROW 16STACKS

PROPELLER TYPE FAN WITH SLINGER RING

REMOTE CONTROLLER

LW8000ER

1ø, 115, 60Hz

8,200 10, 000

750 1 ,020

7.0 9.2

10 . .8

9

400g(14.1oz) 420

3 ROW 11STACKS

TURBO FAN

3/3

6 POLES

HBLG1003R
LWHD1006R(Y6)
L1006R(Y6)

9

g(14.6oz)

ROOM TEMP. CONTROL

AIR DIRECTION CONTROL

CONSTRUCTION

PROTECTOR

POWER CORD

DRAIN SYSTEM

NET WEIGHT (lbs/kg)

OUTSIDE DIMENSION (inch)

(W x H x D) (mm)

* DB:Dry Bulb
**

WB:Wet Bulb

COMPRESSOR

FAN MOTOR

THERMISTOR

VERTICAL LOUVER (RIGHT & LEFT)

HORIZONTAL LOUVER (UP & DOWN)

SLIDE IN-OUT CHASSIS

OVERLOAD PROTECTOR

INTERNAL THERMAL PROTECTOR

(3 WIRE WITH GROUDING)

ATTACHMENT PLUG (CORD-CONNECTED TYPE)

DRAIN PIPE OR SPLASHED BY FAN SLINGER

62/28

203/32x 137/8x 193/

510 x 35 3 x 490

8

71 /32

Figure 2

Figure 3

Figure 1

Installation

Installation

Select the Best Location

1.To prevent vibration and noise, make sure the unit
is installed securely and firmly.

2.Install the unit where the sunlight does not shine
directly on the unit.

3.The outside of the cabinet must extend outward for
at least 12" and there should be no obstacles, such
as a fence or wall, within 20" from the back of the
cabinet because it will prevent heat radiation of the
condenser.
Restriction of outside air will greatly reduce the
cooling efficiency of the air conditioner.

4.Install the unit a little slanted so the back is slightly
lower than the front (about1/2"). This will help force
con-densed water to the outside.

5.Install the unit from the bottom about 30"~60"
above the floor level.

The setting conditions must be checked prior to
initial starting.

The undermentioned items are especially important
checking points when the installation is finished.

1. Grounding wire (Green or Green and Yellow) is

provided in the power cord. The green wire must
be grounded.

2. Connect to a single-outlet 15A circuit.

(or 20A circuit for Electric Heater Model)

3. To avoid vibration or noise, make sure the air

conditioner is installed securely.

4 Avoid placing furniture or draperies in front of the

air inlet and outlet.

The air conditioner must be installed horizontally or
tilted slightly to the outside for proper water
drainage.

On exceptionally hot and humid days the air
conditioner may overflow condensed water.

If the air conditioner is used in hot and a high
humidity zone, exchange the HOLE RUBBER
for the DRAIN PIPE.(See figure 2, figure 3.)

Installation CheckInstallation Check

CAUTION: All side louvers of the cabinet must

remain exposed on the outdside of the structure.

COOLED AIR

30"~60"

AWNING

RADIATION

ABOUT 1/2"

FENCE

HEAT

Over 20"

How to Secure the Drain Pipe

BASE PAN

BASE PAN

1

HOLE RUBBER

2

HOLE RUBBER

BOTTOM

BOTTOM

Service ManSerSer ual vice Manvice Man 7ual ual Ser 77vice Manual 7

1. WHEN USING GASKET

2. WHEN USING INSTALLATION KITS

A. WINDOW REQUIREMENTS

This unit is designed for installation in
standard double hung windows with actual opening
widths from 25" to 36".
The top and bottom window sash must open
sufficiently to allow a clear vertical opening of 16"
from the bottom of the upper sash to the window
stool.

DEFROST

HEATCOOL

INDOORDESIRED

ENERGY
SAVER
AIR
PURYFIER
AUTO
RESTART

FAN

FAN

DRY

DEFROST

HEATCOOL

INDOORDESIRED

ENERGY
SAVER
AIR
PURYFIER
AUTO
RESTART

FAN

FAN

DRY

A

B

D

E

F

C

HJ

2

3

4

2

1

G

A

RIGHT SIDE

HORIZONTAL
LINE

B

1. WINDOW (WIDTH-A, HEIGHT-B)

2. GASKET

3. WALL

4. DETAILS 5.1 x 30 ROUND HEAD WOOD
SCREWS

ABCDE F HJK

535mm 366mm 250mm 30mm 0~25mm OVER 420mm 32 5~10mm 0~5mm

(211/2") (147/16") (10") (11/16") (0~1") (OVER 1617/32") (11/4") (3/16"~3/8") (0~3/16")

1

2 3 4

8 9

11

765

10

13

12

NO. NAME OF PARTS Q'TY

1 FRAME CURTAIN 2
2 SILL SUPPORT 2
3 BOLT 2
4 NUT 2
5 SCREW(TYPE A) 16
6 SCREW(TYPE B) 3
7 SCREW(TYPE C) 5
8 FOAM-STRIP 1

9 FOAM-PE 1
10 UPPER GUIDE 1
11 FOAM-PE 1
12 FRAME GUIDE 2
13

WINDOW LOCKING BRACKET

1

B. INSTALLATION KITS CONTENTS

25" to 36"

15" min

Stool

Interior wall

20

3

/32" min

(Without frame curtain)

Offset

1

/2" to 11/4"

Sill

Exterior

Installation

How to Install

8 Room Air Conditioner

BEFORE INSTALLATION

1. Remove the screws which fasten the cabinet at
both sides and at the back.

2. Slide the unit out from the cabinet by gripping the
base pan handle and pulling forward while
bracing the cabinet.

3. Cut the window sash seal to the proper length. Peel
off the backing and attach the Foam-Pe to the
underside of the window sash.

4. Remove the backing from the top upper guide
Foam PE

and attach it to the bottom of the Upper

Guide

.

5. Attach the upper guide onto the top of the cabinet
with 3 type A screws.

6. Insert the Frame Guides into the bottom of the
cabinet.

7. Insert the Frame Curtain into the upper guide
and Frame Guides .

8. Fasten the curtains to the unit with 4 Type A screws
at the both sides.

NOW START INSTALLATION

1. Open the window. Mark a line on center of the
window stool (or desired air conditioner location).
Carefully place the cabinet on the window stool and
align the center mark on the front angle with the
center line marked in the window stool.

2. Pull the bottom window sash down behind the
upper guide until it meets.

Shipping
Screws

C
O
O

L

I
N
D

O
O
R

D

E
S
I
R
E
D

E

N
E
R

G
Y

S
A
V
E

R
A
I
R

P
U

R
Y
F

IE

R

A
U
T

O

R

E
S
T
A

R

T

F
A

N

F
A

N

D

R
Y

H
E

A
T
DEFROST

9

10

13

(Type A)

(Type A)

5

5

11

11

9

5

C
O
O
L

IN
D
OO

R

DESIRED

EN
ERG

Y

SAVER
AIR
PURYFIER
A
UTO
RE
STA

RT

F
A
N

FAN

D
R
Y
H

E
A
T

DEFRO

ST

EPS Material

Upper Guide

Window stool

Front Angle

Window Sash Upper guide

9

Frame Curtain

1

Foam-pe

10

Foam-pe

13

Cabinet

Figure 4

Figure 5

Service Manual 9

Installation

NOTICE

Do not pull the window sash down so tightly

that the movement of Frame Curtain is restricted.

INDOOR OUTDOOR

Sill Support

Nut

Bolt

2

4

3

INDOOR OUTDOOR

12

7

5

Frame Guide

About 1/2"

Screw(Type A)

Cabinet

6

2

About 1/2"

Screw(Type B)5Screw(Type A)

Sill support

Type C

Sash track

Front Angle

Screw(Type B)

6

Sill support

2

3. Loosely assemble the sill support using the parts
in

Figure

6.

4. Select the position that will place the sill
support near the outer most point on sill
(See

Figure

6)

5. Attach the sill support to the cabinet track hole in
relation to the selected position using
2 Type A screws in each support (See

Figure 7).

6. The cabinet should be installed with a very slight

tilt (about

1

/2") downward toward the outside

(See Figure 8).
Adjust the bolt and the nut of Sill Support for
balancing the cabinet.

7. Attach the cabinet to the window stool by
driving the screws (Type B: Length sixteen
millimeters and below.) through the front angle into
window stool (5/8").

8. Pull each Frame Curtain properly to each
window sash track, and repeat step 2.

9. Attach each Frame Curtain to the window sash
by using screws (Type C).
(See Figure 9)

Figure 6

Figure 7

Figure 8

Figure 9

10 Room Air Conditioner

Installation

NOTICE

Be careful when you install the cabinet (frame

guides are broken so easily).

DEFROST

HEATCOOL

INDOOR DESIRED

ENERGY
SAVER
AIR
PURYFIER
AUTO
RESTART

FAN

FAN

DRY

Screw(Type A)

Screw(Type A)

Power cord

13

8

Foam-Strip

10. Slide the unit into the cabinet.(See Fig. 10)

11. Cut the Foam-Strip to the proper length and insert

between the upper and lower window sash.
(See Fig. 11)

12. Attach the window Locking Bracket with a type C

screw. (See Fig. 12)

13. Attach the front grille to the cabinet by inserting the

tabs on the grille into the tabs on the front of the
cabinet. Push the grille in until it snaps into
place.(See Fig. 13)

14. Lift the inlet grille and secure it with a type A screw

through the front grille.(See Fig. 14)

Figure 10

Figure 11

Figure 12

Figure 15

Figure 14

Figure 13

Service Manual 11

Installation

CAUTION: For security purpose, reinstall screws
(Type A) at cabinet's sides.

The controls look like this:

Controls

Remote Control Operations

CAUTION: The Remote Controller will not function properly if strong light strikes

the sensor window of the air conditioner or if there are obstacles between the

Remote Controller and the air conditioner.

12 Room Air Conditioner

Installation

• Designed for COOLING ONLY.

• Powerful and quiet cooling.

• Slide-in and slide-out chassis for the simple
installation and service.

• Low air-intake, top cooled-air discharge.

• Built-in adjustable Thermistor

• Washable one-touch filter

• Compact size

• Reliable and efficient rotary compressor is
equipped.

Powe r

Temp

Fan Speed

Timer Mode

1

2

3

4

5

'

F

TIMER POWERMODE

TEMP

FAN

SPEED

F1 LOW
F2 MED
F3 HIGH

Dry Timer

Fan

Energy

Saver

Cool

1

2

6

3 45

Operation

Service Manual 13

Operation

How to Insert Batteries

1

POWER

Operation starts when this button is pressed and stops when you press the button again.

2

TEMPERATURE CONTROL

The thermostat monitors room temperature to maintain the desired temperature.
The thermostat can be set between 60°F~86°F (16°C~30°C).
The unit takes an average of 30 minutes to adjust the room temperature by 1°F.

3

OPERATION MODE SELECTOR

Select cooling mode to cool the room.
Select energy saver mode for energy saving operation.
Select fan mode for basic ventilating fan operation.
Select dry mode for dry operation.

4

FAN SPEED SELECTOR

For increased power while cooling, select a higher fan speed.
3 steps: High ➔ Low ➔ Med

5

ON/OFF TIMER

The timer can be set to start and stop the unit in hourly increments (up to 12 hours).

6

REMOTE CONTROL SENSOR

1

Push out the cover on the back of the remote control with your thumb

2

Pay attention to polarity and insert two new AAA 1.5V batteries.

3

Reattach the cover.

NOTICE

• In order to prevent discharge, remove the batteries from the remote control if the air

conditioner is not going to be used for an extended period of time
Keep the remote control away from extremely hot or humid places.
To maintain optimal operation of the remote control, the remote sensor should not be
exposed to direct sunlight.

:

Do not use rechargeable batteries. Make sure that both batteries are new.

14 Room Air Conditioner

Disassembly

Disassembly

Mechanical Parts

— Before the following disassembly, POWER SWITCH set to OFF and disconnect the power cord.

1. FRONT GRILLE

1. Open the lnlet grille downward and remove the air
filter.

2. Remove the screw which fastens the front
grille.(See Figure 16)

3. Pull the front grille from the right side.

4. Remove the front grille.(There are 4 hooks.)

5. Re-install the components by referring to the
removal procedure, above.

2. CABINET

1. After disassembling the FRONT GRILLE, remove
the 2 screws which fasten the cabinet at both
sides.

2. Remove the 2 screws which fasten the cabinet at
back.

3. Pull the base pan forward. (See Figure 17)

4. Remove the cabinet.

5. Re-install the components by referring to the
removal procedure, above.

Figure 16

3. CONTROL BOX

1. Remove the front grille.

2. Remove the cabinet.

3. Remove the 2 screws which fasten the power
cord.

4. Disconnect the grounding screw from the
evaporator channel.

5. Remove the 1 screw which fasten the control box
cover.

6. Remove the housing which connects PCB and
motor wire in the control box.

7. Disconnect the housing which connects Plazma
Air Purifier.(Optional)

8. Remove the screw at left cover of filter case and
open the cover to remove inner screw. (Optional)

9. Remove the nut which fastens the terminal cover.

10. Remove the terminal cover.

11. Remove all the leads from the overload protector.

12. Discharge the capacitor by placing a 20,000
ohmresistor across the capacitor terminals.

13. Raise the control box upward completely.
(See Figure 18)

14. Re-install the components by referring to the
removal procedure, above.
(Refer to the circuit diagram found on page 22 in
this manual and on the control box.)

Figure 17

Figure 18

COOL

FAN

DRY

HEAT

FAN

D

IN

E
F

D

R

O

O

O

S

R

T
D
E

S

E

IR

N

E

E

D

R

S

G

A

Y

V
E

R

A
P

IR
U
R

Y

F

IE
A

R

U
R

T
E

O
S

T

A

R
T

Service Manual 15

Disassembly

Air Handling Parts

4. AIR GUIDE AND TURBO FAN

1. Remove the front grille.

2. Remove the cabinet.

3. Remove the control box.

4. Remove the 4 screws which fasten the brace.

5. Remove the brace.

6. Remove the 2 screws which fasten the air guide
upper.

7. Remove the air guide upper.(See figure 19)

8. Remove the 2 screws which fasten the evaporator.

9. Move the evaporator forward and pulling it upward
slightly. (See Figure 20)

10. Pull out the hook of orifice by pushing the tabs

and remove it. (See Figure 21)

11. Remove the clamp with a hand plier which

secures the turbo fan.

12. Remove the turbo fan.

13. Remove the 2 screws which fasten the air guide

from the base pan.

14. Move the air guide backward, and pull out from

the base pan.(Move the air giude lower carefully.)

15. Re-install the components by referring to the

removal procedure, above.

5. FAN

1. Remove the cabinet.

2. Remove the brace.

3. Remove the 5 screws which fasten the condenser.

4. Move the condenser to the left carefully.

5. Remove the clamp which secures the fan.

6. Remove the fan. (See Figure 22)

7. Re-install by referring to the removal procedure.

Figure 19

Figure 20

Figure 21

Figure 22

16 Room Air Conditioner

Disassembly

6. SHROUD

1. Remove the fan.

2. Remove the shroud. (See Figure 23)

3. Re-install the components by referring to the
removal procedure, above.

1. OVERLOAD PROTECTOR

1. Remove the cabinet.

2. Remove the nut which fastens the terminal cover.

3. Remove the terminal cover. (See Figure 24)

4. Remove all the leads from the overload protector.

5. Remove the overload protector.

6. Re-install the components by referring to the
removal procedure, above.

2. COMPRESSOR

1. Remove the cabinet.

2. Discharge the refrigerant system using a Freon

TM

Recovery System.
If there is no valve to attach the recovery system,
install one (such as a WATCO A-1) before venting
the FreonTM. Leave the valve in place after
servicing the system.

3. Remove the overload protector.

4. After purging the unit completely, unbraze the
suction and discharge tubes at the compressor
connections.

5. Remove the 3 nuts and the 3 washers which
fasten the compressor.

6. Remove the compressor. (See Figure 25)

7. Re-install the components by referring to the
removal procedure, above.

Figure 23

Figure 24

Figure 25

Electrical Parts

Service Manual 17

Disassembly

3. CAPACITOR

1. Remove the control box.

2. Open the top cover from the control box.
(See Figure 26)

3. Pull out the capacitor from the control box.

4. Disconnect all the leads of capacitor terminals.

5. Re-install the components by referring to the
removal procedure, above.

4. POWER CORD

1. Remove the control box.

2. Open the top cover from the control box.

3. Disconnect the front panel from the control box.
(See Figure 27)

4. Disconnect two leads from the capacitor and relay.

5. Pull out the power cord.

6. Re-install the component by referring to the above
removal procedure, above.
(Use only one ground-marked hole for ground
connection.)

7. If the supply cord of this appliance is damaged, it
must be replaced by the special cord.
(The special cord means the cord which has the
same specification marked on the supply cord
attached at the unit.)

DEFROST

HEAT

C
O

O
L

IN

D
O

O
R

D
E

S
IR

E
D

E
N

E
R
G

Y

S
A

V
E
R
A
IR

P
U
R

Y
F
IE

R

A

U
T
O

R
E
S

T
A
R

T

F
A

N

FAN

D
R

Y

H
E

A
T

D
E
F

R
O
S

T

Figure 27

Figure 26

Disassembly

5. MOTOR

1. Remove the cabinet.

2. Remove the turbo fan.

3. Remove the fan.

4. Remove the 4 screws which fasten the motor from
the air guide. (See Figure 28)

5. Remove the motor.

6. Re-install the components by referring to the
removal procedure, above.(See Figure 28)

1. CONDENSER

1. Remove the cabinet.

2. Remove the 5 screws which fasten the
brace.

3. Remove the 5 screws which fasten the condenser
and shroud.

4. After discharging the refrigerant completely,
unbraze the interconnecting tube at the condenser
connections.

5. Remove the condenser.

6. Re-install the components by referring to notes.
(See Figure 29)

2. EVAPORATOR

1. Remove the control box.

2. Remove the air guide upper.

3. Remove the 2 screws which fasten the evaporator.

4. Move the evaporator sideways carefully.

5. After discharging the refrigerant completely,
unbraze the interconnecting tube at the evaporator
connections.

6. Remove the evaporator.

7. Re-install the components by referring to notes.
(See Figure 30)

Figure 28

Figure 29

Figure 30

Refrigerating Cycle

CAUTION: Discharge the refrigerant system using a Freon

to attach the recovery system, install one (such as a WATCO A-1) before venting the FreonTM. Leave
the valve in place after servicing the system.

TM

Recovery System. If there is no valve

18 Room Air Conditioner

3. CAPILLARY TUBE

CAUTION: If high vacuum equip­ment is used, just crack valves A

and B for a few minutes, then open
slowly with the two full turns counter­clockwise. This will keep oil from foaming
and being drawn into the vacuum pump.

1. Remove the cabinet.

2. After discharging the refrigerant completely,
unbraze the interconnecting tube at the capillary
tube.(See caution above)

NOTES

— Replacement of the refrigeration cycle.

1. When replacing the refrigeration cycle, be sure to
Discharge the refrigerant system using a Freon
recovery System.
If there is no valve to attach the recovery system,
install one (such as a WATCO A-1) before venting
the FreonTM. Leave the valve in place after
servicing the system.

2. After discharging the unit completely, remove the
desired component, and unbraze the pinch-off
tubes.

3. Solder service valves into the pinch-off tube ports,
leaving the valves open.

4. Solder the pinch-off tubes with Service valves.

5. Evacuate as follows.

1) Connect the vacuum pump, as illustrated figure

31A.

2) Start the vacuum pump, slowly open manifold

valves A and B with two full turns
counterclockwise and leave the valves open.
The vacuum pump is now pulling through valves
A and B up to valve C by means of the manifold

and entire system.

3) Operate the vacuum pump for 20 to 30 minutes,

until 600 microns of vacuum is obtained. Close
valves A and B, and observe vacuum gauge for
a few minutes. A rise in pressure would
indicate a possible leak or moisture remaining in
the system. With valves A and B closed, stop

the vacuum pump.

4) Remove the hose from the vacuum pump and

place it on the charging cylinder. See figure
31B.
Open valve C.
Discharge the line at the manifold connection.

5) The system is now ready for final charging.

TM

Disassembly

3. Remove the capillary tube.

4. Re-install the components by referring to notes.

6. Recharge as follows :

1) Refrigeration cycle systems are charged from
the High-side. If the total charge cannot be put
in the High-side, the balance will be put in the
suction line through the access valve which you
installed as the system was opened.

2) Connect the charging cylinder as shown in figure
31B.
With valve C open, discharge the hose at the
manifold connection.

3) Open valve A and allow the proper charge to
enter the system. Valve B is still closed.

4) If more charge is required, the high-side will not
take it. Close valve A.

5) With the unit running, open valve B and add the
balance of the charge.

a. Do not add the liquid refrigerant to the Low-

side.

b. Watch the Low-side gauge; allow pressure to

rise to 30 lbs.
c. Turn off valve B and allow pressure to drop.
d. Repeat steps b. and c. until the balance of the

charge is in the system.

6) When satisfied the unit is operating correctly,
use the pinch-off tool with the unit still running
and clamp on to the pinch-off tube. Using a tube
cutter, cut the pinch-off tube about 2 inches from
the pinch-off tool. Use sil-fos solder and solder
pinch-off tube closed. Turn off the unit, allow it to
set for a while, and then test the leakage of the
pinch-off connection.

Service Manual 19

Disassembly

Equipment needed: Vacuum pump, Charging cylinder, Manifold gauge, Brazing equipment. Pin-off tool capable

of making a vapor-proof seal, Leak detector, Tubing cutter, Hand Tools to remove components, Service valve.

A

COMPOUND GAUGE

EVAPORATOR
(LOW PRESSURE SIDE)

COMPRESSOR

CAPILLARY TUBE

CONDENSER
(HIGH PRESSURE SIDE)

SEE INSETS

BELOW

MANIFOLD

GAUGE

B

Figure 31A-Pulling Vacuum

Figure 31B-Charging

A

B

EXTERNAL
VACUUM PUMP

A

CHARGING
CYLINDER

LOW

HI

B

C

20 Room Air Conditioner

Service Manual 21

Schematic Diagram

Schematic Diagram

33

22

11

HVB

5V

b

c

R04P

X

O

O

X

5V

R04P

8

EEPROMModel

1

EEPROM

A0

5V

S7136

IC01A

3.6V

2

1

R01A

20K

3

+

10V

1uF

C02A

CAT93C46

Vcc

Auto Restart

Non Auto Restart

20K

R03P

20K

576

R02P

Q03G

1K

R04P

A101S

Q01G

A101S

Q02G

SW03G

D03G

SW06G

D06G

TEMP UP

D02G

D05G

SW02G

MODE

SW05G

TEMP DOWN ON/OFF

D01G

D04G

FAN

SW01G

TIMER

SW04G

A101S

423

A2

GND

A1

10K

R06P

R05P

10K

Rx

SDA

SCL

Digit4 (Scan4)

0.001

C01F

R01F

10K

C02F

0.001

R03F

10K

Digit1 (Scan1)

SEG-c

SEG-a

SEG-b

Digit0 (Scan0)

Digit2 (Scan2)

Digit3 (Scan3)

SCL

SDA

WP

0.01

C01A

50V

1M

R01B

OSC01B

RT8.00MG

1%

12.1K

R02H

6.2K

1%

R04H

5V

2

1

CN-TH1

SMAW200-02

2

112

5V

12

TEST

14 13

8

9

10

11

1619 18

VSS

VAref

17 15

Osc in

Osc out

/Reset

21 2022

242526

23

5V

4WAY

SYNC

LOW

COMP

Pipe TH

Option1

Option2

Room TH

567

123

4

MICOM

TMP87CH47U

SEG-d

44

SEG-e

SEG-f

4342

VDD

40

SEG-g

3837

KEY0

39

SLIDE SW

41

27282931323330

ION

MED

HI

Receiver

LED out3

Buzzer

363534

LED out0

LED out1

LED out2

KEY1

HVB

R22H

1%

12.1K

R21H

12.1K

1%

OR2H

745

6

987

OR1H

131211

10

5V

1

2

9

8

IC01M

1K

R02E

20

GND

Vout

RECEIVER

Vcc

R01L

5

4

12V

+

5V

10V

220

C02L

ULN2004A

161514

3

6

680pF

C01L

R01P

20K

50V

3

Digit0

510

a

f

a

b

Digit1

a

3

9

b8c

d

f

d

e

d

c

7

e4f1g

e

6

g g

COOL

DEFROST

DRY/HEAT

TIMER

FAN

E/SAVER

R02G

R03G

R04G

R01G

680

680

680

680

R05G

R06G

R07G

12V

680

680

680

IC01G

151413

432

161

121110

765

98

ULN2004A

10K

5V

5V

R12F

R01E

1K

5V

C06D

BZ01E

PKM13EPY

-4002

+

C05D

50V

10V

220

0.01

10

12V

11

12

CN-AC/DC

51581-12(YEONHO)

52044-1245(MOLEX)

C05D

5V

12V

I

C04D

O

7805

IC02D

25V

25V

0.01

0.01

ANGLE

11

12

Rx

Tx

1K

Q03T

C104M

5V

5V

Q02T

A104M

Q01T

C104M

Q04T

A104M

C03T

0.001

R01T

25V

C02T

0.001

D01T

1N4148

C01T

0.1

50V

5V

(RD)

CN-TELE

CN-TH2

SMW200-03

SMW250-02

465

J7

RY-COMP

RY-4WAY

RY-LOW

9

8

CN-TH2

X

O

X

O

J07

O

X

X

O

RY-4WAY

RY-MED

RY-HI

CN-4WAY

7

J5

2

2

PIPE-TH

2

2

1

1

3

3

1

1

2

2

SW2

CN-HVB

SMW200-03(BL)

CN-CONT

SMW200-03(YL)

Model

RY-4WAY

3

3

3

3

1

1

2

2

SW1

33

11

CN-4WAY

YW396-03AV(YL)

SMW200-03(WH)

CN-12V

12V

Cool Only

Heat Pump

1

1

10

S/V-

4WAY

35V2

1

12V

CN-AC/DC

51580-12

52045-1245

+

I

7812

IC01D

C03D

C01D

D04D

+

O

C02D

16V

35V

50V

1000

1000

0.1

4

7

D02D

D03D

2

1

POWER TRANS

1N4004

D02D~D05D

D05D

STRAIGHT

RY-HI

RY-MED

RY-LOW

R01J

C01J

0.1/275V

1

3

1

3

579

579

33

11

CN-PWR

CN-MOTOR

YW396-09AV

YW396-03AV

SVC271D-14A

ZNR01J

SVC271D-14A

RY-COMP

G4A-1A-E-LG

FUSE

250VT3.15A

120 1/2W

CAPACITOR

C

MAIN POWER

MOTOR

FAN

COMP

FAN

HERM

ROOM-TH

88 SEGMENT

Electronic Control Device

22 Room Air Conditioner

Schematic Diagram

Wiring Diagram

MOTOR ASSY

CAPACITOR

COMPRESSOR

OVERLOAD PROTECTOR

DC PCB ASSEMBLY

AC PCB ASSEMBLY

THERMISTOR

PLASMA FILTER ASSY

1

2

3

4

5

6

7

8

1

1

1

1

1

1

1

1

S

S

S

S

S

S

S

S

LOCATION

NO.

DESCRIPTION

REMARKS

Q'TY

PER SET

MOTOR

COMP.

CAPACITOR

DC PCB

ASSEMBLY

THERMISTOR

AIR FILTER
ASSEMBLY

AC PCB

ASSEMBLY

WIRING DIAGRAM

SWITCH

H.V.

ASSEMBLY

BK

CN-MOTOR

CN-PWR

DC12V

ZNR01J

CN-12V

CN-HVB

RY-COMP

3

4

FUSE

250V/T2A

RY-LOW

RY-MED

RY-HI

CN-AC/DC

POWER

TRANS

CN-AC/DC

CN-TH1

BL
RD

RDBK

BL

R

S

C

OLP

YL
OR

YL

F

C

H

WH

(BL)

(

Ribbed

)

BK(BR

)

(

Plain

)

GN/YL

(GN)

GN/YL

(GN)

BK

RD

OR(BR

)

1

5

7

6

8

4

2

3

S: Service Parts
N: Non Service Parts

Service Manual 23

Schematic Diagram

Components Location

1. MAIN P.C.B ASSEMBLY

2. DISPLAY P.C.B. ASSEMBLY

R01T

Q01T

CN-CONCN-12V

CN-AC/DC

J1

J5

D02D

D03D

CN-HVB

HEAT SINK

D04D

C03T

D05D

IC01D

C01D

Q02T

J4

Q03T

C02D

J6

D01T

C02T

QIC02DT

J2

C04D

CN-TELE

Q04T

J3

C05D

J7

RY-HI

RY-MEDRY-LOWRY-4WAY

CN-TH2

CN-PWR

ZNR01J

R01J

PCB:6870A90068D

E03J

E02JJ8E01J

CN-MOTOR

CN-4WAY

C01J

RY-COMP

ASSEMBLY:6871A20417C

POWER

TRANS
FUSE
250V/T3.15A

PCB:6870A90067C
ASSEMBLY:6871A20418A

E04J

E05J

Troubleshooting Guide

Troubleshooting Guide

Piping System

Figure 32 is a brief description of the important components and their function in what is called the refrigeration
system. This will help you to understand the refrigeration cycle and the flow of the refrigerant in the cooling cycle.

MOTOR

COMPRESSOR

OIL

(LIQUID REFRIGERANT)

CAPILLARY TUBE

OUTSIDE COOLING
AIR FOR REFRIGERANT
PASS THROUGH

SUCTION LINE
COOL LOW PRESSURE VAPOR

COOLED
AIR

COMPLETE LIQUID
BOIL OFF POINT

LIQUID
PRESSURE
DROP

ROOM AIR HEAT LOAD

VAPOR INLET

HOT
DISCHARGED
AIR

LIQUID OUTLET

HIGH PRESSURE VAPOR

LIQUID REFRIGERANT

LOW PRESSURE VAPOR

ROOM AIR CONITIONER

EVAPORATOR COILS CONDENSER COILS

CYCLE OF REFRIGERATION

Figure 32

24 Room Air Conditioner

CONDENSER COIL

FAN

CAPILLARY TUBE

MOTOR

COMPRESSOR

TURBO FAN

EVAPORATOR COIL

Troubleshooting Guide

Troubleshooting Guide

In general, possible trouble is classified in two kinds.
The one is called Starting Failure which is caused from an electrical defect, and the other is ineffective Air

Conditioning caused by a defect in the refrigeration circuit and improper application.

Unit runs but poor cooling.

Ineffective Cooling

Check outdoor coil
(heat exchanger) & the fan
operation.

Check gas leakage.

Repair gas leak.

Replacement of unit if the
unit is beyond repair.

Satisfactory operation with
temperature difference of
inlet & outlet air ;

44~50°F(7~10°C)

Check heat load
increase.

Clean condenser.

Not on separate circuit.

Check inside gas
pressure.

Adjusting of refrigerant
charged.

Malfunction of compressor.

Replacement of
compressor.

Check cold air circulation
for smooth flow.

Dirty indoor coil
(Heat exchanger)

Correct above trouble

Check clogging in refrigera­tion circuit.

Repair clogging in refrigera­tion circuit.

Obstruction at air outlet

Clogged of air filter.

Malfunction of fan

Service Manual 25

Troubleshooting Guide

Fails to Start

Check circuit breaker
and fuse.

Gas leakage of feeler bulb
of thermostat

Check of control switch.

Fan only fails to start.

Improper wiring.

Defect of fan motor
capacitor.

Irregular motor resistance
(

).
Irregular motor insulation
(

).

Replacement of fan motor.

Regular but fails to start.

Replacement of compressor
(locking of rotor, metal).

Improper thermostat setting.

Loose terminal connection.

Improper wiring.

Irregular motor resistance ( )

Irregular motor insulation ( )

Replacement of compressor
(Motor damaged)

Drop of power voltage.

Capacitor check.

Replacement

Compressor only fails to
start.

Defect of compressor
capacitor.

Check of power source.

Check of control switch
setting.

26 Room Air Conditioner

Troubleshooting Guide

• Check the Fuse.

• Check the wiring diagram.

Is the

Trans input power AC 115V?

Is the Trans output power

about AC 14V?

Is shorted the Trans. output?

Is output Voltage of IC01D

DC 12V?

Is output Voltage of IC02D

DC 5V?

Is the voltage No.18 of Micom

DC 5V?

Replace AC PCB Ass'y.

Is the

connection between

AC and DC

OK?

Is the reset circuit good?

(The No.14 of

Micom is 5V.)

• Check the Fuse.

• Check the wiring diagram.

• Check the Main
PCB pattern.

• Replace the Trans.

•

Replace

D02D~D05D.

• Replace IC01D.

• Replace IC02D.

•

Replace

IC01A, C02A.

• Connect connector
exactly.

• Check the PCB
pattern.

NO

NO

NO

NO

NO

NO

NO

YES

YES

YES

YES

YES

YES

YES

NO

YES

Possible Trouble 1 The unit does not operate.

Electrical Parts Troubleshooting Guide

Service Manual 27

Troubleshooting Guide

Possible Trouble 2 The compressor does not operate.

Possible Trouble 3 The compressor always operate.

Is setting

Temp. set lower than Room

Temp.-0.5°C?

Is the voltage No.10

of IC01M 0V?

• Replace IC01M.

• Select the setting Temp. to lower Number.

• Wait 3 Minutes.

Does the Unit delay

for 3 minutes?

• Replace MAIN
PCB Ass'y.

Is the voltage N0.9 of

IC01M DC 12V?

• Check the RY-COMP.

• Check the wiring
Diagram.

NO

NO

NO

YES

YES

YES

YES

Is the wire connection of

RY-COMP OK?

• Check the RY-COMP.

• Connect LEAD Wire to
RY-COMP again.

NO

YES

NO

28 Room Air Conditioner

Troubleshooting Guide

Possible Trouble 4 FAN does not operate.

Possible Trouble 5

The function of Energy Saver does not operate.

• Replace IC01M.

• Replace IC01M.

Is the voltage NO.1 or 2 or 4

of IC01M DC 12V?

Is the voltage NO.16 or 15 or 13

of IC01M 0V?

• Check the RY-Hi or
RY-Med or RY-Lo.

•

Check the wiring diagram.

NO

NO

YES

YES

NO

NO

YES

YES

Is the mode

key pushed once more from

cool mode?

Is the voltage No.3 of

CN-AC/DC of AC PCB

Ass'y DC 5V?

• Reference to
OWNER'S MANUAL.

• Set the mode key to
Energy Saver mode.

• Check the Energy
Saver mode key.

• Check the pattern of
AC & DC PCB.

Service Manual 29

30 Room Air Conditioner

Troubleshooting Guide

Possible Trouble 6 Remote controller does not operate.

Possible Trouble 7 It displays abnormally on DC PCB Ass’y.

NO

NO

NO

NO

YES

YES

YES

Is IC01G good?

Is the connection of

CN-AC/DC

OK?

• Replace the DC
PCB Ass'y.

• Replace IC01G.

• Replace IC03G
(Q01G, Q02G, Q03G

for Delux Model).

• Connect connector
to

CN-AC/DC

exactly.

Does the IC03G

(Q01G, Q02G, Q03G for Delux Model)

operate normally on DC

PCB Ass'y?

• Check the PCB pattern.

Is the voltage of Battery

over 2.3V?

• Replace Receiver Ass'y.

Is the connection of

CN-AC/DC

OK?

Is the voltage No.10

of CN-AC/DC on DC PCB

Ass'y DC 5V?

• Replace the battery.

• Check the PCB pattern.

• Connect connector to
CN-AC/DC

exactly.

NO

NO

NO

YES

YES

YES

• Check the Fuse.

• Check the wiring diagram.

Is the

Trans input power AC 115V?

Is the Trans output power

about AC 14V?

Is shorted the Trans. output?

Is output Voltage of IC01D

DC 12V?

Is output Voltage of IC02D

DC 5V?

Is the voltage No.40 of Micom

DC 5V?

Replace AC PCB Ass'y.

Is the

connection between

AC and DC

OK?

Is the reset circuit OK?

(The No.14 of

Micom is 5V.)

• Check the Fuse.

• Check the wiring diagram.

• Check the AC
PCB pattern.

• Replace the Trans.

•

Replace

D02D~D05D.

• Replace IC01D.

• Replace IC02D.

•

Replace

IC01A, C01A.

• Connect connector
exactly.

• Check the PCB
pattern.

NO

NO

NO

NO

NO

NO

NO

YES

YES

YES

YES

YES

YES

YES

NO

YES

Possible Trouble 1 The unit does not operate.

Electrical Parts

Troubleshooting Guide

Service Manual 31

Possible Trouble 2 The compressor does not operate.

Possible Trouble 3 The compressor always operate.

Is desired

Temp. set lower than Room

Temp.-0.5°C?

Is the voltage No.10

of IC01M 0V?

• Replace IC01M.

• Select the desired Temp. to lower Number.

• Wait 3 Minutes.

Is the Unit for 3 minutes

delay?

• Replace AC
PCB Ass'y.

Is the voltage N0.9 of

IC01M DC 12V?

• Check the RY-COMP.

• Check the wiring
Diagram.

NO

NO

NO

YES

YES

YES

YES

Is the wire connection of

RY-COMP OK?

• Check the RY-COMP.

• Connect LEAD Wire to
RY-COMP again.

NO

YES

NO

32 Room Air Conditioner

Troubleshooting Guide

Possible Trouble 4 FAN does not operate.

Possible Trouble 5

Remote controller does not operate.

• Replace IC01M.

• Replace IC01M.

Is the voltage NO.1 or 2 or 4

of IC01M DC 5V?

Is the voltage NO.16 or 15 or 13

of IC01M 0V?

• Check the RY-Hi or
RY-Med or RY-Lo.

•

Check the wiring diagram.

NO

NO

YES

YES

• Check the PCB pattern.

Is the voltage of Battery

over 2.3V?

• Replace Receiver Ass'y.

Is the connection of

CN-AC/DC OK?

Is the voltage No.10

of CN-AC/DC on AC PCB

Ass'y DC 5V?

• Replace the battery.

• Check the PCB pattern.

• Connect connector to
CN-AC/DC exactly.

NO

NO

NO

YES

YES

YES

Service Manual 33

Troubleshooting Guide

Possible Trouble 6 It displays abnormally on DC PCB Ass’y.

NO

NO

NO

NO

YES

YES

YES

Are IC01G and IC02G

OK?

Is the connection of

CN-AC/DC OK?

• Replace the DC
PCB Ass'y.

• Replace IC01G,
IC02G.

• Replace IC03G.

• Connect connector
to CN-AC/DC exactly.

Does the IC03G

operate normally on AC

PCB Ass'y?

34 Room Air Conditioner

Troubleshooting Guide

COMPLAINT CAUSE REMEDY

Check voltage at outlet. Correct if none.

Check voltage to Control Box. If none, check power
supply cord. Replace cord if circuit is open.

Connect wire. Refer to wiring diagram for terminal
identification. Repair or replace loose terminal.

Test capacitor.
Replace if not within ±10% of manufacturer's rating.
Replace if shorted, open, or damaged.

Fan blade hitting shroud or blower wheel hitting
scroll. Realign assembly.

Units using slinger ring for condenser fan must have

1

/4to 5/16inch clearance to the base. If it hits the
base, shim up the bottom of the fan motor with
mounting screw(s).

Check fan motor bearings; if motor shaft will not
rotate, replace the motor.

Check voltage. If not within limits, call an electrician.

Test capacitor.
Check bearings. Does the fan blade rotate freely?
If not, replace fan motor.

Pay attention to any change from high speed to
low speed. If the speed does not change, replace the
motor.

If cracked, out of balance, or partially missing,
replace it.

If cracked, out of balance, or partially missing,
replace it.

Tighten it.

If knocking sounds continue when running or loose,
replace the motor. If the motor hums or noise
appears to be internal while running, replace motor.

Check voltage.
If not within limits, call an electrician.

Check the wire connections, if loose, repair or
replace the terminal. If wires are off, refer to wiring
diagram for identification, and replace. Check wire
locations. If not per wiring diagram, correct.

No power

Power supply cord

Wire disconnected or con­nection loose

Capacitor (Discharge
capacitor before testing.)

Will not rotate

Revolves on overload.

Fan

Turbo

Loose clamper

Worn bearings

Voltage

Wiring

Fan motor will not run.

Fan motor runs
intermittently

Fan motor noise.

Compressor will not run,
but fan motor runs.

Service Manual 35

Troubleshooting Guide

COMPLAINT CAUSE REMEDY

Check the TEMP control. If not at the lowest number,
set TEMP control to this setting and restart the unit.
Check the continuity of the thermistor. Replace the
thermistor if the circuit is open.

Check the capacitor.
Replace if not within ±10% of manufacturers rating.
Replace if shorted, open, or damaged.

Check the compressor for open circuit or ground. If
open or grounded, replace the compressor.

Check the compressor overload, if externally mount­ed. Replace if open. (If the compressor temperature
is high, remove the overload, cool it, and retest.)

Check the voltage.
If not within limits, call an electrician.

Check overload, if externally mounted.
Replace if open. (If the compressor temperature is
high, remove the overload, cool, and retest.)

If not running, determine the cause. Replace if
required.

Remove the cabinet. inspect the interior surface of
the condenser; if restricted, clean carefully with a vac­uum cleaner (do not damage fins) or brush. Clean the
interior base before reassembling.

If condenser fins are closed over a large area on the
coil surface, head pressures will increase, causing
the compressor to overload. Straighten the fins or
replace the coil.

Test capacitor.

Check the terminals. If loose, repair or replace.

Check the system for a restriction.

If restricted, clean of replace.

Close if open.

Determine if the unit is properly sized for the area to
be cooled.

Check the set screw or clamp. If loose or missing,
correct. If the turbo or fan is hitting air guide,
rearrange the air handling parts.

Remove the cabinet carefully and rearrange tubing
not to contact cabinet, compressor, shroud, and barri­er.

Thermistor

Capacitor (Discharge
capacitor before servicing.)

Compressor

Overload

Voltage

Overload

Fan motor

Condenser air flow restric­tion

Condenser fins (damaged)

Capacitor

Wiring

Refrigerating system

Air filter

Exhaust damper door

Unit undersized

Turbo or fan

Copper tubing

Compressor will not run,
but fan motor runs.

Compressor cycles on
overload.

Compressor cycles on
overload.

Compressor cycles on
overload.

Insufficient cooling or heat­ing

Excessive noise

36 Room Air Conditioner

Troubleshooting Guide

130910

149980

346811

359012

W48602

349001

268711-2

W0CZZ

135500

249950

147581

147582-1

559011

349480

552113

352113

263230

268711-1

238310

148000

354210

152302

264110

237200

130410

550140

35211A

554160

567502

135312

135303

352115

Exploded View

Exploded View

Service Manual 37

267110

352390-1

352390-2

55 40 30

731273

552102

147582-2

38 Room Air Conditioner

Replacement Parts List

Replacement Parts List

LOCATION

NO

.

130410
130910

135312
135313
135500
147581

147582
148000
149980
152302
237200
238310
249950
261704
263230
264110
267110
268712
268714
346811
349001
349480
35211A
352113
352115
352390-1
352390-2
354210
359012
550140
554030
554031
554160
559010
567502
W0CZZ
W48602

DESCRIPTION

BASE ASSEMBLY,SINGLE

CABINET ASSEMBLY,SINGLE
GRILLE ASSEMBLY,FRONT(SINGLE)
GRILLE ASSEMBLY,INLET
COVER,CONTROL(INDOOR)
LOUVER,HORIZONTAL
LOUVER,VERTICAL
BRACE
SHROUD
FILTER(MECH),A/C
PANEL,CONTROL
ESCUTCHEON
CONTROL BOX ASSEMBLY,SINGLE
TRANSFORMER,POWER
THERMISTOR ASSEMBLY
POWER CORD ASSEMBLY
REMOTE CONTROLLER
PWB(PCB) ASSEMBLY,DISPLAY
PWB(PCB) ASSEMBLY,MAIN
MOTOR ASSEMBLY,SINGLE
DAMPER,VENTILATION
ORIFICE
TUBE ASSEMBLY,SUCTION SINGLE
TUBE ASSEMBLY,DISCHARGE SINGLE
TUBE ASSEMBLY,EVAPORATOR IN
AIR GUIDE ASSEMBLY
AIR GUIDE ASSEMBLY
EVAPORATOR ASSEMBLY,FIRST
FAN,TURBO
ISOLATOR,COMP
CONDENSER ASSEMBLY,FIRST
CONDENSER ASSEMBLY,BENT
COMPRESSOR
FAN ASSEMBLY,AXIAL
O.L.P
CAPACITOR
CLAMP,SPRING

PART NO.

HBLG8003R

3041A20021V

3091AR2317M
3531A20160A
3530A20075A

4998A10023A

3831A10021E
4995A20278R

6411A20011F

6711A20056S

4681A20069G

5211A20708B
5211A20559K
5211A20228R

5421A10026E

5403A20092B

--­ 5416A90007A

6750A30001N

0CZZA20005B

LB8000ER

3041A20021N

3091AR2317N
3531A20097A
3530A20038A
3550A30114A
4758A20019A
4758A20040A
4800A30002C

4998A10012A

5231A20006A
3720A10111C
3831A10021L
4995A20278U
6170A30003C
6323A20004P

6711A20034G
6871A20418A
6871A20417C
4681A20027X
4900A20003A
4948A10014A
5211A10074D
5211A20470B
5211A20228F
5239A20005B
5239A20012A
5421A10026J
5900A20020A

4830AR4335A
5403A20043L
5403A20043M

5900AR1167B

3H02932B

LW8000ER

HBLG1003R

3091AR2317M
3531A20160A
3530A20075A

3831A10021E
4995A20278S

6411A20011R
6711A20056S

4681A20069H

5211A10074J
5211A20470F
5211A20228S

5421A10026G

2520UCDK004

6750U-L031A
0CZZA20001N

REMARK

R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R

Replacement Parts List

Service Manual 39

Replacement Parts List

LOCATION

NO

.

130410

130910

135312

135313

135500

147581

147582-1

147582-2

148000

159980

152302

237200

249950

268712

238310

268714

263230

264110

346811

349001-1

349001-2

349480

352115

35211A

352113

552111

552102

352390

354212

554030

550140

554160

559010

359012

267110

W48602

W0CZZ

DESCRIPTION

BASE ASSEMBLY,WELD[SINGLE]

CABINET ASSEMBLY,SINGLE

GRILLE ASSEMBLY,FRONT(SINGLE)

GRILLE,INLET

COVER

LOUVER,HORIZONTAL

LOUVER,VERTICAL

LOUVER,VERTICAL

BRACE

SHROUD

FILTER ASSEMBLY,AIR CLEANER

PANEL,CONTROL

CONTROL BOX ASSEMBLY,SINGLE

PWB(PCB) ASSEMBLY,MAIN(AC)

ESCUTCHEON

PWB(PCB) ASSEMBLY,MAIN(DC)

THERMISTOR ASSEMBLY

POWER CORD ASSEMBLY

MOTOR ASSEMBLY,SINGLE

DAMPER,VENTILATION

DAMPER,VENTILATION

ORIFICE

TUBE ASSEMBLY,EVAPORATOR IN

TUBE ASSEMBLY,SUCTION SINGLE

TUBE ASSEMBLY,DISCHARGE SINGLE

TUBE ASSEMBLY,CONDENSER OUT

TUBE ASSEMBLY,CAPILLARY

AIR GUIDE ASSEMBLY

EVAPORATOR ASSEMBLY,FIRST

CONDENSER ASSEMBLY,FIRST

ANTI-VIBRATION BUSH

COMPRESSOR SET

FAN, AXIAL

FAN, TURBO

REMOTE CONTROLLER ASSEMBLY

CLAMP, SPRING

CAPACITOR, DRAWING

PART NO.

LWHD1006R L1006R

3041A20021N

3091AR2317M

3531A20160C

3530A20075B

3550A30226A

4758A20019D

4758A20040A

4758A20040B

4800A30002C

4998A10023C

5231A20006A

3720A10111C

4995A11014A

6871A20417C

3831A10021E

6871A20418A

6323A20004P

6411A20056E

4681A20069H

4900A20003A

4948A10014A

5211A20470L

5211A21786A

5211A10074J

5211A30275M

5239A20012A

5421A10026P

ACG32514901

5040AR4195A

TBZ30826701

5900AR1167B

5900A20020A

6711A20034G

3H02932B

2H01451M

3041A20021V

3091AR2317M

3531A20097A

3530A10238A

3550A30226A

4758A20019A

4758A20040A

4758A20040B

4800A30002C

4998A10012A

5231A20006A

3720A10111C

4995A10113T

6871A20417C

3831A10021L

6871A20418A

6323A20004P

6411A20056F

4681A20069H

4900A20003A

4948A10014A

5211A20470L

5211A21786A

5211A10074J

5211A30275M

5239A20012A

5421A10026P

5403A20043M

5040AR4195A

2520UCDK004

5900AR1167B

5900A20020A

6711A20034G

3H02932B

0CZZA20001N

LWHD1006RY6

3041A20021V

3091AR2317M

3531A20160A

3530A20075A

3550A30226A

4758A20019A

4758A20040A

4758A20040B

4800A30002C

4998A10023C

5231A20006A

3720A10111C

4995A11014A

6871A20417C

3831A10021L

6871A20418A

6323A20004P

6411A20056E

4681A20069H

4900A20003A

4948A10014A

5211A20470L

5211A21786A

5211A10074J

5211A30275M

5239A20012A

5421A10026P

ACG32514902

4830AR4335A

2520UCDK004

5900AR1167B

5900A20020A

6711A20034G

3H02932B

0CZZA20001N

REMARK

R

R

R

R

R

R

R

R

R

R

R

R

R

R

R

R

R

R

R

R

R

R

R

R

R

R

R

R

R

R

R

R

R

R

R

R

R

Replacement Parts List

Service Manual 40

Replacement Parts List

LOCATION

NO

.

130410

130910

135312

135313

135500

147581

147582-1

147582-2

148000

159980

152302

237200

249950

268712

238310

268714

263230

264110

346811

349001-1

349001-2

349480

352115

35211A

352113

552111

552102

352390

354212

554030

550140

554160

559010

359012

267110

W48602

W0CZZ

DESCRIPTION

BASE ASSEMBLY,WELD[SINGLE]

CABINET ASSEMBLY,SINGLE

GRILLE ASSEMBLY,FRONT(SINGLE)

GRILLE,INLET

COVER

LOUVER,HORIZONTAL

LOUVER,VERTICAL

LOUVER,VERTICAL

BRACE

SHROUD

FILTER ASSEMBLY,AIR CLEANER

PANEL,CONTROL

CONTROL BOX ASSEMBLY,SINGLE

PWB(PCB) ASSEMBLY,MAIN(AC)

ESCUTCHEON

PWB(PCB) ASSEMBLY,MAIN(DC)

THERMISTOR ASSEMBLY

POWER CORD ASSEMBLY

MOTOR ASSEMBLY,SINGLE

DAMPER,VENTILATION

DAMPER,VENTILATION

ORIFICE

TUBE ASSEMBLY,EVAPORATOR IN

TUBE ASSEMBLY,SUCTION SINGLE

TUBE ASSEMBLY,DISCHARGE SINGLE

TUBE ASSEMBLY,CONDENSER OUT

TUBE ASSEMBLY,CAPILLARY

AIR GUIDE ASSEMBLY

EVAPORATOR ASSEMBLY,FIRST

CONDENSER ASSEMBLY,FIRST

ANTI-VIBRATION BUSH

COMPRESSOR SET

FAN, AXIAL

FAN, TURBO

REMOTE CONTROLLER ASSEMBLY

CLAMP, SPRING

CAPACITOR, DRAWING

L1006RY6

3041A20021V

3091AR2317M

3531A20097A

3530A20038A

3550A30226A

4758A20019A

4758A20040A

4758A20040B

4800A30002C

4998A10023C

5231A20006A

3720A10111C

4995A11014A

6871A20417C

3831A10021L

6871A20418A

6323A20004P

6411A20056E

4681A20069H

4900A20003A

4948A10014A

5211A20470L

5211A21786A

5211A10074J

5211A30275M

5239A20012A

5421A10026P

ACG32514902

4830AR4335A

2520UCDK004

5900AR1167B

5900A20020A

6711A20034G

3H02932B

0CZZA20001N

PART NO.

REMARK

R

R

R

R

R

R

R

R

R

R

R

R

R

R

R

R

R

R

R

R

R

R

R

R

R

R

R

R

R

R

R

R

R

R

R

R

R

P/NO:3828A29003C

March, 2007

Printed in China